如果想知道 AngularJs 通过WebAPI 下载Excel。请看下文，这里仅提供了一种方案。　

服务器端代码如下：

protected HttpResponseMessage GenereateExcelMessage(HttpRequestMessage Request, string fileName, string generatedFile)        {            if (System.IO.File.Exists(generatedFile))            {                var response = Request.CreateResponse(HttpStatusCode.OK);                System.IO.FileStream fileStream = new System.IO.FileStream(generatedFile, System.IO.FileMode.Open, System.IO.FileAccess.Read);                System.IO.MemoryStream ms = new System.IO.MemoryStream();                fileStream.CopyTo(ms);                response.Content = new ByteArrayContent(ms.ToArray());                response.Content.Headers.ContentDisposition = new System.Net.Http.Headers.ContentDispositionHeaderValue("attachment");                response.Content.Headers.ContentDisposition.FileName = fileName;                response.Content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");                return response;            }            else            {                return Request.CreateResponse(HttpStatusCode.InternalServerError);            }        }

 

 客户端，可将以下代码放在Service里或者修改后放在Controller里

this.exportExcel = function (SearchOption) {            return $http.post('/api/XXXl', { paramenters: XX }, { responseType: "arraybuffer" }).then(function (response) {                var data = new Blob([response.data], { type: response.headers('Content-Type') });                var filename = response.headers('Content-Disposition').split(';')[1].trim().substr('filename='.length);                FileSaver.saveAs(data, filename);            });        };