Question

TL，DR; HTTP请求/响应标头（下面粘贴）中是否有任何内容阻止浏览器打开保存对话框？

我希望浏览器在从App Engine收到JSON HTTP响应时提示用户'另存为'。

客户：Angular 6使用HttpClient
服务器：App Engine(Go) Standard
方法：HTTP POST

使用案例

网络应用程序用户点击按钮下载当前在Angular组件中呈现的JSON。
HTTP POST使用JSON在正文中发出请求。
Golang App Engine接收HTTP请求，并使用相同的JSON进行响应。
HTTP响应应触发浏览器提示用户另存为...

请求标题

:authority: my-app.appspot.com
:method: POST
:path: /download
:scheme: https
accept: application/json, text/plain, */*
accept-encoding: gzip, deflate, br
accept-language: en-US,en;q=0.9
cache-control: no-cache
content-length: 2030
content-type: application/json
origin: https://my-app.appspot.com
pragma: no-cache
referer: https://my-app.appspot.com/
user-agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.181 Safari/537.36

响应标题

access-control-expose-headers: Content-Disposition
cache-control: private
content-disposition: attachment;filename=export.json
content-encoding: gzip
content-length: 466
content-type: application/json
date: Thu, 07 Jun 2018 20:42:14 GMT
server: Google Frontend
status: 200
vary: Accept-Encoding

Angular Service发起请求：

@Injectable({
  providedIn: 'root'
})
export class DownloadService {

  constructor(private readonly http: HttpClient) {}

  public download(request: DownloadRequest): Observable<DownloadResponse> {
    const url: string = 'https://my-app.appspot.com/download';
    const httpOptions = {
      headers: new HttpHeaders({
        'Content-Type': 'application/json'
      }),
      options: {
        responseType: ResponseContentType.Json
      }
    };

    return this.http.post<DownloadResponse>(url, request, httpOptions);
  }
}

没有错误，但浏览器不提示用户下载。

的everythin

提示浏览器从App Engine保存JSON HTTP响应？

0 个答案: