com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception:

com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception:

** BEGIN NESTED EXCEPTION **

com.mysql.jdbc.CommunicationsException
MESSAGE: Communications link failure due to underlying exception:

** BEGIN NESTED EXCEPTION **

java.io.EOFException

STACKTRACE:

我的程序出以上问题原因是： 数据库连接重写了一篇，service 里面的SQL语句错误，把jar包换成了mysql-connector-java-5.1.18-bin.jar  总结一点就是程序的错误

有这种问题错误的并且解决的可以留言在下面，让后来者更多了解