Fixing Issues with Java Object and Lombok in Spring Boot Controllers

Learn how to solve the compilation error caused by Lombok in your Spring Boot project by properly configuring your Maven build setup.
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Fixing Issues with Java Object and Lombok in Spring Boot Controllers

Using Lombok can significantly reduce boilerplate code in Java by automatically generating getters, setters, and other methods at compile time. However, when working with Spring Boot and enhancements like pointcuts, issues can arise if Lombok isn’t configured correctly.

In this article, we will explore a common problem developers encounter when using Lombok with Spring Boot, particularly in controllers using pointcut expressions, and how to resolve it effectively.

The Problem: Lambda Expression Compilation Errors

Many developers face compilation errors when they try to use Lombok in a Spring Boot project. Here's an error example:

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This error indicates that the expected methods generated by Lombok for the ExceptionResponseDTO are not being recognized, leading to a failure in compilation.

What is Causing This?

The Solution: Configure Lombok in Maven

To resolve these compilation issues, you need to properly configure Lombok as an annotation processor in your Maven project. Let's break down the steps to configure it correctly.

Step-by-Step Guide to Configure Lombok

Locate the <build> section where plugins are defined.

Add the Lombok dependency within your dependencies list (if it’s not already added):

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Modify the <annotationProcessorPaths> in the maven-compiler-plugin configuration to include Lombok. Here’s an example:

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Conclusion

By ensuring that Lombok is configured correctly in your Maven project, you can eliminate the compilation errors related to missing getter and setter methods. This setup not only improves your development workflow but also alleviates runtime errors that can stem from improperly handled DTOs in your Spring Boot applications.