org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.type.TypeException: Could not set parameters for mapping: ParameterMapping{property='__frch_entity_0.id', mode=IN, javaType=class java.lang.String, jdbcType=null, numericScale=null, resultMapId='null', jdbcTypeName='null', expression='null'}. Cause: org.apache.ibatis.type.TypeException: Error setting non null for parameter #1 with JdbcType null . Try setting a different JdbcType for this parameter or a different configuration property. Cause: java.sql.SQLException: Parameter index out of range (1 > number of parameters, which is 0). 。这个报错原因

这个错误的原因是在进行 MyBatis 参数映射时出现了问题。具体来说，可能有以下几个原因导致该错误：

1. 参数映射错误：可能是因为参数映射配置不正确或不完整导致的。请检查你的参数映射配置，确保所有参数都正确映射。

2. JdbcType 设置错误：可能是因为某个参数的 JdbcType 设置不正确导致的。尝试为该参数设置一个不同的 JdbcType，或者检查相关配置属性是否正确。

3. 参数索引超出范围：可能是因为参数索引超出了实际参数数量导致的。请检查你的参数数量和索引是否匹配。

请根据具体情况检查以上可能的原因，并进行相应的调整和修复。如果问题仍然存在，请提供更多的上下文信息和代码，以便更好地帮助你解决问题。

相关问题

org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.type.TypeException: Could not set parameters for mapping:

org.mybatis.spring.MyBatisSystemException是MyBatis框架中的一个异常类，通常是由于MyBatis执行SQL语句时出现了异常导致的。在这个异常信息中，还包含了一个嵌套的异常org.apache.ibatis.type.TypeException，它是由于MyBatis在设置参数映射时出现了异常导致的。具体来说，这个异常信息中的错误提示是"Error setting non null for parameter #2 with JdbcType null"，意思是在设置第二个参数时出现了错误，因为JdbcType为null。这个错误通常是由于MyBatis无法正确地将Java对象映射到数据库中的数据类型导致的。解决这个问题的方法是检查MyBatis语句中的参数映射是否正确，特别是检查JdbcType是否正确设置。此外，还可以尝试将MyBatis语句中的注释去掉，因为有时注释会影响参数映射的正确性。

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.