Question

有没有办法强制浏览器通过JavaScript / TypeScript打开下载窗口。我想打开下载窗口，因为大多数用户直接下载到下载文件夹，我想为用户提供重命名文件和选择下载文件夹的可能性。

我启用了这样的下载：

    const json = JSON.stringify(data);
    const blob = new Blob([json], {type: 'application/json'});
    const url = URL.createObjectURL(blob);

    const a = document.getElementById('export');
    a.download = 'export.json';
    a.href = url;

Answer 1

相同的完整博文：Download File in Angular Js2 Application

你的代码中缺少这两行：

var url= window.URL.createObjectURL(b);//add this line 
window.open(url);//add this line for download

我建议尝试这样：

  constructor(private http:Http)
  {}

  DownloadFile():void
  {
    this.getFile("http://localhost:1800/api/demo/GetTestFile")
    .subscribe(fileData => 
      {
      let b:any = new Blob([fileData], { type: 'application/zip' });
      var url= window.URL.createObjectURL(b);//add this line 
        window.open(url);//add this line for download 
      }
    );
  }

  public getFile(path: string):Observable<any>{
    let options = new RequestOptions({responseType: ResponseContentType.Blob});
    return this.http.get(path, options)
        .map((response: Response) => <Blob>response.blob())  ;
  }

我的类似答案：Angular JS empty pdf in new window

强制下载窗口打开文件下载

1 个答案: