maven 使用时 帮助

maven的变量

maven定义了很多变量属性,参考这里 http://docs.codehaus.org/display/MAVENUSER/MavenPropertiesGuide

1. 内置属性
   • ${basedir } represents the directory containing pom.xml
   • ${version } equivalent to ${project.version } or ${pom.version }
2. Pom/Project properties
   所有pom中的元素都可以用 project. 前缀进行引用,以下是部分常用的
   • ${project.build.directory } results in the path to your "target" dir, this is the same as${pom.project.build.directory }
   • ${project.build. outputD irectory } results in the path to your "target/classes" dir
   • ${project.name } refers to the name of the project.
   • ${project.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
3. 本地用户设定
   所有用的的 settings.xml 中的设定都可以通过 settings. 前缀进行引用
   • ${settings.localRepository } refers to the path of the user's local repository.
   • ${maven.repo.local } also works for backward compatibility with maven1 ??
4. 环境变量
   系统的环境变量通过 env. 前缀引用
   • ${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>
5. java系统属性
   所有JVM中定义的java系统属性.
6. 用户在pom中定义的自定义属性

   <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
7. 上级工程的变量
   上级工程的pom中的变量用前缀 ${project.parent } 引用. 上级工程的版本也可以这样引用: ${parent.version }.