How to resolve the severe error ‘Error filterStart’ when starting TOMCAT?
When TOMCAT encounters a severe startup error “Error filterStart,” it typically indicates a problem with the deployed application. To resolve this issue, you can follow the steps below:
- Check the detailed error information in the Tomcat log files, usually located in the logs folder under the Tomcat installation directory. Review the error messages to identify the specific issue.
- Make sure that the configuration files of the deployed applications (such as web.xml) do not have any errors or omissions, especially in the configuration of filters. Check that the filter configurations are correct, including the filter name, URL pattern, filter class, etc.
- Verify that the dependencies of the application are correctly configured. Make sure all required libraries (such as JAR files) are placed in the WEB-INF/lib directory and there are no conflicts or missing dependencies.
- Check if there are any issues with the deployment directory of the application. Ensure that there are no redundant files or directories in the deployment directory of the application, and that the file structure under the WEB-INF directory is correct.
- Ensure that the version of Tomcat is compatible with the required Java version for the application. Some applications may require a specific version of Tomcat and Java, so check the relevant requirements and make a match.
- If the above steps fail to resolve the issue, you can attempt recompiling and deploying the application, or try deploying with a different version of Tomcat.
If the issue persists, it is recommended to provide detailed error information to the developers or the Tomcat community for further assistance.
