Troubleshooting jakarta Package Issues in Gradle WSDL to Java Code Generation

Discover how to fix compilation errors in Gradle generated Java code from WSDL using Apache CXF by properly managing your dependencies.
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This video is based on the question https://stackoverflow.com/q/75704260/ asked by the user 'Mark' ( https://stackoverflow.com/u/1424124/ ) and on the answer https://stackoverflow.com/a/75705929/ provided by the user 'Dhaval Gajjar' ( https://stackoverflow.com/u/20142156/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Troubleshooting jakarta Package Issues in Gradle WSDL to Java Code Generation

When working with Gradle and Apache CXF for WSDL to Java code generation, developers often encounter a frustrating challenge: the generated source code fails to compile due to missing jakarta packages. This issue typically arises even when the necessary dependencies seem to be referenced in the build.gradle file. In this guide, we will explore why this happens and how to resolve it effectively.

Understanding the Problem

The error messages relate to the inability to find certain packages introduced by Jakarta EE during the Java compilation phase. Users may see error messages like:

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

These errors suggest that Gradle is not able to locate the jakarta packages, even though you have explicitly mentioned the corresponding dependencies in your Gradle build script. This situation can be quite confusing if you've confirmed that these libraries are included.

Context of the Issue

You may have the following dependencies in your build.gradle file:

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

Despite having listed these libraries properly for the wsdl2java task, they are not available during the compilation phase, leading to those pesky compilation errors.

The Solution

The crux of the issue lies in how Gradle handles dependencies during different phases (generation vs. compilation). While the libraries needed for code generation are specified under wsdl2java, they must also be available at compile time. Here's how to adjust your configuration to fix the problem:

Adjusting the Dependencies

Update your build.gradle file:

Modify the dependencies as follows to ensure the necessary Jakarta libraries are included in both compilation and runtime classpaths:

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

Why the Change?

By specifying jakarta.xml.bind-api and jakarta.xml.ws-api as implementation dependencies instead of wsdl2java, you ensure that they are included in the project’s compile-time classpath.

This adjustment allows your code generation to execute seamlessly while still resolving the necessary namespaces during the compilation of the generated code.

Conclusion

In summary, troubleshooting compilation errors related to missing jakarta packages when generating source code from WSDL using Gradle and Apache CXF is a matter of correctly managing your dependencies. By ensuring that the necessary libraries are marked as implementation, you'll help Gradle find the packages it needs during the compile phase, thus eliminating those frustrating errors.

Now that you’re equipped with this knowledge, you can confidently tackle similar issues and streamline your WSDL to Java project setups. Happy coding!