Question

我想使用blob从我的角度控制器下载一个excel。

mvc应用程序的服务器代码是

    [HttpGet]    
    public HttpResponseMessage Download(SearchModel search){
        string fileName = "test.xls"

        byte[] file = GetFile(search)
        HttpResponseMessage httpResponseMessage = new HttpResponseMessage(HttpStatusCode.OK)

        HttpResponseMessage httpResponseMessage = new HttpResponseMessage();                    
        httpResponseMessage.Content = new ByteArrayContent(file.ToArray());                    
        httpResponseMessage.Content.Headers.Add("x-filename", fileName);                    
        httpResponseMessage.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");                    
        httpResponseMessage.Content.Headers.ContentDisposition = new    ContentDispositionHeaderValue("attachment");                    
        httpResponseMessage.Content.Headers.ContentDisposition.FileName = fileName;                    

        return httpResponseMessage;   
    }

和js

$http({ method: 'GET', url: 'Download', params: {...some params}, responseType: 'arrayBuffer' })
    .success(function (data, status, headers) {

        headers = headers();
        var filename = headers['x-filename'];
        var contentType = headers['content-type'];
        var linkElement = document.createElement('a');
        try {
            if (window.navigator && window.navigator.msSaveOrOpenBlob) {
                window.navigator.msSaveOrOpenBlob(new Blob([data],{type: "application/octet-stream"}));
                return;
            }

            var a = $("<a style='display: none;'/>");
            var url = window.URL.createObjectURL(new Blob([data], {type: "application/octet-stream"}));
            a.attr("href", url);
            a.attr("download", "name");
            $("body").append(a);
            a[0].click();
            window.URL.revokeObjectURL(url);
            a.remove();
        }
        catch (ex) {
            console.log(ex);
        }
    })
    .error(function () {  });

但有一些问题：

javascript端的文件名未定义，而不是服务器端的test.xls
contentType是＆＃34; text / html;字符集= UTF-8＆＃34;而不是＆＃34; application / octet-stream＆＃34;在服务器端
下载的文件是

StatusCode: 200, ReasonPhrase: 'OK', Version: 1.1, Content:  System.Net.Http.ByteArrayContent, Headers:
{
  x-filename: test.pdf
  Content-Type: application/octet-stream
  Content-Disposition: attachment; filename=test.pdf
}

该文件是带有标题信息的JSON。为什么这个文件错了？

从asp.net mvc下载带blob的文件

0 个答案: