How to resolve the issue of log4j failing to generate logs by date?

If log4j fails to generate logs based on date, you can try the following solutions:

1. Check the configuration file of log4j to ensure it is set up correctly. Make sure the date pattern is correctly configured and that the file path is accessible. You can refer to the official log4j documentation or other relevant tutorials for configuration guidance.
2. Check if the path to the log file is correct. Ensure that the storage path for the log file is writable and has sufficient permissions for writing.
3. Ensure that the date and time settings on the system are correct, as incorrect settings may result in log4j-generated log files not being named correctly by date.
4. Check to see if any other programs or processes are using the log file or directory. Make sure the log file is not being locked by other programs or processes.
5. Try restarting the application. Sometimes restarting the application can solve the issue of the logs failing to generate.
6. If the above methods do not solve the problem, you can try upgrading the log4j version or switching to another logging framework, as there may be compatibility issues or bugs with the log4j version.

If the issue persists, it is recommended to check the log output of log4j for any errors or exceptions, and then further investigate and resolve the issue based on the error or exception information.