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- 异常:
- javax.servlet.ServletException: org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is org.hibernate.TransactionException: JDBC begin failed:
-
- root cause
- org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is org.hibernate.TransactionException: JDBC begin failed:
-
-
- 解决方案:
- 1.
- 给jdbc url 增加 autoReconnect=true 一定能解决你的问题,可以定期观察一下 show processlist
- 改进方法如下:
- <property name="url" value="jdbc:mysql:
- 称?&useUnicode=true&characterEncoding=utf-8&autoReconnect=true"/>
-
- 2.
- 寻找支持重连的连接池。
- 注意:c3p0连接池支持重连;重连参数是:
- idleConnectionTestPeriod 设置空闲连接测试周期
- preferredTestQuery : 设置一查询语句,用于重连测试
- testConnectionOnCheckin设置为true
- testConnectionOnCheckout设置为true
-
- 在sessionFactory里配置:
- <property name="hibernateProperties">
- <props>
- <prop key="hibernate.autoReconnect">true</prop>
- </props>
- </property>
转载于:https://www.cnblogs.com/jianmang/articles/5604249.html