如何在spring boot中发送400、401、405、403和500错误的自定义响应？

public class CustomException extends RuntimeException {
    public CustomException(String message) {
        super(message);
    }
}

@ControllerAdvice
public class GlobalExceptionHandler implements ErrorController {

    @ExceptionHandler(CustomException.class)
    public ResponseEntity<String> handleCustomException(CustomException ex) {
        return ResponseEntity.status(HttpStatus.BAD_REQUEST).body(ex.getMessage());
    }

    @Override
    public String getErrorPath() {
        return "/error";
    }
}

server.error.whitelabel.enabled=false

@RestController
public class MyController {

    @GetMapping("/example")
    public void example() {
        throw new CustomException("Custom error message");
    }
}