1、首先检查生产环境的机器是否ping的通和telnet的通数据库
2、排查数据库连接的参数
3、看数据量是否很大
参考：
http://blog.csdn.net/sclxf/article/details/5775125
时间： 2024-08-24 12:54:28
MySQL出现：com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure Last packet sent to the server was 0 ms ago.
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