Spring数据需要验证

Question

我尝试使用@ControllerAdvise+@ExceptionHandler来捕获ConstraintViolationException，但是它似乎是以前捕获的，抛出的是TransactionSystemException。

验证数据是非常基本的事情，但出于某种原因，在搜索了很多次之后，我还没有找到解决方案。

编辑：显示代码：

@ControllerAdvice
public class ConstraintViolationExceptionHandler extends  ResponseEntityExceptionHandler {

    @ExceptionHandler({ ConstraintViolationException.class })
    public ResponseEntity<Object> handleConstraintViolationException(
      Exception ex, WebRequest request) {

          return new ResponseEntity<Object>("test 123", HttpStatus.BAD_REQUEST);
    }
}

@ControllerAdvice
public class ConstraintViolationExceptionHandler extends  ResponseEntityExceptionHandler {

    @ExceptionHandler({ TransactionSystemException .class })
    public ResponseEntity<Object> handleConstraintViolationException(
      Exception ex, WebRequest request) {

          return new ResponseEntity<Object>("test 123", HttpStatus.BAD_REQUEST);
    }
}

Answer 1

您可以通过ControllerAdvision处理ConstraintViolationException，我已经试过了，它工作得很好，请找到下面的代码片段以供参考。

user.java

@Entity
@Getter
@Setter

public class User {

@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;

@NotNull
private String name;

@NotNull
private String surname;
}

userrepository.java

@RepositoryRestResource
public interface UserRepository extends JpaRepository<User, Long> {
}

@ControllerAdvice
public class GlobalExceptionHandler {
    @ExceptionHandler(ConstraintViolationException.class)
    public ResponseEntity<?> handlerException(ConstraintViolationException e) {
        final List<Object> errors = new ArrayList<>();
        e.getConstraintViolations().stream().forEach(fieldError -> {
            Map<String, Object> error = new HashMap<>();
            error.put("path", String.valueOf(fieldError.getPropertyPath()));
            error.put("messgae", fieldError.getMessage());
            errors.add(error);
        });
        HttpStatus httpStatus = HttpStatus.BAD_REQUEST;
        Map<String, Object> body = new HashMap<>();
        body.put("error", errors);
        return new ResponseEntity<>(body, httpStatus);
    }
}

curl --location --request POST 'http://localhost:8080/users' \
--header 'Content-Type: application/json' \
--data-raw '{}'

Status: 400 BAD REQUEST
{"error":[{"path":"surname","messgae":"must not be null"},{"path":"name","messgae":"must not be null"}]}