Question

我有此代码：

@GetMapping(value = "/users/{id}")
@ResponseStatus(HttpStatus.OK)
public DtoUser getUserById( @PathParam("id")  @PathVariable("id") @RequestParam Long id) {
    return adminService.getUserById(id);
}

和此代码：

@ControllerAdvice
public class GlobalExceptionHandler extends ResponseEntityExceptionHandler {
    @Override
        public ResponseEntity<Object> handleHttpMessageNotReadable(
                HttpMessageNotReadableException ex, HttpHeaders headers, HttpStatus status, WebRequest request) {
            return error_with_my_info;
    }

    @Override
protected ResponseEntity<Object> handleMissingServletRequestParameter(
        MissingServletRequestParameterException ex, HttpHeaders headers,
        HttpStatus status, WebRequest request) {{
        return error_with_my_info;
    }
...
}

问题是，当我发送不带参数的请求时，调用的是 handleHttpMessageNotReadable ，而不是 handleMissingServletRequestParameter 。这是为什么？其他API端点是否可以影响此行为，例如使PUT请求处理程序具有相同的端点？我该如何做到 handleMissingServletRequestParameter ？

Answer 1

即兴：

@GetMapping(value = "/users")
@ResponseStatus(HttpStatus.OK)
public DtoUser getUserById(  @RequestParam(value="id" , required=true)Long id) {
    return adminService.getUserById(id);
}

localhost：8080？id = test 现在，如果您不传递ID，它将为您提供handleMissingServletRequestParameter。

Spring缺少查询参数异常处理

1 个答案: