在项目开发中遇到这样的问题
这是一个程序批量向数据库插入 一些用户
数据库是mysql
底层用的是数据库连接池 其中 datasource如下图所示
结果是 出现如下异常
()org.springframework.dao.DataAccessResourceFailureException: SqlMapClient operation; SQL [];
--- The error occurred in ibatis/secondary/sqlmap/task_otherthread.xml.
--- The error occurred while applying a parameter map.
--- Check the TaskOtherThreadDao.insertWoman-InlineParameterMap.
--- Check the statement (update failed).
--- Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet successfully received from the server was 5,007 milliseconds ago. The last packet sent successfully to the server was 5,006 milliseconds ago.; nested exception is com.ibatis.common.jdbc.exception.NestedSQLException:
--- The error occurred in ibatis/secondary/sqlmap/task_otherthread.xml.
--- The error occurred while applying a parameter map.
--- Check the TaskOtherThreadDao.insertWoman-InlineParameterMap.
--- Check the statement (update failed).
--- Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet successfully received from the server was 5,007 milliseconds ago. The last packet sent successfully to the server was 5,006 milliseconds ago.
结果是数据库中已经插入了1些数据
我有两个疑问
疑问1:在出异常之前,这个插入操作是一直拿着 数据库连接池中的同一个链接吗?
疑问2: 就是怎么会出现以上这个链接失败的异常
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