背景：
1.使用maven package工程
2. 在eclipse中添加server运行时
publishing failed with multiple errors resource is out of sync with the file system
问题所在：
Eclipse produces this message when a file in an Eclipse project is changed outside of Eclipse
解决方式：
a) Don't change files outside of Eclipse
b) Refresh the workspace/project after changing files outside of Eclipse F5 or
c) Enable Window > Preferences > General > Workspace > Refresh Automatically
试用了方法c) 解决问题。