Question

ibatis 第一次访问时没有问题，第二次访问时出现异常，需要重启服务之后才能正常执行。

Error querying database. Cause: org.apache.ibatis.executor.ExecutorException: Executor was closed.
### The error may exist in mappers/pay/Pay.xml
### The error may involve Pay.getPayLineByNum
### The error occurred while executing a query
### Cause: org.apache.ibatis.executor.ExecutorException: Executor was closed.

Answer 1

SqlSession session = MybatisUtil.getSession();
dao实现层不要把这个放在方法外，不然session.close之后，你运行第二次不会再实例化一遍。

Answer 2

ibatis中设置一下自动清除缓存！

Answer 3

配置问题...