数据未达到API控制器请求失败

如何解决数据未达到API控制器请求失败

我有一个应用程序，其中UI由Angular js构建，并在Asp.net mvc上后端。在按钮上单击我正在调用角度服务，该服务将json对象传递给asp.net API控制器，而不是普通的mvc控制器。这是因为API控制器必须生成excel文件并返回HttpResponseMessage。现在，当调用从角度服务转到API控制器时，数据尚未到达，并显示为失败请求。在我的路由配置中，我将URL定义为“ {controller} / {action} / {id}”。也可以正常调用常规控制器。我是否需要为api控制器添加网址，以便服务调用到达api控制器。普通的mvc控制器和api控制器也位于同一文件夹中。此外，有关信息，我还在本地开发人员的IIS上以各种设置在https中运行应用程序。以下是用于角度服务和mvc api控制器的代码。

Service: 
ServiceSlarDetails.prototype.GetSlarExcelFile = function () {
            var link,params;
            //link = baseUrl + '/SLAR/GetSlarExcelFile';
            link = baseUrl + '/File/GetSlarExcelFile';
            params = "'" + JSON.stringify(this.object) + "'";
            return $http({
                headers: { 'Content-Type': 'application/json','Accept': 'application/json' },method: 'POST',url: link,responseType: "arraybuffer",data: params
            }).then(function onSuccess(response) {
                return response.data;
            }).catch(function onError(data,status,headers,config) {
                return NewAlert.show('Oops!','Sorry,something went wrong. Please try again.','error');
            });
        };


 API CONTROLLER: 
   public class FileController : ApiController
{
    [HttpPost]
    public HttpResponseMessage GetSlarExcelFile([FromBody] string ExcelTable)
    {
        HttpResponseMessage result = new HttpResponseMessage(HttpStatusCode.OK);
        object obj = null;
        HttpResponseMessage FailReturn = new HttpResponseMessage(HttpStatusCode.NoContent);
        try
        {
            var data = (DataTable)JsonConvert.DeserializeObject(ExcelTable,(typeof(DataTable)));
            data.TableName = "Slar";
            if (data.Rows.Count > 0)
            {
                //string path = HttpContext.Current.Server.MapPath("~/ExcelFiles");
                //if (!Directory.Exists(path))
                //{
                //    Directory.CreateDirectory(path);
                //}
                using (XLWorkbook wb = new XLWorkbook())
                {

                    wb.Worksheets.Add(data);

                    MemoryStream ms = new MemoryStream();
                    {

                        //wb.SaveAs(path + "/" + DateTime.Now.Ticks + ".xlsx");
                        wb.SaveAs(ms);



                        result.Content = new ByteArrayContent(ms.GetBuffer());
                        result.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment");
                        result.Content.Headers.ContentDisposition.FileName = "Invoices.xlsx";
                        result.Content.Headers.ContentType = new MediaTypeHeaderValue("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");

                        result.Content.Headers.ContentLength = ms.Length;
                        ms.Seek(0,SeekOrigin.Begin);

                    }
                }
            }

            // obj = new { resp = data,error = "" };

        }
        catch (Exception ex)
        {
            //Logger.Error(ex.Message);
            //obj = new { resp = "",error = ex.Message.ToString() };
        }

        return result;
    }
}