Angular $ http错误响应statusText始终未定义

Question

我试图向用户返回一个自定义错误消息,让他们知道出现错误时出了什么问题,但我已经尝试了所有内容来显示消息,似乎没有任何东西正在捕获它.这是我的角度代码:

$scope.save = function (style) {
    styleAPIservice.addStyle(style).success(function () {
        $scope.success = "Style added successfully";
    }).error(function (data, status, headers, config, statusText) {
        $scope.error = "An error occurred while saving style: " + data + "|"+data.data+"|"+data.statusText+"|"+statusText;
    });
}

这是它调用的styleAPIservice函数:

styleAPI.addStyle = function (style) {
    return $http.post(AppRoot + "api/StyleAPI/",
        JSON.stringify(style),
            {
                headers: {
                    'Content-Type': 'application/json'
                }
            });
}

这是API函数:

[HttpPost]
public HttpResponseMessage PostStyle(Style style)
{
    if (string.IsNullOrEmpty(style.Pattern.PatternName) || string.IsNullOrEmpty(style.StockNumber))
        return Request.CreateErrorResponse(HttpStatusCode.BadRequest, "Pattern Name and Stock Number are required.");

    var checkStyle = StyleRepository.LoadStyleByStockNumber(style.StockNumber);
    if (checkStyle != null)
        return Request.CreateErrorResponse(HttpStatusCode.BadRequest, "Style number already exists. Please use update.");

    try
    {
        // Save style
    }
    catch (Exception ex)
    {
        return Request.CreateErrorResponse(HttpStatusCode.BadRequest, "Error creating style: " + ex.Message);
    }

    HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.Created, style);
    response.Headers.Location = new Uri(Url.Link("DefaultApi", new { id = style.StyleId }));
    return response;
}

以下是发生错误时返回的内容(例如Style已存在):

An error occurred while saving style: [object Object]|undefined|undefined|undefined

我究竟做错了什么？我觉得我到处搜索并尝试了所有可能的建议,但我只是不知道为什么我无法显示我的错误消息.

Answer 1

用.catch()替换.error().

$http.post('/url',json)
    .success(function(data, status, headers, config){

      // some code here

    })
    .catch(function(data, status, headers, config){ // <--- catch instead error

        data.statusText; //contains the error message

    });