前端解決瀏覽器下載文件名稱問題

// 下載doc url
let href = “base64編碼”
let fileName = "文件名.doc
// 下載 doc
this.http.get(href, {
  observe: 'response',
  responseType: 'blob',
}).subscribe(res:Blob => {
// 返回的數據流為Blob
  const file = decodeURIComponent(fileName);
  this._FileSaverService.save(res.body, file);
  this.isDownload = false;
}, err => {
  this.isDownload = false;
  this.message.create('error', '下載失敗！');
});