👀 Views: 16 💬 Answers: 1 📅 Created: 2025-06-25

spring-mvc rest json spring-boot Java

I'm wondering if anyone has experience with I've searched everywhere and can't find a clear answer. I'm working with a frustrating scenario while trying to implement an update functionality using Spring MVC. I'm sending a PUT request with a JSON payload to update a resource, but I'm receiving a `Request method 'PUT' not supported` behavior. The endpoint is correctly mapped to handle PUT requests, but it seems like Spring is not recognizing it. Here’s what I’ve set up: ```java @RestController @RequestMapping("/api/users") public class UserController { @PutMapping(value = "/{id}", consumes = MediaType.APPLICATION_JSON_VALUE) public ResponseEntity<User> updateUser(@PathVariable Long id, @RequestBody User user) { // update logic return ResponseEntity.ok(updatedUser); } } ``` When I send the request using Postman, I make sure to set the URL as `http://localhost:8080/api/users/1` and use the following JSON in the body: ```json { "name": "John Doe", "email": "john.doe@example.com" } ``` I’ve confirmed that the content type is set to `application/json`, yet the behavior continues. I suspect there might be something wrong with the client-side request. I tried adjusting the headers, but I still get the behavior. Here’s the request I’m sending from Postman: - Method: PUT - URL: `http://localhost:8080/api/users/1` - Headers: `Content-Type: application/json` - Body: ```json { "name": "John Doe", "email": "john.doe@example.com" } ``` I've also checked for conflicting mappings in other controllers, but none seem to overlap with this path or method. I am using Spring Boot 2.5.5 and Jackson for JSON processing. Any ideas on what could be causing this scenario and how to fix it? I'm working on a web app that needs to handle this. Thanks in advance! This issue appeared after updating to Java LTS. What are your experiences with this?