HTTP

This tutorial explains how to use the RestClient API in Spring 6.1 for making HTTP requests. We cover setting up and customizing the RestClient, handling requests (GET, POST, PUT, DELETE), and provide an example of using it with the OpenAI API. We also discuss error handling. By the end, we’ll know how to effectively use RestClient in our projects and understand its advantages over RestTemplate.

Learn how to return HTTP 4XX errors in Spring applications. Use ResponseEntity to set the appropriate HTTP status code and response body.