On Maven

Overview

• Maven Getting Started Guide
• Dependency Mechanism
• POM Reference
• Maven Build Lifecycle
• Maven Plugin List
• Standard Directory Layout
• Maven Shared Components
• mvn Command Line Options
• Maven Properties Guide
• Maven Project Properties

• XML Schema and description for Maven POM file(maven-4.0.0.xsd).
• Maven Model 3.0 API
• Maven Core 3.0 API
• MavenProject class API
• The mvn Command
• Version Range Specification
• Maven Assembly Descriptor Reference
• Apache Maven Archiver includes <manifest> element
• Apache Maven Enforcer Rules
  • requireEnvironmentVariable, requireJavaVersion, requireMavenVersion
• Dependencies
• Dependency Mediation and Conflict Resolution
• Transitive Dependencies and Scope
• How to create a jar containing test classes
• OSSRH guides

• Maven for C/C++
  • Maven NAR plugin philosophy
  • Building c/c++ applications with maven(1st July 2012)
• Maven for JavaScript
  • Maven tools for JavaScript developers
• Maven for Python
• Maven for Scala
  • The Maven Cookbook > Scala and Maven

Maven Repositories

• Maven repository list
• codehaus.org Repositories Should Be Removed From Your Nexus Instance (September 27, 2016)

Title	Type	Repository	Remarks
Central Repository		https://repo1.maven.org/maven2/
Java.net	snapshots and releases	https://maven.java.net/content/groups/public/
	releases only	https://maven.java.net/service/local/staging/deploy/maven2/
	snapshots only	https://maven.java.net/content/repositories/snapshots/
Apache Maven Repository	search	https://repository.apache.org/
	public	https://repository.apache.org/content/groups/public
	snapshots	https://repository.apache.org/content/groups/snapshots
JBoss Maven Repository		https://repository.jboss.org/nexus/content/repositories/	JBoss Maven Repository
Spring IO Maven Repositories	lib-milestone	https://repo.spring.io/libs-milestone
	libs-release	http://repo.spring.io/libs-release
	libs-snapshot	http://repo.spring.io/libs-snapshot
	plugins-release	http://repo.spring.io/plugins-release
	plugins-snapshot	http://repo.spring.io/plugins-snapshot
Google		http://google-maven-repository.googlecode.com/svn/repository/
SUN Jars Repository		http://maven.apache.org/guides/mini/guide-coping-with-sun-jars.html
Maven Repository of eclipse.org		http://maven.eclipse.org/nexus/
DocBook Repository		http://docbook.sourceforge.net/maven/repository/	http://wiki.docbook.org/topic/Maven

• Maven 2 repository for java.net projects
• Java.net Maven Repository Usage Guide

Maven Plug-ins

• Maven Plugin List

Category	Plugin	Description	Documentation	Remarks
Utilities	Resource Plugin
	Build Helper Plugin
	Build Number Plugin	Designed to get a unique build number for each time you build your project.
	Versions Plugin	Manages the versions of artifacts in a project's POM.
	Timestamp Plugin	Provides formatted timestamps for maven builds.
	Properties Plugin	Provides goals to read and write properties from and to files.
	Properties Plugin	Provides goals to read and write properties from files.
	Replacer Plugin	Replace tokens within a file with a given value and fully supports regular expressions.
	Expression Plugin	Allow users to resolve expressions interactively.
Source configuration management tools support	SVN Revision Number Plugin	Retrieves the revision number and the status of the Subversion working copy directory and sets project properties that can be used later in the build process.		svnkit-1.7.0-SNAPSHOT
Software platforms support	Android Maven Plugin
Maven support	M2Eclipse	provides tight integration for Apache Maven into the IDE
	Eclipse Plugin
	Tycho	a set of Maven plugins and extensions for building Eclipse plugins and OSGi bundles with Maven.	Tycho Wiki
	P2 Plugin	responsible for the automation of dependency management in the Eclipse RCP environment.
	m2e-android	Maven Eclipse (m2e) plug-in that adds maven support for the Android Developer Tools (ADT) and the Andmore Project.

Code analysis tools support

• FindBugs Plugin
  • http://gleclaire.github.io/findbugs-maven-plugin/
  • Multimodule Configuration
  • Is there an easy way to generate the aggregate report ? : Unfortunately ...

• PMD Plugin
  • http://maven.apache.org/plugins/maven-pmd-plugin/
  • allows you to automatically run the PMD code analysis tool on your project's source code and generate a site report with its results.
  • also supports the separate Copy/Paste Detector tool (or CPD) distributed with PMD.

• Checkstyle Plugin
  • http://maven.apache.org/plugins/maven-checkstyle-plugin/
  • Generates a report regarding the code style used by the developers.

• JavaNCSS Plugin
  • http://mojo.codehaus.org/javancss-maven-plugin/
  • provides the capability to run the JavaNCSS tool on your Maven 2 project sources and produce an html report.

• JDepend Plugin
  • http://mojo.codehaus.org/jdepend-maven-plugin/
  • produces a nicely formatted metrics report based on your project.

• Dependency Graph Plugin
  • http://el4j.sourceforge.net/plugins/maven-depgraph-plugin/
  • Draws a dependency graph of the project the mojo is executed in.

• Sonar Plugin
  • http://mojo.codehaus.org/sonar-maven-plugin/
  • Enables to analyze and report metrics on source code.

• Rat Plugin
  • http://creadur.apache.org/rat/apache-rat-plugin/
  • verifies, whether your source code matches standards like the ASF Source Header and Copyright Notice Policy

• m2e-code-quality
  • http://m2e-code-quality.github.io/m2e-code-quality/
  • Desc. : A collection of Eclipse plugins for M2Eclipse that carry configuration from the Checkstyle, FindBugs and PMD Maven plugins to their corresponding Eclipse plugins.
  • License: Apache-2.0
  • Sources : https://github.com/m2e-code-quality/m2e-code-quality/

Documentation tools support

• Asciidoctor Maven Plugin
  • https://asciidoctor.org/docs/asciidoctor-maven-plugin/
  • the official way to convert your AsciiDoc documentation using Asciidoctor from an Apache Maven build.

Continuous integration tools support

• Jenkins-maven-plugin
  • http://evgeny-goldin.com/wiki/Jenkins-maven-plugin
  • allows to generate Jenkins jobs, one "config.xml" per job, from a simple Maven POM.

Collaboration tools support

• Confluence Plugin
  • http://code.google.com/p/maven-confluence-plugin/
  • Documents a project (using maven site style) and send result to a live confluence site.

• Redmine Plugin
  • http://www.nuiton.org/embedded/jredmine/maven-jredmine-plugin/

Packaging tools support

• IzPack Plugin
  • http://izpack.codehaus.org/izpack-maven-plugin/

• RPM Maven Plugin
  • http://mojo.codehaus.org/rpm-maven-plugin/
  • allows artifacts from one or more projects to be packaged in an RPM for distribution.

Programming languages support

• Maven NAR Plugin
  • http://maven-nar.github.io/
  • Desc. : allows you to compile native code (c++, c and fortran) on a number of different architectures (Linux, Windows, MacOSX, Solaris, ...) and with a number of different compilers/linkers (g++, Microsoft Visual C++, CC, ...).
  • Sources : https://github.com/maven-nar/nar-maven-plugin
  • examples
    • sources : https://github.com/maven-nar/nar-maven-plugin/tree/master/src/it
    • description : http://maven-nar.github.io/examples.html

• Native Maven Plugin
  • http://mojo.codehaus.org/maven-native/native-maven-plugin/index.html
  • Desc. : Use this plugin to compile c and c++ source under Maven 2 with compilers such as gcc, msvc, gcj etc ...

• Scala Maven Plugin
  • http://davidb.github.io/scala-maven-plugin/
  • Desc. : used for compiling/testing/running/documenting scala code in maven
  • Sources : https://github.com/davidB/scala-maven-plugin
  • Readings
    • Scala with Maven

• Maven Scala Plugin
  • http://scala-tools.org/mvnsites/maven-scala-plugin/
  • Desc. : used for compiling/testing/running/documenting scala code in maven.

• mvn-golang
  • https://github.com/raydac/mvn-golang
  • Desc.: A Maven plugin allows to build Go applications with maven
  • Readings
    • Configuration parameters of the mvn-golang-wrapper plugin

• Frontend Maven Plugin
  • https://github.com/eirslett/frontend-maven-plugin
  • Desc. : downloads/installs Node and NPM locally, runs NPM install, Grunt, Gulp and/or Karma.
  • Sources : https://github.com/eirslett/frontend-maven-plugin
  • Readings
    • Setting up Maven to use Grunt/NodeJS (October 7th, 2014)

Application frameworks support

• Spring Boot Maven Plugin
  • https://docs.spring.io/spring-boot/docs/current/maven-plugin/
  • provides Spring Boot support in Maven, allowing you to package executable jar or war archives and run an application “in-place”

• AspectJ Plugin
  • http://www.mojohaus.org/aspectj-maven-plugin/

• Spring BeanDoc Plugin
  • http://mojo.codehaus.org/maven-springbeandoc-plugin/
  • Generates pretty reports for Spring configuration files.

• FreeMarker Pre Processor(FMPP) Plugin
  • http://code.google.com/p/freemarkerpp-maven-plugin/
  • Allows to process FreeMarker templates, inject data into those templates in order to produce code, artifacts, reports or anything desired.

• Bundle Plugin for Maven
  • http://felix.apache.org/site/apache-felix-maven-bundle-plugin-bnd.html

Application servers support

• JBoss Plugin
  • http://mojo.codehaus.org/jboss-maven-plugin/

• Jetty Plugin
  • http://docs.codehaus.org/display/JETTY/Maven+Jetty+Plugin
  • Configuring the Jetty Maven Plugin (for Jetty 9 or higher)

misc

• Swagger-maven-plugin
  • http://kongchen.github.io/swagger-maven-plugin/
  • Desc. : JAX-RS & SpringMVC supported maven build plugin, helps you generate Swagger JSON and API document in build phase.
  • Sources : https://github.com/kongchen/swagger-maven-plugin
  • Readings
    • Generating Swagger spec and enabling swagger-ui for REST based applications (Jun 2, 2016)

• swagger-codegen-maven-plugin
  • https://github.com/swagger-api/swagger-codegen/tree/master/modules/swagger-codegen-maven-plugin
  • Desc. : A Maven plugin to support the swagger code generation project

• Doxia Plugin
  • http://maven.apache.org/doxia/doxia/doxia-maven-plugin/

• Graphviz Plugin
  • http://graphviz-maven-plugin.bryon.us/
  • Desc. : Uses the Graphviz library to render .dot files into images.

• ProGuard Maven Plugin
  • http://wvengen.github.io/proguard-maven-plugin/
  • Desc. : Runs ProGuard as part of your Maven build.
  • Sources : https://github.com/wvengen/proguard-maven-plugin

• duplicate-finder Maven plugin
  • https://github.com/basepom/duplicate-finder-maven-plugin
  • Desc. : Maven plugin to find duplicate classes or resources

Maven Skins

• Fluido skin
  • http://code.google.com/p/fluido-skin/
  • rounded corners and code syntax highlight

Readings

Sonatype books

• Maven: The Complete Reference
• Maven by Example
• Repository Management with Nexus

• Maven Cookbook
• Developing with Eclipse and Maven

Multi module project

• Guide to Working with Multiple Modules
• Multiple Module Projects with Eclipse
• Running Maven Checkstyle plugin safely with multi module project.
  • Using just propertyExpansion much simpler than http://maven.apache.org/plugins/maven-checkstyle-plugin/examples/multi-module-config.html
• Maven Modules + Building a Single Specific Module (Jul 11 '09)
• Maven Tips and Tricks: Advanced Reactor Options (October 6, 2009)

Testing

• surefire:test documentation
  • environmentVariables, forkMode, argLine
• maven-surefire-plugin, DLLs and java.library.path(Mar 4 '13)
  • argLine

Reporting

• Aggregate Reports
• Aggregating Javadocs For Multi-Projects
• Maven FindBugs Plugin/Multimodule Configuration
• add a reportingManagement section
  • reporting plugin and <pluginManagement>
• Linking to javadoc.io using Javadoc -link option(Nov 23 '15)

Maven assemblies

• Guide to creating assemblies
• Maven Assembly Descriptor Reference
• Maven the Complete Reference/Maven Assemblies
• How to deploy Javadoc jar file?
  • Actually, it doesn't use assembly externally.

Maven snapshot repositories

• Repository - SNAPSHOT Handling
• Maven Concepts Repositories
• Guide to deploying 3rd party JARs to remote repository
• Setting Up a Maven Repository

Deployment process and security

• <servers> element in settings.xml
• Password encryption
• Maven Wagon
• Uploading a directory using sftp with Maven

• How to deploy SNAPSHOT with sources and JavaDoc? (Jan 18 '11)
  • using maven-source-plugin:jar-no-fork goal and maven-javadoc-plugin:jar goal is enough and best.
  • No need to use deploy:deploy-file goal nor build-helper:attach-artifact goal.

Site process

• Creating a site
• XML Schema Reference for the site descriptor
• Configuring the site descriptor
• Maven Project Info Reports Plugin
• Customizing Site Appearance
• Doxia Modules Guide
• doxia-module-markdown
• How to use confluence format? (in Maven site generation)
• Building multi-module sites
• How does the Site Plugin use the <url> element in the POM?
  • In a multi module build it is important for the parent and child modules to have different URLs. ...

Release process

• Using the Maven Release plugin: Things to know
• Archiva Release Process (Real-world sample of Maven release plugin)
• Deploying same version overwrites existing release
• Using a Custom Maven Settings File (08 December 2014)

Property and Interpolation

• Maven Properties Guide
• Maven Project Properties
• POM Expression evaluation

• Built-in properties

project.groupId
project.artifactId
project.version
project.name
project.description
project.baseUri
project.build.sourceDirectory     // src/main/java
project.build.scriptSourceDirectory   // src/main/script
project.build.testSourceDirectory     // src/test/java
project.build.outputDirectory         // target/classes
project.build.testOutputDirectory     // target/test-classes
project.build.directory               // target
project.reporting.outputDirectory
project.parent.basedir
currentYear

env.PATH
env.HOME
env.JAVA_HOME

m2e

• How do I get m2eclipse to recognize $M2_OPTS?
• WTP - m2e not deploying transitive dependencies(Feb 6 '13)
  • A bug that is NOT resolved yet.

misc

• Set plugin’s version on the command line in maven 2
• Download library sources and javadocs
  • Guides to download sources and javadocs of artifacts
• Defining custom Maven build command for any project.
  • Specify ${project_loc} at 'Base directory' field and select 'Run' item at 'Display in favorites menu' field in 'Common' tab.
• reportPlugins doesn't inherit more information from pluginManagement.
• Naked Objects' Sister Projects 1.0: Developers Guide
• Maven project versions
• How to deploy SNAPSHOT with sources and JavaDoc?
  • A little bit strange but it really works. But how about the release ?
• ANTLR3 Maven Plugin - Eclipse Setup
• Why must I always “Add Spring project Nature” after Maven “Update Project Configuration” in Eclipse? (Feb 2 '12)
• Including AJDT Projects into Workspace
• Why can't maven find an osgi bundle dependency?(Mar 29 '12)
• How do I update my classpath with an Eclipse User Library via the maven eclipse plugin?
• How to enforces certain Java JDK versions

• Publishing javadoc to github using maven (September 9, 2013)

Examples

• Sonatype OSS Parent POM

Tips and Tricks

Simple POM

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>foo</groupId>
  <artifactId>foo-baz</artifactId>
  <version>0.0.1-SNAPSHOT</version>

  <name>Project Name</name>
  <description>...</description>

  <developers>
    <developer>
      <id>3rdstage</id>
      <name>Sangmoon Oh</name>
      <email>halfface@chollian.net</email>
    </developer>
  </developers>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <!-- control build behavior -->
    <skipTests>false</skipTests>
    <maven.deploy.skip>true</maven.deploy.skip>
    <maven.site.skip>false</maven.site.skip> <!-- consumed by maven-site-plugin -->
    <maven.site.deploy.skip>true</maven.site.deploy.skip> <!-- consumed by maven-site-plugin -->
    <exec.skip>false</exec.skip> <!-- consumed by exec-maven-plugin -->
    <generateProjectInfo>false</generateProjectInfo> <!-- consumed by maven-site-plugin -->
    <generateReports>true</generateReports> <!-- consumed by maven-site-plugin -->
    <maven.javadoc.skip>false</maven.javadoc.skip>
    <maven.javadoc.failOnWarnings>false</maven.javadoc.failOnWarnings>
    <swagger-codegen.skip>true</swagger-codegen.skip>
    <doclint>none</doclint>
    <findbugs.skip>true</findbugs.skip>
    <checkstyle.skip>true</checkstyle.skip>
    <dependencies.release.updatePolicy>never</dependencies.release.updatePolicy> <!-- always | daily | never -->
    <!-- versions for Java SDK and dependencies -->
    <java.version>11</java.version>
    <jsr305.version>3.0.2</jsr305.version> <!-- https://mvnrepository.com/artifact/com.google.code.findbugs/jsr305 -->
    <validation-api.version>2.0.1.Final</validation-api.version> <!-- https://mvnrepository.com/artifact/javax.validation/validation-api -->
    <hibernate-validator.version>6.1.2.Final</hibernate-validator.version> <!-- https://mvnrepository.com/artifact/org.hibernate.validator/hibernate-validator -->
    <slf4j.version>1.7.30</slf4j.version> <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
    <logback.version>1.2.3</logback.version> <!-- https://mvnrepository.com/artifact/ch.qos.logback/logback-classic -->
    <janino.version>3.1.0</janino.version> <!-- https://mvnrepository.com/artifact/org.codehaus.janino/janino -->
    <junit5.version>5.6.1</junit5.version> <!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-engine -->
    <testng.version>6.9.10</testng.version>
    <mockito.version>3.3.3</mockito.version> <!-- https://mvnrepository.com/artifact/org.mockito -->
    <commons-lang3.version>3.9</commons-lang3.version> <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
    <commons-validator.version>1.6</commons-validator.version> <!-- https://mvnrepository.com/artifact/commons-validator/commons-validator -->
    <commons-collections4.version>4.4</commons-collections4.version> <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-collections4 -->
    <typesafe-config.version>1.3.1</typesafe-config.version>
    <swagger.version>2.0.8</swagger.version> <!-- https://mvnrepository.com/artifact/io.swagger.core.v3 -->
    <springfox-swagger2.version>2.9.2</springfox-swagger2.version> <!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger2 -->
    <mybatis.version>3.5.1</mybatis.version> <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
    <jjwt.version>0.10.7</jjwt.version> <!-- https://mvnrepository.com/artifact/io.jsonwebtoken -->
    <web3j.version>4.5.17</web3j.version> <!-- https://mvnrepository.com/artifact/org.web3j -->
    <okhttp.version>4.3.1</okhttp.version>
    <!-- version for Maven plugins -->
    <maven-enforcer-plugin.version>3.0.0-M3</maven-enforcer-plugin.version> <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-enforcer-plugin -->
    <maven-compiler-plugin.version>3.10.1</maven-compiler-plugin.version> <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-compiler-plugin -->
    <maven-surefire-plugin.version>2.22.2</maven-surefire-plugin.version> <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-surefire-plugin -->
    <maven-site-plugin.version>3.9.0</maven-site-plugin.version> <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-site-plugin -->
    <maven-jar-plugin.version>3.2.0</maven-jar-plugin.version> <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-jar-plugin -->
    <maven-javadoc-plugin.version>3.2.0</maven-javadoc-plugin.version> <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-javadoc-plugin -->
    <findbugs-maven-plugin.version>3.0.5</findbugs-maven-plugin.version> <!-- https://mvnrepository.com/artifact/org.codehaus.mojo/findbugs-maven-plugin -->
    <maven-checkstyle-plugin.version>3.1.1</maven-checkstyle-plugin.version> <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-checkstyle-plugin -->
    <duplicate-finder-maven-plugin.version>1.4.0</duplicate-finder-maven-plugin.version> <!-- https://mvnrepository.com/artifact/org.basepom.maven/duplicate-finder-maven-plugin -->
    <maven-eclipse-plugin.version>2.10</maven-eclipse-plugin.version> <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-eclipse-plugin -->
    <web3j-maven-plugin.version>4.5.11</web3j-maven-plugin.version> <!-- https://mvnrepository.com/artifact/org.web3j/web3j-maven-plugin -->
    <exec-maven-plugin.version>3.1.0</exec-maven-plugin.version>
    <swagger-maven-plugin.version>3.1.8</swagger-maven-plugin.version> <!-- https://github.com/kongchen/swagger-maven-plugin -->
    <swagger-codegen-maven-plugin.version>3.0.0-rc1</swagger-codegen-maven-plugin.version> <!-- https://mvnrepository.com/artifact/io.swagger/swagger-codegen-maven-plugin -->
    <swagger-codegen-maven-plugin.v3.version>3.0.10</swagger-codegen-maven-plugin.v3.version> <!-- https://mvnrepository.com/artifact/io.swagger.codegen.v3/swagger-codegen-maven-plugin -->
    <maven.compiler.source>${java.version}</maven.compiler.source>
    <maven.compiler.target>${java.version}</maven.compiler.target>
  </properties>

  <repositories>
    <!-- For more repositories, refer https://mvnrepository.com/repos -->
    <repository>
      <id>central</id>
      <url>https://repo1.maven.org/maven2/</url>
      <releases><updatePolicy>${dependencies.release.updatePolicy}</updatePolicy></releases>
      <snapshots><enabled>false</enabled></snapshots>
    </repository>
    <repository>
      <id>java.net.public</id>
      <url>https://maven.java.net/content/groups/public/</url>
      <releases><updatePolicy>${dependencies.release.updatePolicy}</updatePolicy></releases>
      <snapshots><enabled>true</enabled></snapshots>
    </repository>
  </repositories>

  <pluginRepositories>
    <pluginRepository>
      <id>central</id>
      <url>https://repo1.maven.org/maven2/</url>
      <releases><updatePolicy>${dependencies.release.updatePolicy}</updatePolicy></releases>
      <snapshots><enabled>false</enabled></snapshots>
    </pluginRepository>
  </pluginRepositories>

  <reporting>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-project-info-reports-plugin</artifactId>
        <reportSets>
          <reportSet>
            <reports>
              <report>index</report>
            </reports>
          </reportSet>
        </reportSets>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-jxr-plugin</artifactId>
        <reportSets>
          <reportSet>
            <id>aggregate</id>
            <reports>
              <report>aggregate</report>
              <report>test-aggregate</report>
            </reports>
          </reportSet>
        </reportSets>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-javadoc-plugin</artifactId>
        <reportSets>
          <reportSet>
            <id>aggregate</id>
            <reports>
              <report>aggregate</report>
            </reports>
          </reportSet>
        </reportSets>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-pmd-plugin</artifactId>
        <configuration>
          <!-- For more, refer https://maven.apache.org/plugins/maven-pmd-plugin/pmd-mojo.html -->
          <aggregate>true</aggregate>
          <linkXRef>true</linkXRef>
          <includeXmlInSite>true</includeXmlInSite>
          <skipEmptyReport>true</skipEmptyReport>
          <skipPmdError>true</skipPmdError>
        </configuration>
      </plugin>
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>findbugs-maven-plugin</artifactId>
      </plugin>
    </plugins>
  </reporting>

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-enforcer-plugin</artifactId>
        <version>${maven-enforcer-plugin.version}</version>
        <executions>
          <execution>
            <id>enforce-java</id>
            <goals><goal>enforce</goal></goals>
            <configuration>
              <!-- For more standard rules, refer http://maven.apache.org/enforcer/enforcer-rules/ -->
              <rules>
                <requireJavaVersion><version>${java.version}</version></requireJavaVersion>
                <requireMavenVersion><version>3.0</version></requireMavenVersion>
              </rules>
            </configuration>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <groupId>org.basepom.maven</groupId>
        <artifactId>duplicate-finder-maven-plugin</artifactId>
        <executions>
          <execution>
            <id>find-duplicate-classes</id>
            <phase>prepare-package</phase>
            <goals><goal>check</goal></goals>
          </execution>
        </executions>
        <configuration>
          <!-- For more, refer https://github.com/basepom/duplicate-finder-maven-plugin/wiki -->
          <skip>false</skip>
          <checkCompileClasspath>false</checkCompileClasspath>
          <checkRuntimeClasspath>true</checkRuntimeClasspath>
          <checkTestClasspath>false</checkTestClasspath>
          <ignoredResourcePatterns>
            <ignoredResourcePattern>about.html</ignoredResourcePattern>
          </ignoredResourcePatterns>
          <ignoredDependencies>
            <dependency>
              <groupId>org.slf4j</groupId>
              <artifactId>jcl-over-slf4j</artifactId>
            </dependency>
          </ignoredDependencies>
        </configuration>
      </plugin>
    </plugins>
    <pluginManagement>
      <plugins>
        <!-- core -->
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>${maven-compiler-plugin.version}</version>
          <inherited>true</inherited>
          <configuration>
            <source>${java.version}</source>
            <target>${java.version}</target>
          </configuration>
        </plugin>
        <plugin>
          <!-- For more, refer https://maven.apache.org/surefire/maven-surefire-plugin/ -->
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>${maven-surefire-plugin.version}</version>
        </plugin>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-site-plugin</artifactId>
          <version>${maven-site-plugin.version}</version>
          <dependencies>
            <dependency>
              <groupId>org.apache.maven.wagon</groupId>
              <artifactId>wagon-ssh</artifactId>
              <version>2.12</version>
            </dependency>
          </dependencies>
        </plugin>
        <!-- sources -->
        <plugin>
          <!-- For more, refer https://github.com/kongchen/swagger-maven-plugin -->
          <groupId>com.github.kongchen</groupId>
          <artifactId>swagger-maven-plugin</artifactId>
          <version>${swagger-maven-plugin.version}</version>
          <executions>
            <execution>
              <id>generate-swagger-api</id>
              <phase>process-classes</phase>
              <goals><goal>generate</goal></goals>
            </execution>
          </executions>
        </plugin>
        <plugin>
          <!-- For more, refer followings
            https://github.com/swagger-api/swagger-codegen
            https://github.com/swagger-api/swagger-codegen/tree/master/modules/swagger-codegen-maven-plugin
          -->
          <groupId>io.swagger</groupId>
          <artifactId>swagger-codegen-maven-plugin</artifactId>
          <version>${swagger-codegen-maven-plugin.version}</version>
          <executions>
            <execution>
              <id>generate-rest-api-doc</id>
              <phase>process-classes</phase>
              <goals><goal>generate</goal></goals>
              <configuration>
                <inputSpec>${project.build.directory}/swagger.json</inputSpec>
                <language>html2</language>
                <output>${project.build.directory}/generated-sources/swagger/html2</output>
                <skip>${swagger-codegen.skip}</skip>
              </configuration>
            </execution>
          </executions>
        </plugin>
        <!-- packaging -->
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-jar-plugin</artifactId>
          <version>${maven-jar-plugin.version}</version>
          <configuration>
            <!-- For more on Maven archiver, refer http://maven.apache.org/shared/maven-archiver/index.html -->
            <archive>
              <addMavenDescriptor>false</addMavenDescriptor>
              <forced>true</forced>
              <index>true</index>
              <manifest>
                <addClasspath>false</addClasspath>
                <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
                <addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
                <addExtensions>false</addExtensions>
                <classpathLayoutType>simple</classpathLayoutType>
              </manifest>
              <manifestEntries>
                <Source-Revision>${project.svn.revision}</Source-Revision>
              </manifestEntries>
            </archive>
          </configuration>
        </plugin>
        <!-- reporting -->
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-javadoc-plugin</artifactId>
          <version>${maven-javadoc-plugin.version}</version>
          <configuration>
            <javadocExecutable>${java.home}/bin/javadoc</javadocExecutable>
            <!--  <javadocVersion>${java.version}</javadocVersion> -->
            <source>${java.version}</source>
            <maxmemory>256m</maxmemory>
            <!-- causes error with JDK 8 <additionalJOption>-Xms128m</additionalJOption> -->
            <additionalJOptions>--frames</additionalJOptions>
            <failOnError>false</failOnError>
            <attach>true</attach> <!-- for `javadoc:jar`, refer https://maven.apache.org/plugins/maven-javadoc-plugin/jar-mojo.html#attach -->            
            <docencoding>${project.reporting.outputEncoding}</docencoding>
            <encoding>${project.build.sourceEncoding}</encoding>
            <doctitle>${project.name} ${project.version} API</doctitle>
            <windowtitle>${project.name} ${project.version} API</windowtitle>
            <links>
              <link>https://docs.oracle.com/javase/8/docs/api/</link>
              <link>https://docs.oracle.com/javaee/7/api/</link>
              <link>http://www.javadoc.io/doc/com.google.code.findbugs/jsr305/${jsr305.version}</link>
              <link>http://docs.jboss.org/hibernate/beanvalidation/spec/2.0/api/</link>
              <link>http://docs.jboss.org/hibernate/validator/6.1/api/</link>
              <link>http://www.javadoc.io/doc/org.slf4j/slf4j-api/${slf4j.version}/</link>
              <link>https://junit.org/junit5/docs/${junit5.version}/api/</link>
              <link>http://commons.apache.org/proper/commons-lang/javadocs/api-${commons-lang3.version}/</link>
              <link>http://commons.apache.org/proper/commons-collections/javadocs/api-${commons-collections4.version}/</link>
              <link>http://docs.swagger.io/swagger-core/v1.5.0/apidocs/</link>
              <link>https://javadoc.io/doc/org.web3j/core/${web3j.version}</link>
              <link>https://javadoc.io/doc/org.web3j/abi/${web3j.version}</link>
              <link>https://javadoc.io/doc/org.web3j/crypto/${web3j.version}</link>
              <link>https://javadoc.io/doc/org.web3j/utils/${web3j.version}</link>
            </links>
            <show>protected</show>
            <splitindex>true</splitindex>
            <stylesheet>java</stylesheet> <!-- 'java' (default) or 'maven' -->
          </configuration>
          <executions>
            <execution>
              <id>javadoc-jar</id>
              <phase>prepare-package</phase> <!-- or 'package' -->
              <goals><goal>jar</goal></goals>
            </execution>
          </executions>
        </plugin>
        <plugin>
          <!-- For more, refer http://gleclaire.github.io/findbugs-maven-plugin/ -->
          <groupId>org.codehaus.mojo</groupId>
          <artifactId>findbugs-maven-plugin</artifactId>
          <version>${findbugs-maven-plugin.version}</version>
          <configuration>
            <effort>Max</effort>
            <threshold>Low</threshold>
            <!-- findbugs-maven-plugin doesn't provide aggregate goal or mode -->
            <includeFilterFile>src/config/findbugs/findbugs-exclude.xml</includeFilterFile>
            <plugins>
              <plugin>
                <groupId>com.mebigfatguy.fb-contrib</groupId>
                <artifactId>fb-contrib</artifactId>
                <version>6.8.3</version>
              </plugin>
            </plugins>
          </configuration>
        </plugin>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-checkstyle-plugin</artifactId>
          <version>${maven-checkstyle-plugin.version}</version>
        </plugin>
        <plugin>
          <groupId>org.basepom.maven</groupId>
          <artifactId>duplicate-finder-maven-plugin</artifactId>
          <version>${duplicate-finder-maven-plugin.version}</version>
        </plugin>
        <!-- tools supporting -->
        <plugin>
          <!-- http://maven.apache.org/plugins/maven-eclipse-plugin/eclipse-mojo.html -->
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-eclipse-plugin</artifactId>
          <version>${maven-eclipse-plugin.version}</version>
          <configuration>
            <!-- the next two item doesn't work on m2e. m2e has its own confgiruation in Eclipse preferences -->
            <downloadJavadocs>true</downloadJavadocs>
            <downloadSources>true</downloadSources>
            <forceRecheck>false</forceRecheck>
          </configuration>
        </plugin>
        <plugin>
          <groupId>org.eclipse.m2e</groupId>
          <artifactId>lifecycle-mapping</artifactId>
          <version>1.0.0</version>
          <configuration>
            <lifecycleMappingMetadata>
              <pluginExecutions>
                <pluginExecution>
                  <pluginExecutionFilter>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-dependency-plugin</artifactId>
                    <versionRange>[1.0.0,)</versionRange>
                    <goals><goal>copy-dependencies</goal></goals>
                  </pluginExecutionFilter>
                  <action><ignore/></action>
                </pluginExecution>
                <pluginExecution>
                  <pluginExecutionFilter>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-antrun-plugin</artifactId>
                    <versionRange>[1.0.0,)</versionRange>
                    <goals><goal>run</goal></goals>
                  </pluginExecutionFilter>
                  <action><ignore/></action>
                </pluginExecution>
                <pluginExecution>
                  <pluginExecutionFilter>
                    <groupId>org.codehaus.mojo</groupId>
                    <artifactId>aspectj-maven-plugin</artifactId>
                    <versionRange>[1.0.0,)</versionRange>
                    <goals>
                      <goal>compile</goal>
                      <goal>test-compile</goal>
                    </goals>
                  </pluginExecutionFilter>
                  <action><ignore/></action>
                </pluginExecution>
                <pluginExecution>
                  <pluginExecutionFilter>
                    <groupId>org.codehaus.mojo</groupId>
                    <artifactId>build-helper-maven-plugin</artifactId>
                    <versionRange>[1.0.0,)</versionRange>
                    <goals><goal>parse-version</goal></goals>
                  </pluginExecutionFilter>
                  <action><ignore/></action>
                </pluginExecution>
                <pluginExecution>
                  <pluginExecutionFilter>
                    <groupId>net.alchim31.maven</groupId>
                    <artifactId>scala-maven-plugin</artifactId>
                    <versionRange>[1.0.0,)</versionRange>
                    <goals>
                      <goal>add-source</goal>
                      <goal>compile</goal>
                      <goal>testCompile</goal>
                    </goals>
                  </pluginExecutionFilter>
                  <action><ignore/></action>
                </pluginExecution>
              </pluginExecutions>
            </lifecycleMappingMetadata>
          </configuration>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>

  <dependencies>
    <dependency>
      <!-- JSR 305: Annotations for Software Defect Detection (https://jcp.org/en/jsr/detail?id=305) -->
      <groupId>com.google.code.findbugs</groupId>
      <artifactId>jsr305</artifactId>
      <version>${jsr305.version}</version>
    </dependency>
    <dependency>
      <!-- JSR 330: Dependency Injection for Java -->
      <groupId>javax.inject</groupId>
      <artifactId>javax.inject</artifactId>
      <version>1</version>
    </dependency>
    <dependency>
      <!-- JSR 349: Bean Validation 1.1 (https://jcp.org/en/jsr/detail?id=349) -->
      <groupId>javax.validation</groupId>
      <artifactId>validation-api</artifactId>
      <version>${validation-api.version}</version>
    </dependency>
    <dependency>
      <!-- Hibernate Validator -->
      <groupId>org.hibernate</groupId>
      <artifactId>hibernate-validator</artifactId>
      <version>${hibernate-validator.version}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>jcl-over-slf4j</artifactId>
      <version>${slf4j.version}</version>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>jul-to-slf4j</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
    <dependency>
      <groupId>ch.qos.logback</groupId>
      <artifactId>logback-classic</artifactId>
      <version>${logback.version}</version>
    </dependency>
    <dependency>
      <groupId>org.codehaus.janino</groupId>
      <artifactId>janino</artifactId>
      <version>2.7.8</version>
    </dependency>
    <dependency>
      <!-- https://junit.org/junit5/docs/current/user-guide/#running-tests-build-maven -->
      <!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-engine/5.5.1 -->
      <!-- 'junit-jupiter-engine' depends on 'junit-jupiter-api' -->
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-engine</artifactId>
      <version>${junit5.version}</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.testng</groupId>
      <artifactId>testng</artifactId>
      <version>${testng.version}</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.mockito</groupId>
      <artifactId>mockito-core</artifactId>
      <version>${mockito.version}</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.mockito</groupId>
      <artifactId>mockito-junit-jupiter</artifactId>
      <version>${mockito.version}</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-lang3</artifactId>
      <version>${commons-lang3.version}</version>
    </dependency>
    <!-- For more typesafe config, refer https://github.com/typesafehub/config -->
    <dependency>
      <groupId>com.typesafe</groupId>
      <artifactId>config</artifactId>
      <version>${typesafe-config.version}</version>
    </dependency>
  </dependencies>
</project>

Typical POM for Spring Boot Project

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

  <modelVersion>4.0.0</modelVersion>
  <!-- POM for Spring Boot 2.1 : https://docs.spring.io/spring-boot/docs/2.1.x/reference/htmlsingle/#getting-started-maven-installation -->
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.3.5.RELEASE</version> <!-- last as of 2020/11/03 : v2.3.5.RELEASE -->
  </parent>
  <groupId>foo</groupId>
  <artifactId>foo-bar</artifactId>
  <version>0.0.1-SNAPSHOT</version>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <!-- control build behavior -->
    <skipTests>false</skipTests>
    <maven.deploy.skip>true</maven.deploy.skip>
    <maven.javadoc.skip>true</maven.javadoc.skip>
    <maven.javadoc.failOnWarnings>false</maven.javadoc.failOnWarnings>
    <maven.site.skip>false</maven.site.skip> <!-- consumed by maven-site-plugin -->
    <maven.site.deploy.skip>true</maven.site.deploy.skip> <!-- consumed by maven-site-plugin -->
    <generateProjectInfo>false</generateProjectInfo> <!-- consumed by maven-site-plugin -->
    <generateReports>true</generateReports> <!-- consumed by maven-site-plugin -->
    <doclint>none</doclint> <!-- http://maven.apache.org/plugins/maven-javadoc-plugin/javadoc-mojo.html#doclint -->
    <findbugs.skip>true</findbugs.skip>
    <checkstyle.skip>true</checkstyle.skip>
    <dependencies.release.updatePolicy>daily</dependencies.release.updatePolicy> <!-- always | daily | never -->
    <!-- versions for Java SDK and dependencies -->
    <java.version>1.9</java.version>
    <jsr305.version>3.0.2</jsr305.version> <!-- https://mvnrepository.com/artifact/com.google.code.findbugs/jsr305 -->
    <validation-api.version>2.0.1.Final</validation-api.version> <!-- https://mvnrepository.com/artifact/javax.validation/validation-api -->
    <hibernate-validator.version>6.1.2.Final</hibernate-validator.version> <!-- https://mvnrepository.com/artifact/org.hibernate.validator/hibernate-validator -->
    <slf4j.version>1.7.30</slf4j.version> <!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-api -->
    <logback.version>1.2.3</logback.version> <!-- https://mvnrepository.com/artifact/ch.qos.logback/logback-classic -->
    <janino.version>3.1.0</janino.version> <!-- https://mvnrepository.com/artifact/org.codehaus.janino/janino -->
    <junit.version>4.12</junit.version>
    <junit5.version>5.6.1</junit5.version> <!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-engine -->
    <testng.version>6.9.10</testng.version>
    <mockito.version>3.1.0</mockito.version> <!-- affect the dependency version of spring-starter-test module -->
    <commons-lang3.version>3.9</commons-lang3.version> <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
    <commons-validator.version>1.6</commons-validator.version> <!-- https://mvnrepository.com/artifact/commons-validator/commons-validator -->
    <commons-collections4.version>4.4</commons-collections4.version> <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-collections4 -->
    <typesafe-config.version>1.3.1</typesafe-config.version>
    <swagger.version>2.0.8</swagger.version> <!-- https://mvnrepository.com/artifact/io.swagger.core.v3 -->
    <springfox-swagger2.version>2.9.2</springfox-swagger2.version> <!-- https://mvnrepository.com/artifact/io.springfox/springfox-swagger2 -->
    <mybatis.version>3.5.1</mybatis.version> <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
    <jjwt.version>0.10.7</jjwt.version> <!-- https://mvnrepository.com/artifact/io.jsonwebtoken -->
    <web3j.version>4.8.0</web3j.version> <!-- https://mvnrepository.com/artifact/org.web3j -->
    <okhttp.version>4.3.1</okhttp.version> <!-- https://mvnrepository.com/artifact/com.squareup.okhttp3 -->
    <!-- version for Maven plugins -->
    <maven-enforcer-plugin.version>3.0.0-M3</maven-enforcer-plugin.version> <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-enforcer-plugin -->
    <maven-compiler-plugin.version>3.8.1</maven-compiler-plugin.version> <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-compiler-plugin -->
    <maven-surefire-plugin.version>2.22.2</maven-surefire-plugin.version> <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-surefire-plugin -->
    <maven-jar-plugin.version>3.2.0</maven-jar-plugin.version> <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-jar-plugin -->
    <maven-site-plugin.version>3.9.0</maven-site-plugin.version> <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-site-plugin -->
    <maven-javadoc-plugin.version>3.2.0</maven-javadoc-plugin.version> <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-javadoc-plugin -->
    <duplicate-finder-maven-plugin.version>1.4.0</duplicate-finder-maven-plugin.version> <!-- https://mvnrepository.com/artifact/org.basepom.maven/duplicate-finder-maven-plugin -->
    <findbugs-maven-plugin.version>3.0.5</findbugs-maven-plugin.version> <!-- https://mvnrepository.com/artifact/org.codehaus.mojo/findbugs-maven-plugin -->
    <maven-checkstyle-plugin.version>3.1.1</maven-checkstyle-plugin.version> <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-checkstyle-plugin -->
    <maven-eclipse-plugin.version>2.10</maven-eclipse-plugin.version> <!-- https://mvnrepository.com/artifact/org.apache.maven.plugins/maven-eclipse-plugin -->
    <swagger-maven-plugin.version>3.1.8</swagger-maven-plugin.version> <!-- https://github.com/kongchen/swagger-maven-plugin -->
    <swagger-codegen-maven-plugin.version>3.0.0-rc1</swagger-codegen-maven-plugin.version> <!-- https://mvnrepository.com/artifact/io.swagger/swagger-codegen-maven-plugin -->
    <swagger-codegen-maven-plugin.v3.version>3.0.10</swagger-codegen-maven-plugin.v3.version> <!-- https://mvnrepository.com/artifact/io.swagger.codegen.v3/swagger-codegen-maven-plugin -->
    <web3j-maven-plugin.version>4.5.11</web3j-maven-plugin.version> <!-- https://mvnrepository.com/artifact/org.web3j/web3j-maven-plugin -->
    <exec-maven-plugin>1.6.0</exec-maven-plugin>
    <maven.compiler.source>${java.version}</maven.compiler.source>
    <maven.compiler.target>${java.version}</maven.compiler.target>
  </properties>

  <repositories>
    <!-- For more repositories, refer https://mvnrepository.com/repos -->
    <repository>
      <id>central</id>
      <url>https://repo1.maven.org/maven2/</url>
      <releases>
        <updatePolicy>${dependencies.release.updatePolicy}</updatePolicy>
      </releases>
      <snapshots><enabled>false</enabled></snapshots>
    </repository>
    <repository>
      <id>spring-libs-milestone</id>
      <url>https://repo.spring.io/libs-milestone</url>
      <releases><updatePolicy>${dependencies.release.updatePolicy}</updatePolicy><releases>
      <snapshots><enabled>false</enabled></snapshots>
    </repository>
    <repository>
      <id>java.net.public</id>
      <url>https://maven.java.net/content/groups/public/</url>
      <releases>
        <updatePolicy>${dependencies.release.updatePolicy}</updatePolicy>
      </releases>
      <snapshots><enabled>true</enabled></snapshots>
    </repository>
    <repository>
      <id>jcenter-snapshots</id>
      <name>jcenter</name>
      <url>https://jcenter.bintray.com/</url>
      <releases><enabled>false</enabled></releases>
    </repository>
  </repositories>

  <pluginRepositories>
    <pluginRepository>
      <id>central</id>
      <url>https://repo1.maven.org/maven2/</url>
      <releases>
        <updatePolicy>${dependencies.release.updatePolicy}</updatePolicy>
      </releases>
      <snapshots><enabled>false</enabled></snapshots>
    </pluginRepository>
    <pluginRepository>
      <id>spring-plugins</id>
      <url>https://repo.spring.io/plugins-release/</url>
      <releases><updatePolicy>${dependencies.release.updatePolicy}</updatePolicy></releases>
      <snapshots><enabled>false</enabled></snapshots>
    </pluginRepository>
  </pluginRepositories>

  <reporting>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-project-info-reports-plugin</artifactId>
        <reportSets>
          <reportSet>
            <reports>
              <report>index</report>
            </reports>
          </reportSet>
        </reportSets>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-jxr-plugin</artifactId>
        <reportSets>
          <reportSet>
            <id>aggregate</id>
            <reports>
              <report>aggregate</report>
              <report>test-aggregate</report>
            </reports>
          </reportSet>
        </reportSets>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-javadoc-plugin</artifactId>
        <reportSets>
          <reportSet>
            <id>aggregate</id>
            <reports>
              <report>aggregate</report>
            </reports>
          </reportSet>
        </reportSets>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-pmd-plugin</artifactId>
        <configuration>
          <!-- For more, refer https://maven.apache.org/plugins/maven-pmd-plugin/pmd-mojo.html -->
          <aggregate>true</aggregate>
          <linkXRef>true</linkXRef>
          <includeXmlInSite>true</includeXmlInSite>
          <skipEmptyReport>true</skipEmptyReport>
          <skipPmdError>true</skipPmdError>
        </configuration>
      </plugin>
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>findbugs-maven-plugin</artifactId>
      </plugin>
    </plugins>
  </reporting>

  <build>
    <plugins>
      <!-- frameworks support -->
      <plugin>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-maven-plugin</artifactId>
      </plugin>
      <plugin>
        <groupId>org.web3j</groupId>
        <artifactId>web3j-maven-plugin</artifactId>
        <version>${web3j-maven-plugin.version}</version>
      </plugin>
      <!-- core and baseline -->
      <plugin>
        <groupId>org.basepom.maven</groupId>
        <artifactId>duplicate-finder-maven-plugin</artifactId>
        <version>${duplicate-finder-maven-plugin.version}</version>
        <executions>
          <execution>
            <id>find-duplicate-classes</id>
            <phase>prepare-package</phase>
            <goals>
              <goal>check</goal>
            </goals>
          </execution>
        </executions>
        <configuration>
          <!-- For more, refer https://github.com/basepom/duplicate-finder-maven-plugin/wiki -->
          <skip>false</skip>
          <checkCompileClasspath>false</checkCompileClasspath>
          <checkRuntimeClasspath>true</checkRuntimeClasspath>
          <checkTestClasspath>false</checkTestClasspath>
          <ignoredResourcePatterns>
            <ignoredResourcePattern>about\.html</ignoredResourcePattern>
          </ignoredResourcePatterns>
          <ignoredClassPatterns>
            <ignoredClassPattern>META-INF\.versions\.9\.module-info</ignoredClassPattern>
          </ignoredClassPatterns>
          <ignoredDependencies>
            <dependency>
              <groupId>org.slf4j</groupId>
              <artifactId>jcl-over-slf4j</artifactId>
            </dependency>
          </ignoredDependencies>
        </configuration>
      </plugin>
      <plugin>
        <!-- https://maven.apache.org/enforcer/maven-enforcer-plugin/ -->
        <!-- `enforcer:enforce` at `validate` phase -->
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-enforcer-plugin</artifactId>
        <version>${maven-enforcer-plugin.version}</version>
        <executions>
          <execution>
            <id>enforce-java</id>
            <goals>
              <goal>enforce</goal>
            </goals>
            <configuration>
              <!-- For more standard rules, refer http://maven.apache.org/enforcer/enforcer-rules/ -->
              <rules>
                <requireJavaVersion>
                  <version>${java.version}</version>
                </requireJavaVersion>
                <requireMavenVersion>
                  <version>3.0</version>
                </requireMavenVersion>
              </rules>
            </configuration>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>${maven-compiler-plugin.version}</version>
        <inherited>true</inherited>
        <configuration>
          <source>${java.version}</source>
          <target>${java.version}</target>
        </configuration>
      </plugin>
      <plugin>
        <!-- For more, refer https://maven.apache.org/surefire/maven-surefire-plugin/ -->
        <!-- `surefire:test` at `test` phase -->
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-surefire-plugin</artifactId>
        <version>${maven-surefire-plugin.version}</version>
      </plugin>
      <plugin>
        <!-- https://maven.apache.org/plugins/maven-jar-plugin/ -->
        <!-- `jar:jar` at `package` phase -->
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-jar-plugin</artifactId>
        <version>${maven-jar-plugin.version}</version>
        <configuration>
          <!-- For more on Maven archiver, refer http://maven.apache.org/shared/maven-archiver/index.html -->
          <archive>
            <addMavenDescriptor>false</addMavenDescriptor>
            <forced>true</forced>
            <index>true</index>
            <manifest>
              <addClasspath>false</addClasspath>
              <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
              <addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
              <addExtensions>false</addExtensions>
              <classpathLayoutType>simple</classpathLayoutType>
            </manifest>
            <manifestEntries>
              <Source-Revision>${project.svn.revision}</Source-Revision>
            </manifestEntries>
          </archive>
        </configuration>
      </plugin>
      <!-- reporting -->
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-site-plugin</artifactId>
        <version>${maven-site-plugin.version}</version>
        <dependencies>
          <dependency>
            <groupId>org.apache.maven.wagon</groupId>
            <artifactId>wagon-ssh</artifactId>
            <version>2.12</version>
          </dependency>
        </dependencies>
      </plugin>
      <plugin>
        <!-- https://maven.apache.org/plugins/maven-javadoc-plugin/ -->
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-javadoc-plugin</artifactId>
        <version>${maven-javadoc-plugin.version}</version>
        <configuration>
          <javadocExecutable>${java.home}/bin/javadoc</javadocExecutable>
          <!-- <javadocVersion>${java.version}</javadocVersion> -->
          <source>${java.version}</source>
          <maxmemory>256m</maxmemory>
          <!-- causes error with JDK 8 <additionalJOption>-Xms128m</additionalJOption> -->
          <failOnError>false</failOnError>
          <attach>true</attach> <!-- for `javadoc:jar`, refer https://maven.apache.org/plugins/maven-javadoc-plugin/jar-mojo.html#attach -->
          <docencoding>${project.reporting.outputEncoding}</docencoding>
          <encoding>${project.build.sourceEncoding}</encoding>
          <doctitle>${project.name} ${project.version} API</doctitle>
          <windowtitle>${project.name} ${project.version} API</windowtitle>
          <links>
            <link>https://docs.oracle.com/javase/8/docs/api/</link>
            <link>https://docs.oracle.com/javaee/7/api/</link>
            <link>https://docs.spring.io/spring/docs/5.1.x/javadoc-api/</link>
            <link>https://docs.spring.io/spring-boot/docs/2.1.x/api/</link>
            <link>http://www.javadoc.io/doc/com.google.code.findbugs/jsr305/${jsr305.version}</link>
            <link>http://docs.jboss.org/hibernate/beanvalidation/spec/2.0/api/</link>
            <link>http://docs.jboss.org/hibernate/validator/6.1/api/</link>
            <link>http://www.javadoc.io/doc/org.slf4j/slf4j-api/${slf4j.version}/</link>
            <link>https://junit.org/junit5/docs/${junit5.version}/api/</link>
            <link>http://commons.apache.org/proper/commons-lang/javadocs/api-${commons-lang3.version}/</link>
            <link>http://commons.apache.org/proper/commons-collections/javadocs/api-${commons-collections4.version}/</link>
            <link>https://javadoc.io/doc/org.web3j/core/${web3j.version}</link>
            <link>https://javadoc.io/doc/org.web3j/abi/${web3j.version}</link>
            <link>https://javadoc.io/doc/org.web3j/crypto/${web3j.version}</link>
            <link>https://javadoc.io/doc/org.web3j/utils/${web3j.version}</link>
          </links>
          <show>protected</show>
          <splitindex>true</splitindex>
          <stylesheet>java</stylesheet> <!-- 'java' (default) or 'maven' -->
        </configuration>
        <executions>
          <execution>
            <id>javadoc-jar</id>
            <phase>prepare-package</phase> <!-- or 'package' -->
            <goals>
              <goal>jar</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <!-- For more, refer http://gleclaire.github.io/findbugs-maven-plugin/ -->
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>findbugs-maven-plugin</artifactId>
        <version>${findbugs-maven-plugin.version}</version>
        <configuration>
          <effort>Max</effort>
          <threshold>Low</threshold>
          <!-- findbugs-maven-plugin doesn't provide aggregate goal or mode -->
          <includeFilterFile>src/config/findbugs/findbugs-exclude.xml</includeFilterFile>
          <plugins>
            <plugin>
              <groupId>com.mebigfatguy.fb-contrib</groupId>
              <artifactId>fb-contrib</artifactId>
              <version>6.8.3</version>
            </plugin>
          </plugins>
        </configuration>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-checkstyle-plugin</artifactId>
        <version>${maven-checkstyle-plugin.version}</version>
      </plugin>
      <!-- tools support -->
      <plugin>
        <!-- http://maven.apache.org/plugins/maven-eclipse-plugin/eclipse-mojo.html -->
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-eclipse-plugin</artifactId>
        <version>${maven-eclipse-plugin.version}</version>
        <configuration>
          <!-- the next two item doesn't work on m2e. m2e has its own confgiruation in Eclipse preferences -->
          <downloadJavadocs>true</downloadJavadocs>
          <downloadSources>true</downloadSources>
          <forceRecheck>false</forceRecheck>
        </configuration>
      </plugin>
      <plugin>
        <groupId>org.eclipse.m2e</groupId>
        <artifactId>lifecycle-mapping</artifactId>
        <version>1.0.0</version>
        <configuration>
          <lifecycleMappingMetadata>
            <pluginExecutions>
              <pluginExecution>
                <pluginExecutionFilter>
                  <groupId>org.apache.maven.plugins</groupId>
                  <artifactId>maven-dependency-plugin</artifactId>
                  <versionRange>[1.0.0,)</versionRange>
                  <goals><goal>copy-dependencies</goal></goals>
                </pluginExecutionFilter>
                <action><ignore /></action>
              </pluginExecution>
              <pluginExecution>
                <pluginExecutionFilter>
                  <groupId>org.apache.maven.plugins</groupId>
                  <artifactId>maven-antrun-plugin</artifactId>
                  <versionRange>[1.0.0,)</versionRange>
                  <goals><goal>run</goal></goals>
                </pluginExecutionFilter>
                <action><ignore /></action>
              </pluginExecution>
              <pluginExecution>
                <pluginExecutionFilter>
                  <groupId>org.codehaus.mojo</groupId>
                  <artifactId>aspectj-maven-plugin</artifactId>
                  <versionRange>[1.0.0,)</versionRange>
                  <goals>
                    <goal>compile</goal>
                    <goal>test-compile</goal>
                  </goals>
                </pluginExecutionFilter>
                <action><ignore /></action>
              </pluginExecution>
              <pluginExecution>
                <pluginExecutionFilter>
                  <groupId>org.codehaus.mojo</groupId>
                  <artifactId>build-helper-maven-plugin</artifactId>
                  <versionRange>[1.0.0,)</versionRange>
                  <goals><goal>parse-version</goal></goals>
                </pluginExecutionFilter>
                <action><ignore /></action>
              </pluginExecution>
              <pluginExecution>
                <pluginExecutionFilter>
                  <groupId>net.alchim31.maven</groupId>
                  <artifactId>scala-maven-plugin</artifactId>
                  <versionRange>[1.0.0,)</versionRange>
                  <goals>
                    <goal>add-source</goal>
                    <goal>compile</goal>
                    <goal>testCompile</goal>
                  </goals>
                </pluginExecutionFilter>
                <action><ignore /></action>
              </pluginExecution>
              <pluginExecution>
                <pluginExecutionFilter>
                  <groupId>io.swagger.core.v3</groupId>
                  <artifactId>swagger-maven-plugin</artifactId>
                  <versionRange>[1.0.0,)</versionRange>
                  <goals><goal>resolve</goal></goals>
                </pluginExecutionFilter>
                <action>
                  <ignore><message>swagger-maven-plugin (goal "resolve") is ignored by m2e.</message></ignore>
                </action>
              </pluginExecution>
              <pluginExecution>
                <pluginExecutionFilter>
                  <groupId>io.swagger.codegen.v3</groupId>
                  <artifactId>swagger-codegen-maven-plugin</artifactId>
                  <versionRange>[1.0.0,)</versionRange>
                  <goals><goal>generate</goal></goals>
                </pluginExecutionFilter>
                <action>
                  <ignore>
                    <message>swagger-codegen-maven-plugin (goal "generate") is ignored by m2e.</message>
                  </ignore>
                </action>
              </pluginExecution>
              <pluginExecution>
                <pluginExecutionFilter>
                  <groupId>com.github.kongchen</groupId>
                  <artifactId>swagger-maven-plugin</artifactId>
                  <versionRange>[1.0.0,)</versionRange>
                  <goals><goal>generate</goal></goals>
                </pluginExecutionFilter>
                <action>
                  <ignore>
                    <message>wagger-maven-plugin (goal "generate") is ignored by m2e.</message>
                  </ignore>
                </action>
              </pluginExecution>
            </pluginExecutions>
          </lifecycleMappingMetadata>
        </configuration>
      </plugin>
    </plugins>
  </build>

  <dependencies>
    <dependency>
      <!-- JSR 305: Annotations for Software Defect Detection (https://jcp.org/en/jsr/detail?id=305) -->
      <groupId>com.google.code.findbugs</groupId>
      <artifactId>jsr305</artifactId>
      <version>${jsr305.version}</version>
    </dependency>
    <dependency>
      <!-- JSR 330: Dependency Injection for Java -->
      <groupId>javax.inject</groupId>
      <artifactId>javax.inject</artifactId>
      <version>1</version>
    </dependency>
    <dependency>
      <!-- JSR 349: Bean Validation 1.1 (https://jcp.org/en/jsr/detail?id=349) -->
      <groupId>javax.validation</groupId>
      <artifactId>validation-api</artifactId>
      <version>${validation-api.version}</version>
    </dependency>
    <dependency>
      <!-- Hibernate Validator -->
      <groupId>org.hibernate.validator</groupId>
      <artifactId>hibernate-validator</artifactId>
      <version>${hibernate-validator.version}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>slf4j-api</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>jcl-over-slf4j</artifactId>
      <version>${slf4j.version}</version>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <groupId>org.slf4j</groupId>
      <artifactId>jul-to-slf4j</artifactId>
      <version>${slf4j.version}</version>
    </dependency>
    <dependency>
      <groupId>ch.qos.logback</groupId>
      <artifactId>logback-classic</artifactId>
      <version>${logback.version}</version>
    </dependency>
    <dependency>
      <!-- to support conditional processing of Logback config. : https://logback.qos.ch/setup.html#janino -->
      <groupId>org.codehaus.janino</groupId>
      <artifactId>janino</artifactId>
      <version>${janino.version}</version>
    </dependency>
    <dependency>
      <!-- https://junit.org/junit5/docs/current/user-guide/#running-tests-build-maven -->
      <!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-engine/5.5.1 -->
      <!-- 'junit-jupiter-engine' depends on 'junit-jupiter-api' -->
      <groupId>org.junit.jupiter</groupId>
      <artifactId>junit-jupiter-engine</artifactId>
      <version>${junit5.version}</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.testng</groupId>
      <artifactId>testng</artifactId>
      <version>${testng.version}</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.mockito</groupId>
      <artifactId>mockito-core</artifactId>
      <version>${mockito.version}</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-lang3</artifactId>
      <version>${commons-lang3.version}</version>
    </dependency>
    <dependency>
      <groupId>org.apache.commons</groupId>
      <artifactId>commons-collections4</artifactId>
      <version>${commons-collections4.version}</version>
    </dependency>
    <dependency>
      <!-- For more typesafe config, refer https://github.com/typesafehub/config -->
      <groupId>com.typesafe</groupId>
      <artifactId>config</artifactId>
      <version>${typesafe-config.version}</version>
    </dependency>
    <!-- Either web or webflux -->
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-security</artifactId>
    </dependency>
    <dependency>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-devtools</artifactId>
      <scope>runtime</scope>
    </dependency>
    <dependency>
      <!-- https://docs.spring.io/spring-boot/docs/2.1.x/reference/htmlsingle/#boot-features-testing -->
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-test</artifactId>
      <scope>test</scope>
      <exclusions>
        <exclusion>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
        </exclusion>
        <exclusion>
          <groupId>org.junit.vintage</groupId>
          <artifactId>junit-vintage-engine</artifactId>
        </exclusion>
      </exclusions>
    </dependency>
    <dependency>
      <groupId>io.swagger.core.v3</groupId>
      <artifactId>swagger-core</artifactId>
      <version>${swagger.version}</version>
    </dependency>
    <dependency>
      <groupId>javax.ws.rs</groupId>
      <artifactId>javax.ws.rs-api</artifactId>
      <version>2.1</version>
    </dependency>
    <dependency>
      <groupId>io.swagger</groupId>
      <artifactId>swagger-hibernate-validations</artifactId>
      <version>1.5.22</version>
    </dependency>
    <dependency>
      <groupId>io.springfox</groupId>
      <artifactId>springfox-swagger2</artifactId>
      <version>${springfox-swagger2.version}</version>
    </dependency>
    <dependency>
      <groupId>io.springfox</groupId>
      <artifactId>springfox-swagger-ui</artifactId>
      <version>${springfox-swagger2.version}</version>
    </dependency>
    <dependency>
      <!-- Springfox Support for JSR-303 : https://springfox.github.io/springfox/docs/2.9.2/#springfox-support-for-jsr-303 -->
      <groupId>io.springfox</groupId>
      <artifactId>springfox-bean-validators</artifactId>
      <version>${springfox-swagger2.version}</version>
    </dependency>
    <dependency>
      <groupId>org.web3j</groupId>
      <artifactId>core</artifactId>
      <version>${web3j.version}</version>
      <exclusions>
        <exclusion>
          <groupId>com.squareup.okhttp3</groupId>
          <artifactId>okhttp</artifactId>
        </exclusion>
        <exclusion>
          <groupId>com.squareup.okhttp3</groupId>
          <artifactId>logging-interceptor</artifactId>
        </exclusion>
      </exclusions>
    </dependency>
    <dependency>
      <groupId>org.web3j</groupId>
      <artifactId>codegen</artifactId>
      <version>${web3j.version}</version>
    </dependency>
    <dependency>
      <groupId>com.squareup.okhttp3</groupId>
      <artifactId>okhttp</artifactId>
      <version>${okhttp.version}</version>
    </dependency>
    <dependency>
      <groupId>com.squareup.okhttp3</groupId>
      <artifactId>logging-interceptor</artifactId>
      <version>${okhttp.version}</version>
    </dependency>
  </dependencies>
</project>

Referencing Maven project properties of List type

//@todo

This syntax works within pom.xml and Ant build files using Maven Ant plugin. But this doesn't working with resource filtering of Maven. I can't find any explain or reason for this. Is it a bug?

    ...
    <artifact:pom id="this-pom" file="${basedir}/pom.xml"/>
    <xsddoc out="${this-pom.reporting.outputDirectory}/xsddocs"
       verbose="true">
       <fileset dir="${this-pom.build.resources[0].directory}" 
          includes="**/*.xsd"/>
    </xsddoc>
    ...

Build Lifecycle, Build Phase, Plugin and Goal

• Plugin Prefix Resolution

Guidelines for multi-moduled Maven project

1. Separate parent project from container project.
2. Define properties in the parent POM file as possible.
3. Define the following properties explicitly for clearness and control.

• • Encoding related properties whose default value are dependent on platform.
    • project.build.sourceEncoding
    • project.reporting.outputEncoding
  • Properties to skip situationally unnecessary long running goals.
    • skipTests
    • maven.javadoc.skip
    • maven.deploy.skip
    • findbugs.skip
    • checkstyle.skip
  • Properties to run maven more stable way.
    • dependency.locations.enabled : refer If your maven site build is too slow
  • Paths for executable programs external to Maven
    • graphviz.home

1. Define all plugins in the <pluginManagement> element of parent POM file.

• • Don't specify version to plugin definitions in child POM files.

1. Define repositories in the parent POM file as possible.
2. Define plugins to analyze or diagnose the sources or resources of the project as a reporting plugin as possible.
3. Start values for path with ${project.basedir}, ${project.build.directory}, ${project.build.outputDirectory} or so on

• • When just specifying relative path such as 'target/classes', the result directory could be different if you build the project from the enclosing project in multi-module case.
  • If you specify the path with leading ${project.build.directory}, the resulting directory always would be one that is calculated with the current POM's project.

1. Use resources in target/classes not in src/main/resources, considering resource filtering.

Sample of parent POM in action

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

  <modelVersion>4.0.0</modelVersion>
  <groupId>thridstage</groupId>
  <artifactId>thridstage-framework-parent</artifactId>
  <version>3.0.0-SNAPSHOT</version>
  <packaging>pom</packaging>

  <name>Thirdstage Framework</name>
  <url>...</url>
  <inceptionYear>2012</inceptionYear>
  <organization>
    <name>...</name>
    <url>...</url>
  </organization>

  <prerequisites>
    <maven>3.0</maven>
  </prerequisites>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <graphviz.home>${env.GRAPHVIZ_HOME}</graphviz.home>
    <skipTests>false</skipTests>
    <maven.deploy.skip>true</maven.deploy.skip>
    <maven.javadoc.skip>false</maven.javadoc.skip>
    <maven.site.deploy.skip>true</maven.site.deploy.skip>
    <findbugs.skip>true</findbugs.skip>
    <checkstyle.skip>true</checkstyle.skip>
    <dependency.locations.enabled>false</dependency.locations.enabled>
    <antrun.echos.properties>true</antrun.echos.properties>
    <scm.url.base>...</scm.url.base>
  </properties>

  <issueManagement>
    <system>Redmine</system>
    <url>.../issues</url>
  </issueManagement>
  <scm>
    <connection>scm:svn:http:...</connection>
    <url>http:...</url>
  </scm>
  <distributionManagement>
    <repository>
      <id>...</id>
      <name>...</name>
      <url>...</url>
    </repository>
    <snapshotRepository>
      <id>...</id>
      <name>...</name>
      <url>...</url>
    </snapshotRepository>
    <site>
      <id>...</id>
      <url>sftp://.../${project.version}</url>
    </site>
  </distributionManagement>

  <repositories>
    <repository>
      <snapshots>
        <enabled>false</enabled>
      </snapshots>
      <id>thirdstag-releases</id>
      <url>...</url>
    </repository>
    <repository>
      <releases>
        <enabled>false</enabled>
      </releases>
      <snapshots>
        <enabled>true</enabled>
      </snapshots>
      <id>thirdstage-snapshots</id>
      <url>...</url>
    </repository>
    <repository>
      <snapshots>
        <enabled>false</enabled>
      </snapshots>
      <id>central2</id>
      <url>http://repo2.maven.org/maven2/</url>
    </repository>
    <repository>
      <snapshots>
        <enabled>false</enabled>
      </snapshots>
      <id>maven2-repository.dev.java.net</id>
      <name>Java.net Repository for Maven</name>
      <url>http://download.java.net/maven/2/</url>
    </repository>
    <repository>
      <snapshots>
        <enabled>false</enabled>
      </snapshots>
      <id>thirdparty</id>
      <name>3rd-party Repository</name>
      <url>http://repo.expertvill.net/nexus/content/repositories/thirdparty</url>
    </repository>
    <repository>
      <id>evolvis-3rdparty</id>
      <url>http://maven-repo.evolvis.org/3rdparty</url>
    </repository>
  </repositories>
  <pluginRepositories>
    <pluginRepository>
      <snapshots>
        <enabled>false</enabled>
      </snapshots>
      <id>central2</id>
      <url>http://repo2.maven.org/maven2/</url>
    </pluginRepository>
    <pluginRepository>
      <snapshots>
        <enabled>false</enabled>
      </snapshots>
      <id>spring-beandoc</id>
      <url>http://spring-beandoc.sourceforge.net/repo</url>
    </pluginRepository>
    <pluginRepository>
      <snapshots>
        <enabled>false</enabled>
      </snapshots>
      <id>tmatesoft-releases</id>
      <url>http://maven.tmatesoft.com/content/repositories/releases/</url>
    </pluginRepository>
    <pluginRepository>
      <releases>
        <enabled>false</enabled>
      </releases>
      <id>tmatesoft-snapshots</id>
      <url>http://maven.tmatesoft.com/content/repositories/snapshots/</url>
    </pluginRepository>
    <pluginRepository>
      <id>evolvis-3rdparty</id>
      <url>http://maven-repo.evolvis.org/3rdparty</url>
    </pluginRepository>
    <pluginRepository>
      <snapshots>
        <enabled>false</enabled>
      </snapshots>
      <id>elca-services</id>
      <url>http://el4.elca-services.ch/el4j/maven2repository</url>
    </pluginRepository>
  </pluginRepositories>

  <reporting>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-checkstyle-plugin</artifactId>
        <configuration>
          <configLocation>../thirdstage.framework.parent/src/main/config/checkstyle/checkstyle.xml</configLocation>
          <propertyExpansion>parent.basedir=../thirdstage.framework.parent</propertyExpansion>
          <failsOnError>false</failsOnError>
        </configuration>
      </plugin>
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>findbugs-maven-plugin</artifactId>
        <version>2.3.2</version>
        <configuration>
          <effort>Max</effort>
          <threshold>Low</threshold>
          <onlyAnalyze>thirdstage.framework.*</onlyAnalyze>
          <excludeFilterFile>../thirdstage.framework.parent/src/main/config/findbugs/findbugs-exclude.xml</excludeFilterFile>
          <fork>true</fork>
          <timeout>600000</timeout>
          <maxHeap>512</maxHeap>
        </configuration>
      </plugin>
    </plugins>
  </reporting>

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-antrun-plugin</artifactId>
        <executions>
          <execution>
            <id>validate-properties</id>
            <phase>validate</phase>
            <goals>
              <goal>run</goal>
            </goals>
            <configuration>
              <failOnError>true</failOnError>
              <target name="validate-properties">
                <taskdef name="if" classname="ise.antelope.tasks.IfTask" classpathref="maven.plugin.classpath" />

                <if name="antrun.echos.properties" value="true">
                  <echo>Head revision of the project "${project.artifactId}" is
                    ${project.svn.revision}.</echo>
                  <echo>project.artifactId : ${project.artifactId}</echo>
                  <echo>project.basedir : ${project.basedir}</echo>
                  <echo>project.resources.0.directory : ${project.resources.0.directory}</echo>
                  <echo>project.resources[0].directory : ${project.resources[0].directory}</echo>
                  <echo>project.parent : ${project.parent}</echo>
                  <echo>project.parent.groupId : ${project.parent.groupId}</echo>
                  <echo>project.parent.artifactId : ${project.parent.artifactId}</echo>
                  <echo>project.parent.relativePath :
                    ${project.parent.relativePath}</echo>

                  <pathconvert pathsep="${line.separator}" property="classpath.maven.plugin" refid="maven.plugin.classpath" />

                  <pathconvert pathsep="${line.separator}" property="classpath.maven.compile" refid="maven.compile.classpath" />
                  <echo />
                  <echo>Compile-time classpath for Maven :</echo>
                  <echo>${classpath.maven.compile}</echo>

                  <pathconvert pathsep="${line.separator}" property="classpath.maven.runtime" refid="maven.runtime.classpath" />
                  <echo />
                  <echo>Run-time classpath for Maven :</echo>
                  <echo>${classpath.maven.runtime}</echo>

                  <echo>Check Korean output : 한글이 정상적으로 보이나요?</echo>
                  
                  <!-- echo all properties passed to Ant and environment variables prefixed with 'env' -->
                  <echo>All properties given to Ant are : </echo>
                  <property environment="env" />
                  <echoproperties />
                </if>
              </target>
            </configuration>
          </execution>
        </executions>
        <dependencies>
          <dependency>
            <groupId>ise.antelope</groupId>
            <artifactId>ant-antelope-tasks</artifactId>
            <version>3.5.0</version>
          </dependency>
        </dependencies>
      </plugin>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-release-plugin</artifactId>
        <configuration>
          <!-- 
          @fixme javaHome doesn't seem to work as is explained.
          You should specify JAVA_HOME env. variable explicitly in your run configuration when running from 
          Eclipse.
           -->
          <!--  <javaHome>c:\lang\jdk1.5</javaHome> -->
          
          <!--  <mavenHome>C:\tools\maven-3.0.3</mavenHome> -->
          <tagBase>${scm.url.base}/main/tags</tagBase>
          <tagNameFormat>@{project.version}</tagNameFormat>
          <username>OhSangMoon</username>
          <autoVersionSubmodules>true</autoVersionSubmodules>
          <pomFileName>pom.xml</pomFileName>
          <arguments>-f pom.xml</arguments>
          
          <!--  not supported by release plugin oer 2.2.2
          <generateReleasePoms>true</generateReleasePoms>
          -->
        </configuration>
      </plugin>

    </plugins>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>2.3.2</version>
          <inherited>true</inherited>
          <configuration>
            <source>1.5</source>
            <target>1.5</target>
          </configuration>
        </plugin>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-site-plugin</artifactId>
          <version>3.0</version>
          <dependencies>
            <dependency>
              <groupId>org.apache.maven.wagon</groupId>
              <artifactId>wagon-ssh</artifactId>
              <version>2.0</version>
            </dependency>
          </dependencies>
        </plugin>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-jar-plugin</artifactId>
          <version>2.3.2</version>
          <configuration>
            <archive>
              <addMavenDescriptor>false</addMavenDescriptor>
              <forced>true</forced>
              <index>true</index>
              <manifest>
                <addClasspath>false</addClasspath>
                <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
                <addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
                <addExtensions>false</addExtensions>
                <classpathLayoutType>simple</classpathLayoutType>
              </manifest>
              <manifestEntries>
                <Source-Revision>${project.svn.revision}</Source-Revision>
              </manifestEntries>
            </archive>
          </configuration>
        </plugin>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-assembly-plugin</artifactId>
          <version>2.2.1</version>
        </plugin>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-javadoc-plugin</artifactId>
          <version>2.8</version>
          <configuration>
            <docencoding>${project.reporting.outputEncoding}</docencoding>
            <encoding>${project.build.sourceEncoding}</encoding>
            <links>
              <link>http://download.oracle.com/javase/1.5.0/docs/api/</link>
              <link>http://download.oracle.com/javaee/5/api/</link>
            </links>
            <show>projected</show>
            <splitindex>true</splitindex>
          </configuration>
        </plugin>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-project-info-reports-plugin</artifactId>
          <version>2.4</version>
        </plugin>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-checkstyle-plugin</artifactId>
          <version>2.7</version>
        </plugin>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-antrun-plugin</artifactId>
          <version>1.7</version>
          <dependencies>
            <dependency>
              <groupId>org.apache.ant</groupId>
              <artifactId>ant</artifactId>
              <version>1.8.2</version>
            </dependency>
          </dependencies>
        </plugin>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-release-plugin</artifactId>
          <version>2.2.2</version>
          <configuration>
            <providerImplementations>
              <svn>javasvn</svn>
            </providerImplementations>
          </configuration>
          <dependencies>
            <dependency>
              <groupId>com.google.code.maven-scm-provider-svnjava</groupId>
              <artifactId>maven-scm-provider-svnjava</artifactId>
              <version>1.15</version>
            </dependency>
            <dependency>
              <groupId>org.tmatesoft.svnkit</groupId>
              <artifactId>svnkit</artifactId>
              <version>1.7.0-SNAPSHOT</version>
            </dependency>
          </dependencies>
        </plugin>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-scm-plugin</artifactId>
          <version>1.6</version>
          <configuration>
            <providerImplementations>
              <svn>javasvn</svn>
            </providerImplementations>
          </configuration>
          <dependencies>
            <dependency>
              <groupId>com.google.code.maven-scm-provider-svnjava</groupId>
              <artifactId>maven-scm-provider-svnjava</artifactId>
              <version>1.15</version>
            </dependency>
            <dependency>
              <groupId>org.tmatesoft.svnkit</groupId>
              <artifactId>svnkit</artifactId>
              <version>1.7.0-SNAPSHOT</version>
            </dependency>
          </dependencies>
        </plugin>

        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-dependency-plugin</artifactId>
          <version>2.4</version>
        </plugin>

        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-eclipse-plugin</artifactId>
          <version>2.8</version>
          <configuration>
            <!-- the next two item doesn't work on m2e. m2e has its own confgiruation in Eclipse preferences -->
            <downloadSources>true</downloadSources>
            <downloadJavaDocs>true</downloadJavaDocs>
          </configuration>
        </plugin>

        <plugin>
          <groupId>org.codehaus.mojo</groupId>
          <artifactId>properties-maven-plugin</artifactId>
          <version>1.0-alpha-2</version>
        </plugin>
        <plugin>
          <groupId>org.codehaus.mojo</groupId>
          <artifactId>maven-springbeandoc-plugin</artifactId>
          <version>1.0.8-SNAPSHOT</version>
        </plugin>
        <plugin>
          <groupId>com.google.code.maven-svn-revision-number-plugin</groupId>
          <artifactId>maven-svn-revision-number-plugin</artifactId>
          <version>1.7</version>
          <executions>
            <execution>
              <phase>validate</phase>
              <goals>
                <goal>revision</goal>
              </goals>
              <configuration>
                <entries>
                  <entry>
                    <path>${project.basedir}</path>
                    <prefix>project.svn</prefix>
                    <depth>infinity</depth>
                    <reportUnversioned>true</reportUnversioned>
                    <reportIgnored>false</reportIgnored>
                    <reportOutOfDate>false</reportOutOfDate>
                  </entry>
                </entries>
              </configuration>
            </execution>
          </executions>
          <dependencies>
            <dependency>
              <groupId>org.tmatesoft.svnkit</groupId>
              <artifactId>svnkit</artifactId>
              <version>1.7.0-SNAPSHOT</version>
            </dependency>
          </dependencies>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

Printing details of goals in a specific plugin

Use help plugin with detail and plugin options

$ mvn help:describe -Dplugin=io.swagger.codegen.v3:swagger-codegen-maven-plugin -Ddetail=true

• How to display a list of available goals? (Nov 4 '09)

Dependency on local library not in Maven repository and with no POM file

Sometimes your project may have dependency on a JAR file that is not registered to any of Maven repositories and so have no it's own POM file. In this case, you can use <systemPath> element to specify your module's dependency on it.

<dependencies>
  ...
  <dependency>
    <groupId>unknown</groupId>
    <artifactId>abcd</artifactId>
    <version>1.0</version>
    <type>jar</type>
    <scope>system</scope>
    <systemPath>${project.basedir}/lib/abcd.jar</systemPath>
  </dependency>
  ...
</dependencies>

Note that systemPath could be specified only with system scope. You should specify groupId, artifactId, and version 'cause they are mandatory but you can specify any value and don't need pom file.

Escaping expression interpolation

It may necessary not to interpolate Maven expression in resources. In other words, you just want to leave ${some-property} as it is. For this, you can specify the escape string with escapeString parameter of maven-resource-plugin. You can also define maven.resources.escapeString property in your POM file.

For more refer this page : http://maven.apache.org/plugins/maven-resources-plugin/resources-mojo.html#escapeString

Deploying Javadoc JAR file along with

Add configuration for Maven deploy plugin including target repository and path to JAR file.

      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-deploy-plugin</artifactId>
        <version>${maven-deploy-plugin.version}</version>
        <configuration>
          <file>${project.build.directory}/${project.artifactId}-${project.version}.jar</file>
          <!-- specify credentials to access the following repoisoty into settings file ('~/.m2/settings.xml') -->
          <repositoryId>skcc-bc-release</repositoryId>
          <url>https://bcrepo.skcc.com/repository/sk-maven-releases</url>
          <pomFile>${project.basedir}/pom.xml</pomFile>
          <javadoc>${project.build.directory}/${project.artifactId}-${project.version}-javadoc.jar</javadoc>
        </configuration>
      </plugin>

Execute 'javadoc:jar' goal first and execute 'deploy:deploy-file' goal instead of 'deploy'.

$ mvn javadoc:jar

...

$ mvn deploy:deploy-file

...

Working with Subversion working copy in format of ver. 1.7

The default configuration of Maven release plugin(maven-release-plugin) up to ver. 2.2.2 or Maven scm plugin(maven-scm-plugin) up to ver. 1.6 can't work correctly with Subversion working copy in format of ver. 1.7.
To solve this problem, you should override the configuration of release plugin or scm plugin to use maven-scm-provider-svnjava and svnkit 1.7.

<plugin>
   <groupId>org.apache.maven.plugins</groupId>
   <artifactId>maven-release-plugin</artifactId>
   <version>2.2.2</version>
   <configuration>
      <providerImplementations>
         <svn>javasvn</svn>
      </providerImplementations>
   </configuration>
   <dependencies>
      <dependency>
         <groupId>com.google.code.maven-scm-provider-svnjava</groupId>
         <artifactId>maven-scm-provider-svnjava</artifactId>
         <version>1.15</version>
      </dependency>
      <dependency>
         <groupId>org.tmatesoft.svnkit</groupId>
         <artifactId>svnkit</artifactId>
         <version>1.7.0-SNAPSHOT</version>
      </dependency>                
   </dependencies>
</plugin>
<plugin>
   <groupId>org.apache.maven.plugins</groupId>
   <artifactId>maven-scm-plugin</artifactId>
   <version>1.6</version>
   <configuration>
      <providerImplementations>
         <svn>javasvn</svn>
      </providerImplementations>
   </configuration>
   <dependencies>
      <dependency>
         <groupId>com.google.code.maven-scm-provider-svnjava</groupId>
         <artifactId>maven-scm-provider-svnjava</artifactId>
         <version>1.15</version>
      </dependency>
      <dependency>
         <groupId>org.tmatesoft.svnkit</groupId>
         <artifactId>svnkit</artifactId>
         <version>1.7.0-SNAPSHOT</version>
      </dependency>                
   </dependencies>
</plugin>

For now, svnkit 1.7 has no release and is in snapshot version.

If you let the plugins use svnkit 1.3.x which is default setting as of now, you would meet the exceptions like the following.

Caused by: org.apache.maven.shared.release.scm.ReleaseScmCommandException: Unable to commit files
Provider message:
SVN commit failed.
Command output:
svn: The path ... appears to be part of a Subversion 1.7 or greater working copy.  Please upgrade your Subversion client to use this working copy.
 at org.apache.maven.shared.release.phase.AbstractScmCommitPhase.checkin(AbstractScmCommitPhase.java:168)
 at org.apache.maven.shared.release.phase.AbstractScmCommitPhase.performCheckins(AbstractScmCommitPhase.java:148)
 at org.apache.maven.shared.release.phase.ScmCommitPreparationPhase.runLogic(ScmCommitPreparationPhase.java:75)
 at org.apache.maven.shared.release.phase.AbstractScmCommitPhase.execute(AbstractScmCommitPhase.java:79)
 at org.apache.maven.shared.release.DefaultReleaseManager.rollback(DefaultReleaseManager.java:259)
 at org.apache.maven.shared.release.DefaultReleaseManager.rollback(DefaultReleaseManager.java:238)
 at org.apache.maven.plugins.release.RollbackReleaseMojo.execute(RollbackReleaseMojo.java:56)
 ... 21 more

For more, refer the followings,

• Maven SCM Subversion Provider - Java Impl.
• svnkit download

Release process

• overall process
  • prepare-with-pom in dry mode > rollback > prepare > perform

1. Check whether the free space in file system is enough for the relative servers.
   • server hosting source repository
   • server hosting binary repository
   • server hosting site documentation
2. Synchronize all project in trunk.
3. Run release:prepare-with-pom goal in dryRun mode with following options.
   • maven.deploy.skip = false
   • resume = false
   • dryRun = true
   • maven.home = ${env_var:MAVEN_HOME}
4. Review pom.xml.tag, pom.xml.next, release-pom.xml in each project
   • pom.xml.tag ...
   • pom.xml.next ...
   • release-pom.xml ...
   • fully explicit(with no placeholder) scm information would exist only in pom.xml.tag file of aggregation project and parent project. Url of the scm should end with the name of the project.
5. Run release:rollback goal with following options.
   • maven.deploy.skip = false
   • resume = false
   • maven.home = ${env_var:MAVEN_HOME}
6. Check that all pom.xml.tag, pom.xml.next, pom.xml.backup files are deleted.
7. Run release:prepare goal with following options
   • maven.deploy.skip = false
   • resume = false
   • maven.home = ${env_var:MAVEN_HOME}
8. Check the new directory for the version and directories for projects under tag directory in source repository.
9. Run release:perform goal with following options.
   • maven.deploy.skip = false
   • resume = false
   • maven.home = ${env_var:MAVEN_HOME}
10. Refresh(F5) all projects in Eclipse.
11. Login on binary repository and check the binaries for projects are uploaded.
12. Test on the new version

references

• Maven Release Plugin

Download a specific artifact using mvn command

You can execute dependency plugin even without a pom.xml to download a specific artifact. Note that dependency plugin needs artifact and repoUrl properties specified explicitly.

# mvn org.apache.maven.plugins:maven-dependency-plugin:2.9:get -Dartifact=org.aspectj:aspectjweaver:1.8.1 -DremoteRepositories=central2::::http://repo2.maven.org/maven2/ -Dtransitive=false -Ddest=.

• References
  • dependency:get

references

• How can I download a specific Maven artifact in one command line? (Dec 13 '09)
• Maven Dependency plugin > dependency:get

Using Maven and Eclipse for Scala/Java mixed project

• Required tools and plugins
  • Scala IDE
  • m2eclipse-scala
  • scalatest-eclipse-plugin
  • scala-maven-plugin

• POM

  ...

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <java.version>1.7</java.version>
    <scala.version>2.11</scala.version>
  </properties>

  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-compiler-plugin</artifactId>
      </plugin>
      <plugin>
        <groupId>net.alchim31.maven</groupId>
        <artifactId>scala-maven-plugin</artifactId>
        <executions>
          <execution>
            <id>scala-compile</id>
            <phase>process-resources</phase>
            <goals>
              <goal>add-source</goal>
              <goal>compile</goal>
            </goals>
          </execution>
          <execution>
            <id>scala-test-compile</id>
            <phase>process-test-resources</phase>
            <goals>
              <goal>testCompile</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
    </plugins>
    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>org.apache.maven.plugins</groupId>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.5.1</version>
          <configuration>
            <source>${java.version}</source>
            <target>${java.version}</target>
          </configuration>
        </plugin>
        <plugin>
          <groupId>net.alchim31.maven</groupId>
          <artifactId>scala-maven-plugin</artifactId>
          <version>3.2.2</version>
          <configuration>
            <source>${java.version}</source>
            <target>${java.version}</target>
            <scalaVersion>${scala.version}</scalaVersion>
            <sourceDir>${project.build.sourceDirectory}/../scala</sourceDir>
            <testSourceDir>${project.build.testSourceDirectory}/../scala</testSourceDir>
          </configuration>
        </plugin>
        <plugin>
          <groupId>org.eclipse.m2e</groupId>
          <artifactId>lifecycle-mapping</artifactId>
          <version>1.0.0</version>
          <configuration>
            <lifecycleMappingMetadata>
              <pluginExecutions>
                <pluginExecution>
                  <pluginExecutionFilter>
                    <groupId>net.alchim31.maven</groupId>
                    <artifactId>scala-maven-plugin</artifactId>
                    <versionRange>[1.0.0,)</versionRange>
                    <goals>
                      <goal>add-source</goal>
                      <goal>compile</goal>
                      <goal>testCompile</goal>
                    </goals>
                  </pluginExecutionFilter>
                  <action>
                    <execute>
                      <runOnConfiguration>true</runOnConfiguration>
                      <runOnIncremental>true</runOnIncremental>
                    </execute>
                  </action>
                </pluginExecution>
              </pluginExecutions>
            </lifecycleMappingMetadata>
          </configuration>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>

  <dependencies>
    <dependency>
      <groupId>org.scalactic</groupId>
      <artifactId>scalactic_${scala.version}</artifactId>
      <version>2.2.6</version>
    </dependency>
    <dependency>
      <groupId>org.scalatest</groupId>
      <artifactId>scalatest_${scala.version}</artifactId>
      <version>2.2.6</version>
      <scope>test</scope>
    </dependency>
  </dependencies>

  ...

Simple tips and troubleshooting

• The value of Maven property "project.build.directory" in normal case is ${basedir}/target. You can confirm this using the following command line : "mvn help:evaluate -Dexpression=project.build.directory".

• Solving "org.apache.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 60" exception when running site:site goal
  Simply add a dependency on a newer version(eg. 3.8) of icu4j

• Solving "[ERROR Unable to determine if resource ... exists in .." error.]
  Or just add <dependency.locations.enabled>false</dependency.locations.enabled> into the <properties> element of POM file.

• Using <addClasspath> when you have no dependencies fails with FileNotFoundException
  Configuring to add classpath to MANIFEST file can cause unreasonable exception when running maven-jar-plugin without compile or run-time scope dependency. If you run package with -X option, you can identify exception whose stack goes like this.

org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-jar-plugin:2.3.2:jar (default-jar) on project ...: Error assembling JAR
  at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:217)
  at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
  at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
  ...
Caused by: org.apache.maven.plugin.MojoExecutionException: Error assembling JAR
  at org.apache.maven.plugin.jar.AbstractJarMojo.createArchive(AbstractJarMojo.java:223)
  ...
Caused by: org.codehaus.plexus.archiver.ArchiverException: Problem creating jar: ... (Access is denied)
  at org.codehaus.plexus.archiver.AbstractArchiver.createArchive(AbstractArchiver.java:892)
 ...
Caused by: java.io.FileNotFoundException: ... (Access is denied)
  at java.io.RandomAccessFile.open(Native Method)
  at java.io.RandomAccessFile.<init>(RandomAccessFile.java:216)
  at org.codehaus.plexus.archiver.zip.ZipFile.<init>(ZipFile.java:150)