👀 Views: 485 💬 Answers: 1 📅 Created: 2025-06-14

spring-boot rest jpa http debugging Java

I'm sure I'm missing something obvious here, but I'm refactoring my project and I'm confused about I'm relatively new to this, so bear with me. I'm working with a `500 Internal Server behavior` when trying to send a `PATCH` request to update an entity in my Spring Boot REST API... The endpoint is supposed to update a user's details, but it fails without providing much detail in the response. Here's what I have: ```java @RestController @RequestMapping("/api/users") public class UserController { @Autowired private UserRepository userRepository; @PatchMapping("/{id}") public ResponseEntity<User> updateUser(@PathVariable Long id, @RequestBody User userUpdates) { return userRepository.findById(id) .map(user -> { user.setName(userUpdates.getName()); user.setEmail(userUpdates.getEmail()); return ResponseEntity.ok(userRepository.save(user)); }) .orElseGet(() -> ResponseEntity.notFound().build()); } } ``` The `userUpdates` object is populated correctly when I send the request. I'm using the following JSON for the `PATCH`: ```json { "name": "New Name", "email": "new.email@example.com" } ``` However, when I hit `/api/users/1` with a `PATCH` method, I receive the behavior: ``` {"timestamp":"2023-10-25T12:34:56.789+00:00","status":500,"behavior":"Internal Server behavior","message":"Something went wrong","path":"/api/users/1"} ``` I've tried debugging, and it seems to be happening during the call to `userRepository.save(user)`. I'm using Spring Boot 2.5.4 with Spring Data JPA and H2 in-memory database for testing. I'm also certain that the user with ID 1 exists in the database. I've checked my `User` entity for any potential issues, but it appears to be correctly annotated with `@Entity` and the fields are set up correctly. Here’s a snippet of the `User` class: ```java @Entity public class User { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Long id; private String name; private String email; // Getters and Setters } ``` I've also enabled DEBUG level logging for Spring, but it doesn't give any additional insights into the behavior. What could I be missing that would cause a 500 behavior during this update? Any advice on how to handle or debug this would be greatly appreciated! I'd really appreciate any guidance on this. This is my first time working with Java latest. What am I doing wrong? My development environment is macOS. Thanks for taking the time to read this! My team is using Java for this REST API.