如何发送"Cookie"在Angular2中所有请求的请求标头中? | 在Angular2中所有请求的请求标头中

本文介绍了如何发送"Cookie"在Angular2中所有请求的请求标头中?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

实际上，我们的后端使用请求标头中的Cookie对请求进行身份验证.我知道如果设置标题"Cookie"，它将拒绝.那么，有没有办法将Cookie发送到后端?

Actually , our backend authenticate the request using Cookie in the request header. I know that it will refuse if I set a header "Cookie". So , is there a way to send a Cookie to the back end ?

推荐答案

我猜您有一个阶段要求服务器对您进行身份验证.此后(如果身份验证成功)，服务器将在响应中返回一个cookie.浏览器将存储此cookie并针对每次调用再次发送.

I guess that there is a phase where you ask the server to authenticate you. Following this (and if the authentication is successful), the server will return a cookie in the response. The browser will store this cookie and send it again for each call.

也就是说，对于跨域请求(CORS)，您需要将XHR的withCredentials设置为true，以使浏览器在您的请求中添加cookie.

That said, in the case of cross domain requests (CORS), you need to set the withCredentials of XHR to true to make the browser add cookies in your requests.

要在Angular2中启用此功能，我们需要扩展BrowserXhr类，如下所述:

To enable this with Angular2, we need to extend the BrowserXhr class as described below:

@Injectable()
export class CustomBrowserXhr extends BrowserXhr {
  constructor() {}
  build(): any {
    let xhr = super.build();
    xhr.withCredentials = true;
    return <any>(xhr);
  }
}

，并使用扩展名覆盖BrowserXhr提供程序:

and override the BrowserXhr provider with the extended:

bootstrap(AppComponent, [
  HTTP_PROVIDERS,
  provide(BrowserXhr, { useClass: CustomBrowserXhr })
]);

有关更多详细信息，请参见以下问题:

See this questions for more details:

设置Cookie作为响应未为Angular2发布请求设置
xmlhttprequest和set-cookie& Cookie

Set-cookie in response not set for Angular2 post request
xmlhttprequest and set-cookie & cookie

编辑(遵循 freaker 的评论)

Edit (following the freaker's comment)

在RC2中，您可以直接在请求配置中使用withCredentials属性，如下所述:

From RC2, you can use the withCredentials property directly within the request configuration as described below:

this.http.get('http://...', { withCredentials: true })

编辑(在[maxou]条注释之后)

记住要包括withCredentials:对每次请求都为true.

Remember to include withCredentials: true on every request.

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