The last packet successfully received from the server was 11,226 milliseconds ago.

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure  

The last packet successfully received from the server was 11,226 milliseconds ago.  

Caused by: java.net.SocketException: Connection reset by peer: socket write error

两种解决异常：“The last packet successfully received from the server was 11,226 milliseconds ago.   ”的办法 

          出现异常”The last packet successfully received from the server was 11,226 milliseconds ago.  “的大部分原因是由于数据库回收了连接，而系统的缓冲池不知道，继续使用被回收的连接所致的。

           以mysql为例：

           第一种解决办法，就是将mysql回收空闲连接的时间变长，mysql默认回收时间是8小时，可以在mysql目录下的my.ini(my.defaultini)中增加下面配置，将时间改为1天。

           单位是秒，最大好像是24天：

          [mysqld]

          wait_timeout=86400

         interactive_timeout=86400

           第二种解决办法，可以通过配置，让缓冲池去测试连接是否被回收，如果被回收，则不继续使用.