它编译,运行单元测试并打包项目成一个 jar 文件,并把它放在 project/target 文件夹。如果出错:ERROR: Unable to locate the Javac Compiler in:, C:\Program Files (x86)\Java\jre6\..\lib\tools.jar,Please ensure you are using JDK 1.4 or above and,not a JRE (the com.sun.tools.javac.Main class is required)...