Angular2获取请求工作正常，但发布请求给我错误

Question

Angular2获取请求正常但发布请求给我错误。这是我的请求

url = environment.API + "products/";
    headers = new Headers({ 'Content-Type': 'application/json' });
    options = new RequestOptions({ headers: this.headers });
    constructor(private http:Http) { 
    }
     getProductsList(data): Promise<any> {
        return this.http.post(this.url+'getproductsbyfilters', JSON.stringify(data), this.options).toPromise()
               .then(this.extractData)
                   .catch(this.handleErrorPromise);
    }