访问报错 500，刷新几次后就好了

java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was un
expectedly lost.
网上说是数据库配置问题，照着改了也没好，求大神解答一下

http://blog.csdn.net/zhq426/article/details/9787071/