Maven variables

Maven中的内置变量

注：只是记录，方便查阅。

Build

• ${version } 版本
  
• ${basedir } 项目根目录（包含pom.xml文件的目录）

 

Project

• ${project.build.directory } results in the path to your "target" dir, this is the same as ${pom.project.build.directory }
• ${project.build. outputD irectory } results in the path to your "target/classes" dir
• ${project.name } or ${pom.name } refers to the name of the project.
• ${project.version } or ${pom.version } refers to the version of the project.
• ${project.build.finalName } refers to the final name of the file created when the built project is packaged
• ${project.packaging}package type, eg:jar, war
  

 

Local user settings

Similarly, values in the user's settings.xml can be referenced using property names with settings. prefix.

• ${settings.localRepository } refers to the path of the user's local repository

Environment variables

Environment variables can be referenced using the env prefix

• ${env.M2_HOME } returns the Maven2 installation path.
• ${java.home } specifies the path to the current JRE_HOME environment use with relative paths to get for example:
  <jvm>${java.home}../bin/java.exe</jvm>

Java system properties

All Java System Properties defined by the JVM.

 

Custom properties in the POM

User defined properties in the pom.xml.

<project>

...

   <properties>

      <my.filter.value>hello</my.filter.value>

   </properties>

...

</project>

• ${my.filter.value } will result in hello if you inserted the above XML fragment in your pom.xml

Parent Project variables

How can parent project variables be accessed?

You can use the prefix: ${project.parent }.

A good way to determine possible variables is to have a look directly at the API. I'm currently using Maven 2.2.1, and to access the Parent you can use ${project.parent }. This will return an org.apache.maven.project.MavenProject instance.

To access the parent version: ${parent.version }.

Reflection Properties

The pattern ${someX.someY.someZ } can simply sometimes mean getSomeX().getSomeY().getSomeZ() . Thus, properties such as ${project.build.directory } is translated to getProject().getBuild().getDirectory() .