Solving JAXBException Conflicts: How to Explicitly Point JAXB to Its Stubs
Автор: vlogize
Загружено: 2025-04-07
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Discover effective strategies to address JAXBException conflicts in Java projects without renaming package paths or altering your stub structure.
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This video is based on the question https://stackoverflow.com/q/77086930/ asked by the user 'Andrey Vladimirovich' ( https://stackoverflow.com/u/11588133/ ) and on the answer https://stackoverflow.com/a/77106379/ provided by the user 'Andrey Vladimirovich' ( https://stackoverflow.com/u/11588133/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.
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Tackling JAXBException Conflicts in Java: A Comprehensive Guide
If you're working with Java and JAXB (Java Architecture for XML Binding), you may run into issues when integrating with existing libraries, especially when those libraries contain JAXB stubs that conflict with your application classes. A common error encountered in this context is the javax.xml.bind.JAXBException due to duplicate XML type names within the same package. In this post, we’ll uncover the problem and explore viable solutions to resolve these conflicts without the need to rename package paths or rework your stub structure.
Understanding the Problem
What happens when you attempt to use JAXB with classes from different libraries that contain the same XML type names? This issue presents itself as follows:
Error Encountered: You receive a javax.xml.bind.JAXBException with detailed messages about IllegalAnnotationExceptions.
Root Cause: The error generally states that two classes share the same XML type name, leading to conflicts during the JAXB context initialization.
Affected Classes: The problem typically involves anonymous classes or other classes within the conflicting packages that are recognized as the same XML type.
In this specific case, you are working with generated classes related to XACML (eXtensible Access Control Markup Language) from oasis.names.tc.xacml._3_0.core.schema.wd_17 that collide with external library stubs sharing the same namespace and package path.
Exploring Potential Solutions
To address the JAXBException without renaming packages or manually altering XML type names, consider the following solutions:
1. Explicitly Specify Classes in JAXBContext
One possible approach is to create the JAXBContext explicitly by listing all necessary classes. This ensures that JAXB only recognizes the classes defined by the user in that specific instance. Follow these steps:
List all the classes from your library that you wish to use.
Create the JAXBContext by passing your custom class array.
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