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需要在配置文件里加上下面就ok了
http://blog.csdn.net/zhq426/article/details/9787071/
tomcat链接mysql时超时报错java.io.EOFException: Can not read response from server. Expected to read 4 bytes,
原文地址：http://www.cnblogs.com/softidea/p/5689344.html
