授权标记在Angular的响应中作为空发送 [英] Authorization Token getting sent as null in the Response in Angular

问题描述

我正在尝试使用我的企业应用程序和Angular中提供的REST API.我想要实现的是从企业应用程序中获取一些数据.为此，我必须做两件事:

I am trying to work with REST API's provided within my Enterprise Application and Angular. What I am trying to achieve is to fetch some data from my Enterprise Application. For this I have to do two things:

1-通过Angular登录到我的企业应用程序.为此，企业应用程序已经提供了自定义身份验证REST API.我正在消费相同.生成一个身份验证令牌，我将其保存在localStorage中.

1- Login to my Enterprise Application via Angular. For doing so, there's already a custom authentication REST API provided by the Enterprise Application. I am consuming the same. An authentication token is generated which I am saving within localStorage.

2-发生身份验证后，向企业应用程序发送GET请求以获取数据.这是我面临的问题.我无法在GET请求中传递身份验证令牌.在"Chrome开发者工具"的应用程序"选项卡下进行检查时，我可以在请求标头"部分下看到授权值为空.下面是相同的屏幕截图:

2- Send a GET request to the Enterprise Application to fetch data after Authentication happened. This is where I am facing issues. I am unable to pass the authentication token within the GET Request. On Checking the same under "Application" Tab of Chrome Dev Tools, I Could see under "Request Headers" Section that Authorization value is null. Below is the screenshot of the same:

下面是我开发的代码:

1-身份验证服务(auth.service.ts)

1 - Authentication Service (auth.service.ts)

     import { Injectable } from '@angular/core';
     import { HttpClient, HttpHeaders } from '@angular/common/http';
     import{Http} from '@angular/http'
     import { Observable } from 'rxjs';
     import { map } from 'rxjs/operators';
     import { URLSearchParams,Response } from '@angular/http'

     @Injectable()
     export class AuthenticationService {
     constructor(private http: Http) { }
     username:string = 'Admin';
     password:string='livelink';  
     token:any; 
     login() 
     {

    let urlSearchParams = new URLSearchParams();
    urlSearchParams.append('Username', this.username);
    urlSearchParams.append('Password', this.password);
     this.http.post('http://localhost/otcs/cs.exe/api/v1/auth',urlSearchParams)
        .subscribe((res:Response) => 
        {
            // login successful if there's a jwt token in the response
            if (res) {
                const data = res.json();
                ;
                this.token = data;
                console.log(data);
                // store username and jwt token in local storage to keep user logged in between page refreshes
                localStorage.setItem('currentUser', JSON.stringify({  ticket: data }));

            }
        });

        console.log("INSIDE LOGIN this.token  = "+this.token)//done for debugging, returning undefined
}

public getToken()
 {

    console.log("GET TOKEN VALUE "+ localStorage.getItem('ticket'))//done for debugging, returning undefined
    return localStorage.getItem('ticket');
     }

  }

2-令牌拦截器(token.interceptor.ts)

2 - Token Interceptor (token.interceptor.ts)

     import { Injectable } from '@angular/core';
     import {
     HttpRequest,
     HttpHandler,
     HttpEvent,
     HttpInterceptor
     } from '@angular/common/http';
     import { AuthenticationService } from './auth.service';
     import { Observable } from 'rxjs';
     import { Http } from '@angular/http';

     @Injectable()
     export class TokenInterceptor implements HttpInterceptor {
     constructor(public auth: AuthenticationService) {}
     intercept(request: HttpRequest<any>, next: HttpHandler): 
     Observable<HttpEvent<any>> {

     request = request.clone({
     setHeaders: {
     Authorization: `Bearer ${this.auth.getToken()}`
     }
   });

        return next.handle(request);
     }
   }

3-应用组件(app.component.ts)

3 - App Component (app.component.ts)

 import { Component } from '@angular/core';
 import { AuthenticationService } from './auth.service';
 import{Http} from '@angular/http'
 import { HttpClient } from '@angular/common/http'
 @Component({
 selector: 'app-root',
 templateUrl: './app.component.html',
 styleUrls: ['./app.component.css']
 })
  export class AppComponent 
  {

 constructor(private authenticationService: AuthenticationService, private 
 http:HttpClient)
   {
      this.authenticationService.login();
      this.ping() ;

    }

     public ping() {
    this.http.get('http://localhost/otcs/cs.exe/api/v1/nodes/16236/output')
     .subscribe(
  data => console.log(data),
  err => console.log(err)
        );
      }
    }

4-应用程序模块(app.module.ts)

4- App Module (app.module.ts)

     import { BrowserModule } from '@angular/platform-browser';
     import { NgModule } from '@angular/core';
     import { HttpClientModule, HTTP_INTERCEPTORS } from 
     '@angular/common/http';
     import { AppComponent } from './app.component';
     import { AuthenticationService } from './auth.service';
     import { HttpModule } from '@angular/http';
     import { TokenInterceptor } from './token.interceptor';

     @NgModule({
     declarations:[AppComponent],
     imports: [
            BrowserModule,
            HttpClientModule,
            HttpModule
           ],

    providers: [AuthenticationService,
   {
      provide: HTTP_INTERCEPTORS,
      useClass: TokenInterceptor,
       multi: true
}],
        bootstrap: [AppComponent]
     })
        export class AppModule { }

在运行上述项目时，以下是控制台中显示的输出:

On running the above project, below is the output displayed in Console:

我无法理解为什么我的令牌没有随GET请求一起传递.

I am unable to understand as to why is my token not getting passed with the GET Request.

推荐答案

您正在使用此行保存令牌

You are saving the token using this line

localStorage.setItem('currentUser', JSON.stringify({  ticket: data }));

但是，您的函数 getToken()从 localStorage 弄错了.我认为您的函数应如下所示:

But, your function getToken() is getting it wrong from localStorage. I think your function should look like:

public getToken() {
    const currentUser = JSON.parse(localStorage.getItem('currentUser') || '{}');
    console.log("GET TOKEN VALUE ", currentUser.ticket))//done for debugging
    return currentUser.ticket;
}

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