Ionic 2 Http POST Methot ERROR

@kosalam2 wrote:

Hi Im going to call http post method using ionic 2.but in the response always im getting error.can any one help me.

this is my json type

{
“username”:”user”,
"password":”pass"
}

This is my code

import {Page, NavController} from 'ionic-angular';
import {Http, Headers, RequestOptions} from 'angular2/http';
import 'rxjs/Rx';
@Page({
  templateUrl: 'build/pages/home/home.html'
})
export class HomePage {
  constructor(http: Http, nav: NavController) {
    this.http = http;
    this.makePostRequest();
  }

  makePostRequest() {

    var headers = new Headers();
    headers.append('Content-Type', 'application/json');
    this.http.post('url',
      JSON.stringify({ username: 'admin', password: 'a' }),
      { headers: headers })
      .map((res: Response) => res.json())
      .subscribe((res) => console.log("res", res));

  }

}

error Log

4     236980   log      DEVICE READY FIRED AFTER, 1437, ms
5     237420   group    EXCEPTION: [object Object]
6     237426   error    EXCEPTION: [object Object]
7     237431   error    STACKTRACE:
8     237433   error
9     237435   groupEnd
10    237525   error    Uncaught #<Response>, http://192.168.1.13:8100/build/js/app.bundle.js, Line: 7834

How can i solve this.?

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