mysql errors:message from server: "Host 'xxx' is blocked because of many connection errors; unblock

忽然一天，数据库连接抛了异常：null, message from server: "Host 'PC-20130201IBXI' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'"。

话说是同一IP短时间内连接数据库太多二致，记得以前也出现过这种错，解决办法记下（windows机器）：

1：登录mysql控制台：mysql -uroot -p

2：flush hosts

网上很多解决方案都试过，不是报错就是无效，试了好久，以上是适合我机器的解决方案。