nested exception is org.apache
时间: 2023-09-24 16:12:49 浏览: 40
.nestedSQLException: Cannot create PoolableConnectionFactory (ORA-28040: No matching authentication protocol)
这是MyBatis在连接Oracle数据库时出现的异常。原因是Oracle数据库的身份验证协议不匹配,需要更新数据库的身份验证协议。可以尝试更新Oracle数据库的版本或者升级JDBC驱动程序来解决这个问题。
相关问题
nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.
nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:
Error querying database. Cause: org.apache.ibatis.executor.ExecutorException: A query was run and no Result Maps were found for the Mapped Statement 'com.example.mapper.UserMapper.getUserById'. It's likely that neither a Result Type nor a Result Map was specified.
Cause: org.apache.ibatis.executor.ExecutorException: A query was run and no Result Maps were found for the Mapped Statement 'com.example.mapper.UserMapper.getUserById'. It's likely that neither a Result Type nor a Result Map was specified.
This exception is thrown when there is an issue with executing a query using MyBatis framework. In this case, the nested exception is org.apache.ibatis.exceptions.PersistenceException, which indicates that there was an error querying the database.
The specific error message states that no Result Maps were found for the Mapped Statement 'com.example.mapper.UserMapper.getUserById'. This means that either a Result Type or a Result Map was not specified for the query.
To resolve this issue, you need to make sure that the appropriate Result Type or Result Map is specified for the query in the MyBatis mapping file (XML) or in the annotation-based configuration.
nested exception is org.apache.ibatis.exceptions.TooManyResultsException
nested exception is org.apache.ibatis.exceptions.TooManyResultsException是MyBatis框架的一个异常,它表示查询结果不符合预期,返回了多个结果,但是代码期望只有一个结果。解决这个问题的步骤如下:
1. 检查SQL查询语句,确保查询条件的准确性和唯一性。
2. 确保MyBatis的映射文件(Mapper)中的查询语句使用了正确的标签,如<select>、<insert>、<update>和<delete>等。
3. 检查Mapper接口中对应的方法是否正确使用了@Select注解或其他合适的注解。
4. 如果需要返回多个结果,可以考虑使用List或其他集合类型来接收查询结果;如果只期望返回一个结果,可以使用@Select注解的resultType或resultMap属性来指定返回类型。
5. 如果以上步骤都没有解决问题,可以尝试使用MyBatis的其他查询方法,如selectList()、selectMap()等。
总之,通过检查SQL查询语句和MyBatis的配置,以及确保代码逻辑正确,可以解决nested exception is org.apache.ibatis.exceptions.TooManyResultsException异常。