使用 Web Api 2 Angular 下载 csv 文件

我正在尝试使用 web api 2 和 Angular js 下载 csv 文件。

这是我的控制器代码

public IHttpActionResult ExportCsvData()
{
    var stream = new FileStream("Testcsv.csv", FileMode.Open, FileAccess.Read);
    var response = new HttpResponseMessage(HttpStatusCode.OK);
    response.Content = new StreamContent(stream);
    response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
    response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
    {
        FileName = "Testcsv.csv"
    };

    return Ok(response);
 }

这是我的角度代码，

var filename = 'testcsv.csv';
var contentType = 'text/csv;charset=utf-8';
var blob = new Blob([data], { type: contentType });
if (navigator.msSaveBlob) {
    navigator.msSaveBlob(blob, filename);
}

我使用的是 IE 11，但是当我在 Excel 中打开文件时，它看起来像这样，

{   "version": {
    "major": 1
    "minor": 1
    "build": -1
    "revision": -1
    "majorRevision": -1
    "minorRevision": -1   }   "content": {
    "headers": [
      {
        "key": "Content-Type"
        "value": [
          "application/octet-stream"
        ]
      }
      {
        "key": "Content-Disposition"
        "value": [
          "attachment; filename=testcsv.csv"
        ]
      }
    ]

我究竟做错了什么？

Thanks !

您需要返回一条响应消息。这Ok()将按原样序列化 HttpResponseMessage。

public IHttpActionResult ExportCsvData()
{

        var stream = new FileStream("Testcsv.csv", FileMode.Open, FileAccess.Read);
        var response = new HttpResponseMessage(HttpStatusCode.OK);
        response.Content = new StreamContent(stream);
        response.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
        response.Content.Headers.ContentDisposition = new ContentDispositionHeaderValue("attachment")
        {
            FileName = "Testcsv.csv"
        };

        return ResponseMessage(response);
 }