How to return HTTP 400 error in Spring MVC⏱️ 2 min read📅 2026-05-31

How to Fix: How to respond with an HTTP 400 error in a Spring MVC @ResponseBody method returning String

Return HTTP 400 error with a bad request message in Spring MVC @ResponseBody method

Quick Answer: {

📋 Table of Contents

  1. 🔍 Why This Happens
  2. 🛠️ Step-by-Step Verified Fixes
  3. 🎯 Final Words

In the given scenario, you can respond with an HTTP 400 error in a Spring MVC @ResponseBody method returning String by throwing an exception of type HttpResponseException or RestResponseException and specifying the HTTP status code. Here's how to do it:

🔍 Why This Happens

  • [Cause]

🛠️ Step-by-Step Verified Fixes

Method 1: Handling Exceptions

  1. Step 1: Wrap your business logic in a try-catch block and throw an exception if the request is invalid or the data is missing.

Method 2: Using @ExceptionHandler

  1. Step 1: Add an @ExceptionHandler annotation to your controller method that handles the exception and returns the HTTP response.

🎯 Final Words

[Wrap-up]

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