Resolving the java.lang.NoSuchMethodError: A Guide for Spring and Hibernate Users

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Handling Handler Processing Failed Error in Spring Applications

Understanding the Error

The detailed error stack trace highlights the issue:

[[See Video to Reveal this Text or Code Snippet]]

This means that the getComp method is being called, but it does not exist in the class definition that the server is using.

Causes of the Issue

Several factors might lead to this error:

Version Mismatch: The version of the MenberDao class on your server is different from the one in your local development environment.

Deployment Issues: The package containing MenberDao was either not updated or the wrong version was deployed to the server.

ClassLoader Conflicts: If multiple versions of a JAR are loaded, the runtime may resolve to an incorrect version.

Steps to Resolve the NoSuchMethodError

Step 1: Check Application JARs

You need to ensure that the correct version of the JAR file containing MenberDao is deployed. Follow these steps:

Remove Old Versions: If there are old versions within your JBoss server's library, replace or remove them to prevent conflicts.

Step 2: Redeploy Your Application

It is essential to deploy a fresh version of your application to the server:

Delete Existing Deployment: Remove the older JAR versions from the deployment directory in the JBoss server.

Step 3: Check Dependencies in Local Environment

Confirm that the local version of MenberDao matches exactly what you've deployed on the server:

Clean Build: Perform a clean build of your project to ensure that all classes are compiled freshly.

Dependency Management: If you are using Maven, Gradle, or another dependency manager, check that the dependencies are consistent.

Step 4: Adjust Classpath and Libraries

Lastly, ensure that your classpath settings do not point to outdated libraries:

Check for Classpath Conflicts: Look for other libraries in the classpath that might be conflicting with your version of MenberDao.

Conclusion

If you have further questions or encounter other issues, feel free to reach out for more assistance!