CategoryService

import { Injectable } from '@angular/core';
import { Category } from './category';
import { Http, Response, Headers, RequestOptions } from '@angular/http';
import { Observable } from 'rxjs/Observable';

@Injectable()
export class CategoryService {
    private _categoryUrl = 'http://localhost:8080/rest/category';

    constructor(private _http : Http) { }

    createNewCategory(categoryName:string,isMain:boolean,supCategory:Category){

        let body = JSON.stringify({ "name":categoryName,"mainCategory":isMain,"parentCategory":supCategory});
        console.log(body);
        let headers = new Headers({ 'Content-Type': 'application/x-www-form-urlencoded' });
        headers.append('Access-Control-Allow-Origin', '*');
        let options = new RequestOptions({ headers: headers, method: "post" });

        return this._http.post(this._categoryUrl, body,options)
    }
    private handleError (error: Response) {
        console.error(error);
        return Observable.throw(error.json().error || ' error');
    }

    logIn() {
        let loginUrl = 'http://localhost:8080/j_spring_security_check';
        let headers = new Headers({ 'Content-Type': 'application/x-www-form-urlencoded' });
        let body = 'j_username=admin&j_password=admin';
        return this._http.post(loginUrl, body, { headers: headers });
    }


    getAllCategories(): Observable<Category[]> {
        let headers = new Headers({ 'Content-Type': 'application/x-www-form-urlencoded' });
        headers.append("Accept",'application/json');
        headers.append('Access-Control-Allow-Origin', '*');
        return this._http.get(this._categoryUrl,{headers:headers})
            .map((response:Response) => <Category[]>response.json())
            /*.do(data => console.log("All: " + JSON.stringify(data)))
            .catch(this.handleError);*/

    }

}