Angular2 http.request无法添加页眉 [英] Angular2 http.request not able to add headers
问题描述
我在Angular2打字稿这个code,其中我尝试添加页眉像下面这样。
I have this code in Angular2 TypeScript where I am trying to add headers like the following.
['access-token', localStorage.getItem( 'token' )],
['client', localStorage.getItem( 'client' )],
['uid', localStorage.getItem( 'email' )],
['withCredentials', 'true'],
['Accept', 'application/json'],
['Content-Type', 'application/json' ]
发送请求我看不到头在我的要求。
我工作的一个跨域设置。有一些其他的方式来做到这一点?
While sending the request I can't see the headers in my request. I am working on a cross domain setup. Is there some other way to do it?
private _request(url: string | Request, options?: RequestOptionsArgs) : Observable<Response> {
let request:any;
let reqOpts = options || {};
let index:any;
if(!reqOpts.headers) {
reqOpts.headers = new Headers();
}
for( index in this._config.authHeaders ) {
reqOpts.headers.set( this._config.authHeaders[index][0], this._config.authHeaders[index][1] );
}
request = this.http.request(url, reqOpts);
return request;
}
推荐答案
如果您的请求是跨域之一,所以CORS的概念也适用。你可以看看这个链接了解详情: HTTP: //restlet.com/blog/2015/12/15/understanding-and-using-cors/ 。当然,作为冈特说,有些事做在服务器端返回CORS头,让你的浏览器来处理响应。
If your request is a cross domain one so CORS concepts apply. You can have a look at this link for more details: http://restlet.com/blog/2015/12/15/understanding-and-using-cors/. Sure, as Günter said, there is something to do on the server side to return the CORS headers to allow your browser to handle the response.
下面是添加页眉在HTTP请求中的示例服务:
Here is a sample service that adds headers in an HTTP request:
export class MyService {
constructor(private http:Http) {
}
createAuthorizationHeader(headers:Headers) {
headers.append('Authorization', 'Basic ' +
btoa('a20e6aca-ee83-44bc-8033-b41f3078c2b6:c199f9c8-0548-4be7-9655-7ef7d7bf9d33'));
}
getCompanies() {
var headers = new Headers();
this.createAuthorizationHeader(headers);
return this.http.get('https://angular2.apispark.net/v1/companies/', {
headers: headers
}).map(res => res.json());
}
修改
我刚才看到你尝试设置 withCredential
头。我认为你混用不同的东西。 withCredentials
不是一个标准的头,但有XHR的JavaScript对象在 withCredentials
属性。请参阅此链接:的https://developer.mozilla .ORG / EN-US /文档/网络/ API / XMLHtt prequest / withCredentials 。这应该工作而无需使用 withCredentials
自定义标题。
I just saw that you try to set the withCredential
header. I think that you mix different things. withCredentials
isn't a standard header but there is a withCredentials
property on the XHR JavaScript object. See this link: https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/withCredentials. This should work without using the withCredentials
custom header.
在此提醒您,如果您想使用自定义标题,您需要将接入控制允许标题
报头内添加服务器端。
As a reminder, if you want to use a custom header, you need to add it on the server side within the Access-Control-Allow-Headers
header.
希望它可以帮助你,
蒂埃里
Hope it helps you, Thierry
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