Spring Boot REST API的自定义异常处理

Question

我想为REST API做自定义异常处理。

这是我掌握的密码。

@PatchMapping(value="/customer/name", produces = "application/json")
public ResponseEntity<Customer> updateName(
        @RequestParam(value="customerId") Long customerId,
        @RequestParam(value="name") String name){   
        
    customerRepository.updateCustomerName(customerId, name);
            
    Customer updatedCustomer = customerRepository.findCustomer(customerId);
            
    return new ResponseEntity<Customer>(updatedCustomer, HttpStatus.OK);
            
}

@ControllerAdvice
public class CustomRestExceptionHandler extends ResponseEntityExceptionHandler{ 
    
    @ExceptionHandler(value = {Exception.class})
    public ResponseEntity<Object> handleAll(Exception ex, WebRequest request) { 
        
        return new ResponseEntity<>(
                ex, new HttpHeaders(), HttpStatus.INTERNAL_SERVER_ERROR);        
        
    }
}

String x = null;
int y = x.length();

如何使自定义错误类捕获并显示自定义错误？

谢谢

Answer 1

尝试重写HandleMethodArgumentTypeMismMatch

@ExceptionHandler({MethodArgumentTypeMismatchException.class})
public ResponseEntity<Object> handleMethodArgumentTypeMismatch( MethodArgumentTypeMismatchException ex, WebRequest request) { 
return ResponseEntity 
}