Parsing a JSON object

My server takes 2 parameter username and password to a page login.php and returns the JSON object if the user is authenticated “{ authenticated : true }”, how do I send the get request and how do get the parsed JSON oject…
Please Help…

Were you able to resolve the issue ? If yes , please share the code

Could you do this:

Send request

public getStationData(): Promise<Object> {
   return this.http.get("http://some.url").toPromise()
      .then(this.extractJSONData)
      .catch(this.handleError);
}

Convert response to JSON

private extractJSONData(res: Response) {
    console.log("extractJSONData");
    let data: any[];
    try {
      data = JSON.parse(res.text());
    }
    catch (err) {
      console.error("extractJSONData: " + err);
    }
    return data;
  }

Error Handler

 private handleError(error: any) {
    console.log("handleError");
    let errMsg = "";
    if (error != null) {
      errMsg = (error.message) ? error.message :
        error.status ? `${error.status} - ${error.statusText}` : 'Server error';
    }
    else {
      errMsg = "Unknown error";
    }
    console.error("handleError: " + errMsg);
    return Observable.throw("handleError: " + errMsg);
  }