关于eclipase出现的problems during content assist报错问题
https://images2015.cnblogs.com/blog/1101380/201703/1101380-20170324193027783-2023850711.png 解决办法: https://images2015.cnblogs.com/blog/1101380/201703/1101380-20170324193206221-329702801.png 把下面箭头指的地方改为上面箭头的指向
