WebAPI和angular JS Excel文件下载-文件损坏 [英] WebAPI and angular JS Excel file download - file corrupted

问题描述

我正在WebAPI中生成一个Excel文件.我将其存储"在内存流中，然后将响应如下:

I'm generating an Excel file in my WebAPI. I "store" it in a memorystream and then put in the the response as follow :

var result = new HttpResponseMessage(HttpStatusCode.OK) { Content = new StreamContent(ms) };

            result.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
            result.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
            {
                FileName = projectName + ".xlsx"
            };
           // ms.Close();
            return result;

服务器端似乎正常工作.如果我将该内存流写入文件流，则文件将被创建并且可以打开而没有任何问题.

It looks like the server side is working correcty. If I'm writing that memorystream into a filestream, the file is created and can be open without any problem.

从角度来看，单击按钮时如何重新创建文件?

On angular side, how can I recreate the file when click on a button?

我尝试过这样的事情:

$scope.exportQuotas = function (projectName) {
    homeService.GetQuotas(projectName, $routeParams.token, $scope.selection).then(
             function (data) {
                 var dataUrl = 'data:application/octet-stream;' + data
                 var link = document.createElement('a');
                 angular.element(link)
                   .attr('href', dataUrl)
                   .attr('download', "bl.xlsx")
                   .attr('target', '_blank')
                 link.click();
             })
}

文件已创建，但是当我尝试打开它时，它已损坏...我试图将数据类型更改为vnd.ms-excel，但它没有用... 点击该如何获取要下载的文件?

The file is created but when I tried to open it, it's corrupted... I've tried changing the data type to vnd.ms-excel in angular but it didn't work... How can I get the file to be downloaded on click?

编辑 在Jorg回答之后，我尝试了以下操作: api返回的是:

EDIT After Jorg answer, I tried the following : What the api returns is :

Status Code: 200
Pragma: no-cache
Date: Tue, 02 Sep 2014 02:00:24 GMT
Server: Microsoft-IIS/8.0
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
Content-Type: application/binary
Access-Control-Allow-Origin: *
Cache-Control: no-cache
X-SourceFiles: =?UTF-8?B?        QzpcVXNlcnNcdHJpaGFuaC5waGFtXFByb2plY3RzXFF1b3RhUXVlcnlcUXVvdGFRdWVyeUFQSVxhcGlccXVvdGFcR2V0?=
Content-Disposition: attachment; filename=O14Y0129AUG.xlsx
Content-Length: 13347
Expires: -1

据我所见，它看起来是正确的.

From what I can see, it looks correct.

在客户端:

                 var file = new Blob([data], { type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;' });
                 var fileURL = URL.createObjectURL(file);
                 window.open(fileURL);

创建了一个excel文件，但是它仍然被破坏...

A excel file is created but it's still corrupted...

谢谢

推荐答案

我遇到了同样的问题.该文件在服务器端还可以，但是下载时已损坏.

I had the same problem. The file was OK server side, but when downloaded it became corrupt.

为我解决的是将responseType: "arraybuffer"添加到服务器请求中.

What solved it for me was to add responseType: "arraybuffer" to the server request.

然后在呼叫此线var file = new Blob([data], { type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;' });时 data变量的类型应为ArrayBuffer，而不是字符串.

Then when calling this line var file = new Blob([data], { type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;' }); The data variable should be of type ArrayBuffer, and not a string.

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