Solving the Compatibility Issue Between Spring Boot, MapStruct, and Swagger 2

Are you struggling with incompatibility issues between Spring Boot 2.5.2, MapStruct, and Swagger 2? Discover the solution that resolves the ‘package org.mapstruct does not exist’ error with simple steps!
---
This video is based on the question https://stackoverflow.com/q/68436723/ asked by the user 'James' ( https://stackoverflow.com/u/7220464/ ) and on the answer https://stackoverflow.com/a/68448613/ provided by the user 'James' ( https://stackoverflow.com/u/7220464/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: spring-boot 2.5.2 with mapstruct\lombok and swagger2 (mapstruct not work)

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/licensing
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/by-sa/4.0/ ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/by-sa/4.0/ ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Introduction

Upgrading your Spring Boot project can sometimes introduce unexpected challenges, especially when dealing with multiple dependencies. If you've recently upgraded to Spring Boot 2.5.2 and found that your Swagger 2 and MapStruct integrations don't work together, you’re not alone. Many developers encounter the error: java: package org.mapstruct does not exist when attempting to integrate these powerful libraries.

In this post, we'll dive into the compatibility issue and walk you through the steps needed to fix it.

The Problem

After upgrading to Spring Boot version 2.5.2, you may face compilation errors stating:

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

This typically occurs due to misconfiguration in your pom.xml file, particularly with how MapStruct is defined as a dependency.

Root Causes

Exclusions in Dependencies: Excluding MapStruct as a dependency within the Swagger configuration can lead to this issue.

Incorrect Dependency Artifact: Using mapstruct-jdk8 instead of the core mapstruct dependency can create problems.

The Solution

To resolve these issues effectively, follow these organized steps:

Step 1: Update Your pom.xml

In your pom.xml, where you define MapStruct as a dependency, make sure that you are using the correct artifact. Modify your dependencies as follows:

Change from:

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

To:

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

Step 2: Check Exclusions in Swagger Dependency

Ensure that you have the correct exclusions in your Swagger 2 dependency. If you've excluded MapStruct by mistake, remove the exclusion to allow MapStruct to be recognized:

Updating Your Swagger Dependency:

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

Step 3: Validate Your Build Configuration

After making these changes, ensure your Maven build configuration includes lombok and mapstruct-processor in your annotation processor paths.

Example Configuration:

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

Step 4: Build and Test Your Project

After updating these configurations, run a clean build of your project using Maven commands. This can be done through IntelliJ IDEA or your terminal:

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

Conclusion

By following the steps outlined above, you should be able to resolve the compatibility issues between Spring Boot 2.5.2, MapStruct, and Swagger 2. Upgrading dependencies can introduce unexpected issues, but with careful attention to your pom.xml, you can ensure your project runs smoothly.

If you face any further issues, feel free to reach out to the development community for support, or refer to official documentation for each library involved.

Happy coding!

Видео Solving the Compatibility Issue Between Spring Boot, MapStruct, and Swagger 2 канала vlogize