Basic angular 2 Authentifizierung

Question

Ich rufe eine einfache get Anfrage über localhost.Ich weiß nicht, was falsch mit dem Code.Ich habe es so viel Zeit überprüft.Es hat keinen Fehler gefunden.Someone überprüfen Sie meinen Code sagen, was ich vermisse ich.

import { Injectable } from '@angular/core'; 
import { Http, Response,Headers,RequestOptions } from '@angular/http'; 

import { Observable } from 'rxjs/Observable'; 
import 'rxjs/add/operator/do'; 
import 'rxjs/add/operator/catch'; 
import 'rxjs/add/operator/map'; 
import 'rxjs/add/observable/throw'; 

import { IProduct } from './product'; 

@Injectable() 
export class ProductService { 
    //private _productUrl = 'api/products/products.json'; 
    //private _productUrl = 'http://localhost:8092/openmrs-standalone/ws/rest/v1/concept'; 
    private _productUrl = 'http://localhost:8092/openmrs-standalone/ws/rest/v1/session'; 

    constructor(private _http: Http) { } 

    getProducts(): Observable<any> { 

     let username: string = 'admin'; 
     let password: string = 'Admin123'; 
     let headers: Headers = new Headers(); 
     headers.append("authorization", "Basic " + btoa(username + ":" + password)); 
     headers.append("Content-Type", "application/json"); 
     let options = new RequestOptions({ headers: headers, withCredentials: true }); 

     return this._http.get(this._productUrl,options) 

      .map((response: Response) => <IProduct[]> response.json()) 
      .do(data => console.log('All: ' + JSON.stringify(data))) 
      .catch(this.handleError); 

    } 
    private handleError(error: Response) { 
     // in a real world app, we may send the server to some remote logging infrastructure 
     // instead of just logging it to the console 
     console.error(error); 
     return Observable.throw(error.json().error || 'Server error'); 
    } 
} 

Answer 1

Sie können versuchen, mit diesem

private _productUrl = 'http://localhost:8092/openmrs-standalone/ws/rest/v1/session'; 

getProducts(): Observable<any> { 
    let username: string = 'admin'; 
    let password: string = 'Admin123'; 
    let headerOptions = { 
     'Accept': `application/json`, 
     'Access-Control-Allow-Credentials': 'true', 
     'Authorization': 'Basic ' + btoa(username + ":" + password) 
    }; 
    let headers = new Headers(headerOptions); 
    return new RequestOptions({ headers: headers }); 
}