Angular2-No 'Access-Control-Allow-Origin' header is present on the requested resource

Question

I am trying to read Json Object from mongodb by doing http call from anhular2 using http provider.

but I am getting the below error in my browser

XMLHttpRequest cannot load http://localhost:3200/pm/workspaces/.
No 'Access-Control-Allow-Origin' header is present on the requested resource.

I tried Below Method i.e. starting chrome by disabling the security restrictions too,but no use:

chrome.exe --disable-web-security

below is my code:

import { Injectable } from 'angular2/core';
import { Http, Response } from 'angular2/http';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/catch';
import {Observable} from 'rxjs/Observable';

@Injectable()
export class WorkspaceService {
    constructor(private http: Http) { }    
    getAllWorkspaces(baseUrl:string) {
         return this.http.get(baseUrl+'/pm/workspaces/')
                    .map((res: Response) => res.json()).catch(this.handleError);
    }
    handleError(error: any) {
        console.error(error);
        return Observable.throw(error.json().error || 'Server error');
    }
}

Any Suggestions? Thanks in advance.