Coding⏱️ 2 min read📅 2026-05-31

How to Fix: Spring RestTemplate exception handling

API error handling in Spring RestTemplate

Quick Answer: Use ResponseEntity's is2xxRedirection() or is3xxRedirection() methods to check for non-200 status codes, and throw an exception accordingly.

📋 Table of Contents

  1. ⚠️ Common Causes
  2. ✅ Best Solutions to Fix It
  3. ✨ Wrapping Up

To fix the issue of not propagating exceptions when a non-200 status code is returned, you can modify your exception handling block to include all status codes that are not 200. You can achieve this by checking if the response status code falls outside the range of successful HTTP responses (200-299).

⚠️ Common Causes

  • Not checking the status code range correctly.

✅ Best Solutions to Fix It

Method 1: Propagate Exceptions Correctly

  1. Step 1: Modify the exception handling block to include all non-200 status codes.

Method 2: Use a Custom Exception Class

  1. Step 1: Create a custom exception class that extends the ApplicationException.

✨ Wrapping Up

By implementing these methods, you can ensure that exceptions are properly propagated and handled when using Spring RestTemplate.

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