mybatismysql连接池sql
mysql + mybatis 初步判定是mysql 8小时自动断开连接，mybatis 启动了连接池导致
连接池那边已经做了检验sql 不知道为什么依然出现问题，求解决方案！
ps:不用连接池观察2天没问题
java.io.eofexception: can not read response from server. expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
at com.mysql.jdbc.mysqlio.readfully(mysqlio.java:2926)
at com.mysql.jdbc.mysqlio.reuseandreadpacket(mysqlio.java:3344)
at com.mysql.jdbc.mysqlio.reuseandreadpacket(mysqlio.java:3334)
at com.mysql.jdbc.mysqlio.checkerrorpacket(mysqlio.java:3774)
at com.mysql.jdbc.mysqlio.sendcommand(mysqlio.java:2447)
at com.mysql.jdbc.mysqlio.sqlquerydirect(mysqlio.java:2594)
at com.mysql.jdbc.connectionimpl.execsql(connectionimpl.java:2541)
at com.mysql.jdbc.connectionimpl.setautocommit(connectionimpl.java:4882)
