SpringBoot ResponseStatusException exception handler not triggered?

Hi, I'm trying to add an exception handler for ResponseStatusException in my Spring 3 project.

@ControllerAdvice
public class ErrorHandler extends ResponseEntityExceptionHandler {

    @Autowired
    private ObjectMapper objectMapper;

    @ExceptionHandler({ResponseStatusException.class})
    public ResponseEntity<Object> handle(ResponseStatusException e) {
        ObjectNode node = objectMapper.createObjectNode()
                .put("code", e.getStatusCode().value())
                .put("details", e.getMessage());

        return ResponseEntity.status(e.getStatusCode().value())
                .contentType(MediaType.APPLICATION_JSON)
                .body(node);
    }
}

But, the handler doesn't get called when I throw an exception like this:

throw new ResponseStatusException(HttpStatus.BAD_REQUEST, "No id has been provided!");

This approach works for other custom exceptions I have. But, it doesn't seem to trigger when using ResponseStatusException. I'm not sure why?

Here is my pom.xml:

<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-core</artifactId>
    <version>6.0.11</version>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
    <version>3.1.0</version>
    <exclusions>
        <exclusion>
            <groupId>org.yaml</groupId>
            <artifactId>snakeyaml</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-webflux</artifactId>
    <version>3.1.0</version>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-validation</artifactId>
    <version>3.1.0</version>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
    <version>3.1.0</version>
</dependency>

Comment From: wilkinsona

I can't reproduce the behavior that you have described using Spring Boot 3.1.0 or 3.1.2 (the latest 3.1.x release). The response is as expected:

HTTP/1.1 400 
Connection: close
Content-Type: application/json
Date: Mon, 24 Jul 2023 10:25:49 GMT
Transfer-Encoding: chunked

{
    "code": 400,
    "details": "400 BAD_REQUEST \"No id has been provided!\""
}

And logging shows your ErrorHandler being called:

2023-07-24T11:25:49.185+01:00 DEBUG 71044 --- [nio-8080-exec-1] .m.m.a.ExceptionHandlerExceptionResolver : Using @ExceptionHandler com.example.demo.ErrorHandler#handle(ResponseStatusException)

If you would like us to spend some more time investigating, please spend some time providing a complete yet minimal sample that reproduces the problem. You can share it with us by pushing it to a separate repository on GitHub or by zipping it up and attaching it to this issue.

Comment From: freid001-els

I'm not sure why but I get this response:

{
    "type": "about:blank",
    "title": "Bad Request",
    "status": 400,
    "detail": "No ids have been provided",
    "instance": "/api/",
    "properties": null
}