如何在 IHttpActionResult return BadRequest(Message) 的响应正文中添加 "code"

Question

我正在返回 BadRequest("Failed Invalid Product Id")，returns 我返回代码 400 和响应正文

{
    "error": {
    "code": "",
    "message": "Failed Invalid Product Id"
     }
}

如何在响应正文中发送响应代码 400，以便获得如下响应正文：

{
    "error": {
    "code": 400,
    "message": "Failed Invalid Product Id"
     }
}

Answer 1

您可以这样做，无需测试：

return Content((HttpStatusCode)400, "Failed Invalid Product Id");

如果你真的想要自定义的方式来做到这一点，那么你需要用你自己的 class 扩展 IHttpActionResult 实现，就像下面的例子，它的灵感来自这个 link：

public class ErrorResult : IHttpActionResult
{
    private readonly Error _error;
    private readonly HttpRequestMessage _request;

    public ErrorResult(Error error, HttpRequestMessage request)
    {
        _error = error;
        _request = request;
    }

    public Task<HttpResponseMessage> ExecuteAsync(CancellationToken cancellationToken)
    {
        var err = new Error()
        {
            Code = _error.Code,
            Message = _error.Message
        };

        var response = new HttpResponseMessage(HttpStatusCode.BadRequest)
        {
            Content = new ObjectContent<Error>(err, new JsonMediaTypeFormatter()),
            RequestMessage = _request
        };
        return Task.FromResult(response);
    }
}

public class Error
{
    public string Code { get; set; }
    public string Message { get; set; }
}

然后使用它：

var err = new Error()
{
    Code = "400",
    Message = "Failed Invalid Product Id"
};

return new ErrorResult(err, Request);

这会出错 return:

如何在 IHttpActionResult return BadRequest(Message) 的响应正文中添加 "code"

How to add "code" in Response Body of IHttpActionResult return BadRequest(Message)

c#

httpresponse

asp.net-web-api