How to resolve the MyBatis exception MyBatisSystemException?

The MyBatisSystemException is a runtime exception thrown by the MyBatis framework, usually caused by configuration errors or errors in executing SQL statements.

To resolve the MyBatisSystemException, you can follow these steps:

1. Verify the configuration file of MyBatis: Make sure that all the configurations in the MyBatis configuration file (such as mybatis-config.xml) are correct, including database connection information, mapper file paths, etc.
2. Ensure that the Mapper interface and Mapper XML file are matched: make sure that the method names in the Mapper interface correspond to the SQL statements in the Mapper XML file, and that the parameter types and return value types also match.
3. Check whether the SQL statement is correct: If the MyBatisSystemException is caused by an error in executing the SQL statement, then verify the accuracy of the SQL statement, including checking for syntax errors, correct table and field names, etc.
4. Check the database connection to ensure it is working properly, as any issues with the connection could potentially lead to a MyBatisSystemException.
5. Log output: Add logging to the code to view detailed information about exceptions for better problem location.

If the above methods do not solve the problem, it is recommended to check the specific exception information in order to pinpoint the issue more accurately, and try searching for relevant solutions in the official MyBatis documentation or various technical communities.