POST

// Service.ts
saveItinerary(url: string, params: any): Observable<any> {
    let convert: string[] = [];
    Object.keys(params).forEach((key: string) => {
        convert.push(key + '=' + params[key]);
    });
    let body: string = convert.join('&');

    // application/json 은 제대로 된 데이터를 넘기지 못함
    let headers = new Headers({ 'Content-Type': 'application/x-www-form-urlencoded' });
    let options = new RequestOptions({ headers: headers });
    return this.http.post(url, body, options).map();