角2 HTTP POST错误

问题描述

我有一个离子2应用程序，将获得来自Facebook的一些事件。我试图发送POST请求的图形API包含rel=\"nofollow\">一批href=\"https://developers.facebook.com/docs/graph-api/making-multiple-requests\"一个的，但我的订阅总是返回这个错误：

I have an Ionic 2 app that will get some events from Facebook. I'm trying to send a post request to the Graph Api with a batch containing multiple requests but my subscription always return this error:

{_体：，状态：404，状态文本：OK，头：{客户通过
  [shouldInterceptRequest]}，型：2，URL：}

我的组件里面订阅：

this.eventListService.get()
  .subscribe(
    response => this.response = response,
    error => this.error = error
  )

EventListService：

EventListService:

import {Injectable} from '../../node_modules/angular2/core';
import {Http, Headers, URLSearchParams} from '../../node_modules/angular2/http';
import {Observable} from '../../node_modules/rxjs/Rx';
import {AuthenticationService} from '../user/authentication.service';

@Injectable()
export class EventListService {
  private fields: string = 'id, cover, name, start_time, place, attending_count, interested_count, rsvp_status';

  constructor(
    private http: Http,
    private authenticationService: AuthenticationService
  ) {}

  get() {
    return Observable
      .fromPromise(this.authenticationService.getAccessToken())
      .flatMap(accessToken => this.synchronize(accessToken));
  }

  synchronize(accessToken) {
    const today = new Date();
    today.setHours(0, 0, 0, 0);
    const todayTimestamp = today.getTime();

    const batch = [{...}];

    const headers = new Headers();
    headers.append('Content-Type', 'application/x-www-form-urlencoded');

    const body = new URLSearchParams();
    body.append('access_token', accessToken);
    body.append('batch', JSON.stringify(batch));

    return this.http
      .post('https://graph.facebook.com', body.toString(), { headers })
      .map(response => response.json());
  }
}

任何想法，为什么提出要求时，我得到这个错误？

Any idea why I'm getting this error when making the request?

推荐答案

一个404错误=未找到（）

A 404 Error = Not Found (https://en.wikipedia.org/wiki/HTTP_404)

所以，可能你的网址错误的任何资源，您试图访问，或者一些其他问题的连接。

So probably you have the url wrong for whatever resource you are trying to access, or else some other problem with your connection.

事实上 - 如果我尝试手动从我的浏览器我转到得到一个404错误。

Indeed - if I manually try to navigate to https://graph.facebook.com from my browser I get a 404 error.

由于这是使用https协议，它可以是一个身份验证问题了。

Since this is using an https protocol, it could be an authentication issue too.

这篇关于角2 HTTP POST错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！