刚刚构建好项目，鼠标划了一下，把applicationContext.xml划到别的目录中去了，复制也复制不回去，托也拖不回去，很郁闷。控制台有报错：
Description Resource Path Location Type
Archive for required library: 'src/main/resources/applicationContext.xml' in project 'ssm_item_web' cannot be read or is not a valid ZIP file
寻觅良久，解决方法:
如图操作即可！