异常一 : The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
异常二 : ClassNoDefException : ServletContext.
出现原因 : mysql服务没有开启
解决办法: 开启mysql服务
使用spring框架(注解配置)实现转账操作出现莫名bug
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转载自www.cnblogs.com/gogotao/p/11548211.html
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