java无法用Spring数据REST捕获DataIntegrityViolationException

Question

尝试使用ControllerAdvice处理DataIntegrityViolationException，并使用Spring Boot v1.3.3&；返回自定义响应；弹簧数据REST v 2.4.4。以下是我的课程：

例外控制偏差。java

@ResponseStatus(HttpStatus.CONFLICT)
@ExceptionHandler(DataIntegrityViolationException.class)
public ViolationResponse handleConflictException(DataIntegrityViolationException ex) throws Exception {
    return new ViolationResponse(ex.getMessage());
}

违规反应。java

public class ViolationResponse {

private String message;

public ViolationResponse(String message) {
    this.message = message;
}

public String getMessage() {
    return message;
}

public void setMessage(String message) {
    this.message = message;
}
}

我希望它返回409冲突HTTP状态代码和消息

{"message" : "..."}

但我得到的是404状态，而不是这个响应：

{ "timestamp": 1463382639043 "status": 404 "error": "Not Found" "exception": "org.springframework.dao.DataIntegrityViolationException" "message": "could not execute statement; SQL [n/a]; constraint [email_exists_constraint]; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement" "path": "/api/v1/register" }

我错过了什么？如何达到预期的效果

编辑：

AuthController。java

@RestController
@RequestMapping("/api/v1")
public class AuthController {
...
@RequestMapping(value = "/register", method = RequestMethod.POST)
public User register(@Valid @RequestBody User user, BindingResult result) throws ValidationException {
    if (result.hasErrors()) {
        throw new ValidationException(result.getAllErrors());
    }
    return userRepository.save(user);
}

Answer 1

在ExceptionControllerAdvice中注释方法handleConflictException。带有@ResponseBody的java。这将告诉spring从返回对象生成JSON@RestController中有@ResponseBody，@ControllerAdvice没有