Mapped Statements collection does not contain value哪位大神指导这是什么错误吗
慕田峪2884171
2017-10-15 23:27
org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for Message.getListDao
### Cause: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for Message.getListDao
at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:122)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:113)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:108)
at com.imooc.dao.ListDao.getListDao(ListDao.java:45)
at com.imooc.service.ListService.getListDao(ListService.java:18)
at com.imooc.service.ListService.main(ListService.java:22)
Caused by: java.lang.IllegalArgumentException: Mapped Statements collection does not contain value for Message.getListDao
at org.apache.ibatis.session.Configuration$StrictMap.get(Configuration.java:832)
at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:665)
at org.apache.ibatis.session.Configuration.getMappedStatement(Configuration.java:658)
at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:119)
... 5 more
2回答
-
- weixin_宝慕林9537015
- 2020-06-23 19:38:21
确认xml文件没有写错，那就是位置的问题了，这是老外的答案?
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- qq_凡曦_03855849
- 2017-10-16 07:33:49
映射语句集合不包含值,原因可能是
1.mybatis的映射文件的命令空间与接口的全限定名不一致;
2有可能mybatis的映射文件名字与接口的类名字不一致;
3.还有一种情况就是接口声明的方法在映射文件里面没有。
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