Created by Jerry Wang, last modified on Nov 06, 2014

Project里的pom.xml dependency维护如下:本地local repository里已经下载了3.8.1对应的artifact:在maven central repository http://search.maven.org/里能找到junit所有的version:将pom文件里对junit的dependency version改为4.7:重新build，Maven会自动从central repository里download junit 4.7到local repository: