问题1：Setting property 'source' to 'org.eclipse.jst.jee.server:web_cake' did not find a matching property
解决：先停止tomcat，双击server窗口的tomcat，出现属性面板，在Server Option里勾选中public model contexts to separate XML files
问题2：Description The server encountered an unexpected condition that prevented it from fulfilling the req
解决：我这里的问题是，前端from里传递的参数name的值不一样。