javascript cors-anywhere.herokuapp.com 不工作 (503)。我还能尝试什么？
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cors-anywhere.herokuapp.com not working (503). What else can I try?
提问by user2094257
I am trying to send a get request to the Wikipedia API. I am sending the request form a angular frontend so i'm trying to use the Heroku CORS Anywhere endpoint to avoid CORS issues. For some reason, I'm still getting a 503 response saying no access-control-allow-origin header is present on the requested resource. Any idea why this would happen/what else I can try?
我正在尝试向维基百科 API 发送获取请求。我正在从角度前端发送请求，因此我尝试使用 Heroku CORS Anywhere 端点来避免 CORS 问题。出于某种原因，我仍然收到 503 响应，说请求的资源上不存在 access-control-allow-origin 标头。知道为什么会发生这种情况/我还能尝试什么吗？
My code:
我的代码：
import { Injectable } from '@angular/core';
import { Http, Response, } from '@angular/http';
import { Observable } from 'rxjs/Rx';
@Injectable()
export class RestService {
API_URL: string = 'https://cors-anywhere.herokuapp.com/https://en.wikipedia.org/wiki/';
constructor(private http: Http) { }
public getRandomArticle() : Observable<any> {
return this.http.get(`${this.API_URL}Special:Random`)
.map((res: Response) => res.json())
.catch((err: any) => Observable.throw(err || 'server error'));
}
}
回答by sideshowbarker
You can deploy a CORS Anywhereserver to Heroku in literally just 2-3 minutes, with 5 commands:
您可以使用 5 个命令在 2-3 分钟内将CORS Anywhere服务器部署到 Heroku：
git clone https://github.com/Rob--W/cors-anywhere.git
cd cors-anywhere/
npm install
heroku create
git push heroku master
After running those commands, you'll end up with your own CORS Anywhereproxy running at, e.g., https://cryptic-headland-94862.herokuapp.com/. So then instead of prefixing your request URL with https://cors-anywhere.herokuapp.com, prefix it instead with your own proxy's URL.
运行这些命令后，您最终将拥有自己的CORS Anywhere代理，例如在https://cryptic-headland-94862.herokuapp.com/ 上运行。因此，不要在您的请求 URL 前面加上https://cors-anywhere.herokuapp.com前缀，而是在它前面加上您自己的代理 URL。
