mysql Communications link failure

com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Communications link failure during rollback().看到这个错误后先查看代码，首先想到

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com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Communications link failure during rollback().看到这个错误后先查看代码，首先想到，我先打开的数据库连接，并且执行了query和insert操作都没问题啊，但是最后的回滚就出问题了，下面根据日志分析一下：



 

 



 
 
 



 
解决方案：
1. 修改Http请求时间，，连接请求超时+读取超时<60ms
2. 不要将HTTP请求放到数据库的事务操作中：
1) 在HTTP请求前执行完数据库操作，再执行HTTP请求，在更新之前操作的状态（成功、失败、未知）
2) 数据库的记录允许一定的丢数据，先执行HTTP请求，然后将执行结果在写入数据库
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