How to troubleshoot when the logback configuration file is not functioning properly?

If the logback configuration file is not working, there may be several possible solutions.

1. Check the configuration file path to ensure the logback configuration file is correctly located and accessible in the classpath. You can use either relative or absolute paths to specify the location of the configuration file.
2. Check the format of the configuration file: make sure that the format of the logback configuration file is correct by verifying the syntax and tags of the configuration file.
3. Check dependencies: Make sure the correct version of the logback dependency is included in the project, and that it is compatible with the configuration file. You can check the project’s dependency tree to see if there are any conflicting versions of the logback library.
4. Check the log level settings: ensure that the log level configured in the file matches the expectations. Setting the log level too high may result in some log messages being filtered out.
5. Review the Appender configuration: Make sure that the Appender configurations in the file are correct and match the desired output for the logs. For example, if a ConsoleAppender is defined in the configuration file but the logs are being output to a file, it may be necessary to modify the configuration.
6. Check the permissions of the log output directory: If logs are being output to a file, ensure that the directory has sufficient write permissions for the log file.
7. Check the logger configuration: Ensure that the logger configuration in the configuration file is correct and matches the classes that need to be logged.
8. Check the order in which the log configuration files are loaded: Sometimes, having multiple logback configuration files in a project can lead to the wrong order of loading. Make sure there is only one logback configuration file and it is loaded in the correct location.

If none of the above methods have solved the problem, you can try restarting the application and tracking the log output during the startup process to see if there are any errors or exceptions.