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1.下载gradle 2.2.1,解压，配置系统环境变量，在DOS中输入gradle -v 输出 Gradle 2.2.1，即表示安装成功
2.在eclipse下安装gradle插件,通过
Window->preference->gradle-arguments->配置插件环境指向JDK目录
3.用记事本打开gradle.properties文件，配置相关属性
4.Run as 选择gradle build...，输入命令 “build line”
clean：清理构建；build：执行构建任务；line：统计有效代码行数