Best Way to Handle Localization For Exception Messages in Spring Boot

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As applications grow to serve a global audience, localization becomes a crucial aspect of software development. Localization allows applications to adapt to different languages and regions, providing a user-friendly experience.

In this article, I am going to share my favorite way of handling localized exceptions in a Spring Boot application.

Why We Need Localization for Exception Messages?

Localization of exception messages in the backend side is essential for creating a seamless user experience, especially in applications targeting a global audience.

By localizing these messages on the backend and sending them directly to the frontend, we can take the responsibility of managing multiple languages out of frontend developers’ shoulders. This approach ensures that the error messages are consistent across all platforms and languages, allowing frontend developers to focus on displaying these messages in a user-friendly manner, such as in an error toast.

As a result, there’s no need for the frontend to handle custom exception messages for each language…