Fix Tomcat Garbled Characters & Crashes

There could be multiple reasons for the Tomcat encoding error and crash issue. Here are some possible solutions:

1. Check the character encoding settings in the Tomcat server configuration file to ensure it is set to the correct encoding, typically UTF-8. Look for the configuration items related to “URIEncoding” and “useBodyEncodingForURI” in the server.xml file located in the conf directory of Tomcat.
2. Verify if the application code correctly handles character encoding. Make sure to use the proper character encoding when dealing with input and output. For example, in JSP, you can set the character encoding for a page using the directive <%@ page pageEncoding="UTF-8" %>.
3. Check if the database connection used by the application is correctly set up with the proper character encoding. If there are garbled characters when the application connects to the database, you may need to add a character encoding parameter in the database connection string, such as useUnicode=true&characterEncoding=UTF-8.
4. Ensure that the third-party libraries or frameworks used in the application support character encoding settings, and make sure they are properly configured.
5. Check the Tomcat log files for any relevant error or exception messages. Investigate and resolve according to the error information.
6. If the above methods do not work, you can try reinstalling the Tomcat server and make sure that the configuration files and applications are correctly set up with the character encoding.

Please note that the above methods are just common solutions, and specific solutions may vary depending on the situation. If the problem persists, please refer to the official documentation for Tomcat or seek relevant support.