How to solve tomcat404

Solutions to tomcat404: 1. Check whether the URL is correct; 2. Check whether the Web application is deployed correctly; 3. Check the web.xml file; 4. Check whether the port number is correct; 5. Check the Tomcat log file ; 6. Check file and directory permissions; 7. Restart the Tomcat server; 8. Check the network connection; 9. Update the Tomcat version; 10. Find related problems. Detailed introduction: 1. Check whether the URL is correct. First, confirm whether the accessed URL is correct, etc.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

When you encounter a 404 error returned by Tomcat, you can try the following solutions:

1. Check whether the URL is correct: First confirm whether the accessed URL is correct. Matches the path to the actual deployed web application. Sometimes a 404 error may occur due to a wrong path or typo.

2. Check whether the web application is deployed correctly: Ensure that the web application has been correctly decompressed or deployed to Tomcat's webapps directory. If the application is not deployed correctly, Tomcat will not be able to find the corresponding resources, resulting in a 404 error.

3. Check the web.xml file: There should be a web.xml file in the root directory of the Web application, which is the deployment descriptor of the Web application. Check whether the web.xml file exists and whether the content is correct, especially whether the content in the tag meets the specifications.

4. Check whether the port number is correct: By default, Tomcat uses the 8080 port number. If the port number of Tomcat is modified, you need to ensure that the correct port number is used when accessing the URL. Check the port number setting in the Tomcat configuration file (such as server.xml) to ensure that it is consistent with the actual port number used.

5. Check Tomcat log files: Tomcat’s log files may contain more detailed information about 404 errors. Check Tomcat log files (such as catalina.out or localhost.log) for log entries related to 404 errors for more clues.

6. Check file and directory permissions: Ensure that the Tomcat process has sufficient permissions to access the application directory and files. Sometimes, permission issues may prevent Tomcat from accessing resources, resulting in a 404 error.

7. Restart the Tomcat server: Sometimes, simply restarting the Tomcat server can solve some temporary problems. Try shutting down the Tomcat server and restarting it to see if the problem is resolved.

8. Check the network connection: If the Tomcat server is deployed on the network, ensure that the network connection is normal and that the firewall or other security settings do not block access to the Tomcat server.

9. Update Tomcat version: Sometimes, some versions of Tomcat may have known problems or vulnerabilities. Try updating to the latest version of Tomcat and see if the problem is resolved.

10. Find related issues: Use a search engine or related forums to search for information about Tomcat 404 errors. You may find solutions or suggestions for other users who encounter the same problems.

If none of the above methods solve the problem, it is recommended to provide more detailed information about the error, such as the complete error message, log file content, Tomcat configuration, etc., to better diagnose and solve the problem. At the same time, you can also consider seeking help from professionals or seeking help on relevant forums.

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