角2 HTTP POST错误

本文介绍了角2 HTTP POST错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 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=\"developers.facebook/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： graph.facebook/ }

{"_body":"","status":404,"statusText":"Ok","headers":{"Client-Via", ["shouldInterceptRequest"]},"type":2,"url":"graph.facebook/"}

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('graph.facebook', 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（ HTTPS ：//en.wikipedia/wiki/HTTP_404 ）

A 404 Error = Not Found (en.wikipedia/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 graph.facebook 得到一个404错误。

Indeed - if I manually try to navigate to graph.facebook 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.