How to solve the issue of Spring Boot log configuration not taking effect?

If the Spring Boot logging configuration is not working, you can try the following troubleshooting steps:

1. Check if the log configuration file is correct: ensure that the log configuration items in either application.properties or application.yml are correctly set. For example, verify if logging.level.root is set to the correct log level, such as logging.level.root=DEBUG.
2. Check if the log dependencies are added: In the pom.xml file, make sure that the correct log dependencies, such as spring-boot-starter-logging, have been added.
3. Verify if the logging framework is correctly configured: Depending on the logging framework being used, such as logback or log4j2, make sure the configuration file is placed correctly in the classpath and that the settings in the configuration file are properly configured.
4. Check for conflicts between multiple logging frameworks: If your project is using multiple logging frameworks at the same time, it may cause issues with the logging configuration not taking effect. This problem can be resolved by excluding unnecessary logging dependencies. For example, you can use the tag to exclude unwanted logging dependencies.
5. Check if the log output destination is correctly configured: Depending on the desired log output destination, such as console or file output, ensure that the relevant configuration settings are set correctly. For example, check if the logging.file and logging.path configuration settings are correctly set.
6. Check if the log level is correctly configured: make sure that the log level is set correctly if you need to output specific levels of logs. If a specific log level is set for output in the log configuration file, but a different log level is used in the code, it may cause the configuration to not take effect.
7. Restart the application: In some cases, changes to the log configuration may require restarting the application to take effect.

If the above methods still do not solve the problem, you can try to check the log output when the application starts up to better locate the issue.