Spring Boot Application Failed to Start: Unsatisfied Dependency Error

This is a Spring Boot application startup failure error log. The main error information is as follows:

1. Bean creation failure: demoService, demoServiceImpl, studentMapper;
2. studentMapper creation failed because it is missing the sqlSessionFactory or sqlSessionTemplate property;
3. This ultimately led to the ApplicationContext startup failure.

Solution:

1. Check the configuration of the three Beans: demoService, demoServiceImpl, and studentMapper, ensuring that the dependency relationships between them are correct.
2. Check the configuration of studentMapper. Ensure that its sqlSessionFactory or sqlSessionTemplate property is correctly configured.
3. If you are using the MyBatis framework, try to check if the MyBatis configuration is correct, such as the MyBatis configuration file, Mapper interface, and Mapper.xml file.
4. If the above methods cannot solve the problem, try enabling debug mode to view detailed log information to better locate the problem.