现象：There are no resouce that can be added or removed from the server.
原因：其实就是现有的项目的属性不对。
解决办法：right click project-->properties-->project facets-->select "Dynamic web Module" and "Java"
现象：There are no resouce that can be added or removed from the server.
原因：其实就是现有的项目的属性不对。
解决办法：right click project-->properties-->project facets-->select "Dynamic web Module" and "Java"