在Angular2拦截 [英] Interceptors in Angular2

问题描述

我想建立一个演示应用程序的 Angular2.beta.0 这将对登录机制，然后所有其他的API调用将不得不通过标题发出的收购会话令牌。

I am trying to build a demo app on Angular2.beta.0 which would have login mechanism and then all the other API calls would have the acquired session token sent via the headers.

在角1个，我可以写一个拦截这将令牌添加到HTTP标头在一个单独的code，我想知道，如果angular2有这样一种机制，或做任何其它的推荐方式。

In angular 1x, I could write an Interceptor which would add the token to the http header in a separate code, I would like to know if angular2 has such kind of mechanism or any other recommended way to do this.

推荐答案

必须是HTTP请求的头？饼干似乎是一个不错的选择：
的https://stormpath.com/blog/where-to-store-your-jwts-cookies-vs-html5-web-storage/

Has to be HTTP header of the requests? Cookies seems to be a good choice: https://stormpath.com/blog/where-to-store-your-jwts-cookies-vs-html5-web-storage/

通过查看 HTTP 文档，我们有：

By looking at HTTP documentation we have:

get(url: string, options?: RequestOptionsArgs) : Observable<Response>

Performs a request with get http method.

将 RequestOptionsArgs 我们有：

headers : Headers

Not Yet Documented

最后降落在头。

import {Headers} from 'angular2/http';
var secondHeaders = new Headers({
  'X-My-Custom-Header': 'Angular'
});

因此​​，它应该是这样的：

So it should be something like:

import {Response} from "angular2/http";
import {RequestOptionsArgs} from "angular2/http";
import {Headers} from "angular2/http";

let token:string = 'my-secret';
this.http.get('your/url', <RequestOptionsArgs> {
    headers: new Headers({
        'X-My-JWT-Header': 'sweet'
    })
})

看着 BaseRequestOptions 文档，这是一种方式这个头连接到自动方式每个请求。

Looking at BaseRequestOptions documentation this is a way to attach this header to each request in automatic way.

这篇关于在Angular2拦截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IT屋！