大清早的就不对劲，项目里的js文件不翼而飞，缓存文件也神秘失踪。
奉劝趴在电脑上休息的同志记得先锁屏，Or you will never know what will happen!!!
eclipse找回删除/失踪文件.
The steps are as follows:
Step 1: Move your mouse to the project and click the right button.
Step 2: Find the option :Restore from the local history.
Step 3: Restore the resource you\'ve been lost.