How to resolve the issue of log4j failing to load the configuration file?

If the log4j fails to load the configuration file, you can try the following solution:

1. Ensure that the path and name of the configuration file are correct. Verify that the path and name of the configuration file match the configuration in the code.
2. Make sure the configuration file is in the classpath. Placing the configuration file in the classpath can be achieved by either putting it in the src/main/resources directory of the project or adding it to the classpath.
3. Check the format and content of the configuration file. Make sure the format is correct and includes the necessary configuration information. You can refer to the official log4j documentation to understand the correct format and content of the configuration file.
4. Check the compatibility of the log4j version. Make sure that the log4j version used is compatible with the log4j version in the code. If the versions are not compatible, you can try upgrading or downgrading the log4j version.
5. Check if dependencies are properly imported. Make sure that the project dependencies include the correct log4j related dependencies. You can confirm if the dependencies are correctly imported by checking the project’s build file (such as pom.xml or build.gradle).
6. Check if the log output level is correctly configured. Make sure the log output level is set correctly to ensure that logs can be outputted normally. You can try setting the log level to a lower level to see if there is any log output.

If the above methods still cannot solve the issue, you can try recompiling and deploying the project, or try using a different logging framework instead of log4j.