如何在每个标题中添加json Web令牌？

因此,我正在尝试使用 JSON Web令牌进行身份验证,并且正在努力弄清楚如何将它们附加到标头并根据请求发送它们.

我试图使用https://github.com/auth0/angular2-jwt,但我无法使用Angular并放弃,并认为我可以弄清楚如何在每个请求中发送JWT或在头部(最好是标头)中发送它.它比我想象的要困难一点.

这是我的登录

submitLogin(username,password){
        console.log(username);
        console.log(password);
        let body = {username,password};
        this._loginService.authenticate(body).subscribe(
            response => {
                console.log(response);
                localStorage.setItem('jwt',response);
                this.router.navigate(['UserList']);
            }
        );

    }

和我的login.service

authenticate(form_body){
        return this.http.post('/login',JSON.stringify(form_body),{headers: headers})
                .map((response => response.json()));
    }

我知道这些并不是真的需要,但也许它会有所帮助！一旦这个令牌被创建并存储它,我想做两件事,在标题中发送它并提取我用它放入的过期日期.

一些Node.js登录代码

var jwt = require('jsonwebtoken');
function createtoken(user) {
  return jwt.sign(user,"SUPER-SECRET",{ expiresIn: 60*5 });
}

现在我只是尝试通过角度服务将其传递回使用此服务的节点.

getUsers(jwt){
        headers.append('Authorization',jwt);
        return this.http.get('/api/users/',{headers: headers})
            .map((response => response.json().data));
    }

JWT是我在本地存储中的webtoken,我通过我的组件传递给服务.

我在任何地方都没有错误,但当它到达我的节点服务器时,我从未在标题中收到它.

'content-type': 'application/json',accept: '*/*',referer: 'http://localhost:3000/','accept-encoding': 'gzip,deflate,sdch','accept-language': 'en-US,en;q=0.8',cookie: 'connect.sid=s%3Alh2I8i7DIugrasdfatcPEEybzK8ZJla92IUvt.aTUQ9U17MBLLfZlEET9E1gXySRQYvjOE157DZuAC15I','if-none-match': 'W/"38b-jS9aafagadfasdhnN17vamSnTYDT6TvQ"' }

解决方法

创建自定义http类并覆盖请求方法以在每个http请求中添加令牌.

http.service.ts

import {Injectable} from '@angular/core';
import {Http,XHRBackend,RequestOptions,Request,RequestOptionsArgs,Response,Headers} from '@angular/http';
import {Observable} from 'rxjs/Observable';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/catch';

@Injectable()
export class HttpService extends Http {

  constructor (backend: XHRBackend,options: RequestOptions) {
    let token = localStorage.getItem('auth_token'); // your custom token getter function here
    options.headers.set('Authorization',`Bearer ${token}`);
    super(backend,options);
  }

  request(url: string|Request,options?: RequestOptionsArgs): Observable<Response> {
    let token = localStorage.getItem('auth_token');
    if (typeof url === 'string') { // meaning we have to add the token to the options,not in url
      if (!options) {
        // let's make option object
        options = {headers: new Headers()};
      }
      options.headers.set('Authorization',`Bearer ${token}`);
    } else {
    // we have to add the token to the url object
      url.headers.set('Authorization',`Bearer ${token}`);
    }
    return super.request(url,options).catch(this.catchAuthError(this));
  }

  private catchAuthError (self: HttpService) {
    // we have to pass HttpService's own instance here as `self`
    return (res: Response) => {
      console.log(res);
      if (res.status === 401 || res.status === 403) {
        // if not authenticated
        console.log(res);
      }
      return Observable.throw(res);
    };
  }
}

现在,我们需要配置我们的主模块,以便为我们的自定义http类提供XHRBackend.在主模块声明中,将以下内容添加到providers数组：

app.module.ts

import { HttpModule,XHRBackend } from '@angular/http';
import { HttpService } from './services/http.service';
...
@NgModule({
  imports: [..],providers: [
    {
      provide: HttpService,useFactory: (backend: XHRBackend,options: RequestOptions) => {
        return new HttpService(backend,options);
      },deps: [XHRBackend,RequestOptions]
    }
  ],bootstrap: [ AppComponent ]
})

之后,您现在可以在服务中使用自定义http提供程序.例如：

user.service.ts

import { Injectable }     from '@angular/core';
import {HttpService} from './http.service';

@Injectable()
class UserService {
  constructor (private http: HttpService) {}

  // token will added automatically to get request header
  getUser (id: number) {
    return this.http.get(`/users/${id}`).map((res) => {
      return res.json();
    } );
  }
}

Source