Eclipse中Maven build 命令详解
Maven Build Goals：
clean 清除编译，compile 编译，test 编译并测试，install 打包并发送到本地仓库，package 只是打成jar包，并不会发送到本地仓库
测试：
run as maven build..
goals 输入 clean test
打包：
run as maven build..
goals 输入 clean package
打包并发送到本地仓库：
run as maven build..
goals 输入 clean install
