mybatis连接数据库查询报
18:07:25,819 ERROR [stderr] (default task-40) org.apache.ibatis.exceptions.PersistenceException:
18:07:25,819 ERROR [stderr] (default task-40) ### Error querying database. Cause: java.sql.SQLRecoverableException: IO Error: Broken pipe (Write failed)
18:07:25,819 ERROR [stderr] (default task-40) ### The error may exist in mybatis/xml/QueryInfoMapper.xml
18:07:25,819 ERROR [stderr] (default task-40) ### The error may involve mybatis.mapper.QueryInfoMapper.queryInfoFromOpera-Inline
18:07:25,819 ERROR [stderr] (default task-40) ### The error occurred while setting parameters
18:07:25,819 ERROR [stderr] (default task-40) ### SQL: SELECT UDFC08 FROM( SELECT UDFC08 FROM RESERVATION_NAME WHERE RESV_NAME_ID = ? ) WHERE ROWNUM = 1
18:07:25,819 ERROR [stderr] (default task-40) ### Cause: java.sql.SQLRecoverableException: IO Error: Broken pipe (Write failed)
18:07:25,821 ERROR [stderr] (default task-40) at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
18:07:25,821 ERROR [stderr] (default task-40) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:150)
18:07:25,821 ERROR [stderr] (default task-40) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141)
18:07:25,821 ERROR [stderr] (default task-40) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:77)
18:07:25,822 ERROR [stderr] (default task-40) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:82)
18:07:25,822 ERROR [stderr] (default task-40) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
18:07:25,822 ERROR [stderr] (default task-40) at com.sun.proxy.$Proxy330.queryInfoFromOpera(Unknown Source)
18:07:25,822 ERROR [stderr] (default task-40) at mybatis.QueryInfo.queryInfoFromOpera(QueryInfo.java:42)
或者提示
2017-12-12 17:41:35,730 INFO [stdout] (default task-17) ==> Parameters: 15271(String)
2017-12-12 17:41:35,733 ERROR [stderr] (default task-17) org.apache.ibatis.exceptions.PersistenceException:
2017-12-12 17:41:35,733 ERROR [stderr] (default task-17) ### Error querying database. Cause: java.sql.SQLRecoverableException: No more data to read from socket
2017-12-12 17:41:35,733 ERROR [stderr] (default task-17) ### The error may exist in mybatis/xml/QueryInfoMapper.xml
2017-12-12 17:41:35,733 ERROR [stderr] (default task-17) ### The error may involve mybatis.mapper.QueryInfoMapper.queryInfoFromOpera-Inline
2017-12-12 17:41:35,733 ERROR [stderr] (default task-17) ### The error occurred while setting parameters
2017-12-12 17:41:35,733 ERROR [stderr] (default task-17) ### SQL: SELECT UDFC08 FROM( SELECT UDFC08 FROM RESERVATION_NAME WHERE RESV_NAME_ID = ? ) WHERE ROWNUM = 1
2017-12-12 17:41:35,733 ERROR [stderr] (default task-17) ### Cause: java.sql.SQLRecoverableException: No more data to read from socket
2017-12-12 17:41:35,733 ERROR [stderr] (default task-17) at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
2017-12-12 17:41:35,733 ERROR [stderr] (default task-17) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:150)
2017-12-12 17:41:35,733 ERROR [stderr] (default task-17) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141)
2017-12-12 17:41:35,733 ERROR [stderr] (default task-17) at org.apache.ibatis.session.defaults.DefaultSqlSession.selectOne(DefaultSqlSession.java:77)
2017-12-12 17:41:35,733 ERROR [stderr] (default task-17) at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:82)
2017-12-12 17:41:35,733 ERROR [stderr] (default task-17) at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
原因是数据库重启，导致connection pool中的connections都失效了，而mybatis在开库查询数据库内容时使用的旧的数据库，重启应用即可解决。
或者每次都创建新的connection再关闭，不使用connection pool，这样会浪费一些时间。
更好的方式是使用connection pool，使用异常拦截，出现异常时通过connection pool的factory创建新的connection。