Angular 2-在服务中设置超时 [英] Angular 2 - Setting Timeout in a Service

问题描述

我想在Angular 2项目的Service中创建延迟以进行测试.更具体地说，我想致电

I want to create a delay in a Service of my Angular 2 project for testing purposes. More specifically, I want the call of

this.myIatreioService.getIatreia()

要延迟1秒.我的服务如下:

to be delayed for 1 sec. My service is the following:

@Injectable()
export class IatreioService {
   private headers = new Headers();

   constructor(private http: Http) {
       let token = localStorage.getItem('token');
       if (token) {
         this.headers = new Headers({ 'Authorization': 'Bearer ' + token });
       }
   }

   getIatreia(): Observable<Iatreio[]> {
       return this.http
                  .get('http://localhost:3000/iatreia', { headers: this.headers })
                  .map(response => response.json() as Iatreio[]);
   }

} // end of Service

我尝试实现setTimeout函数，但是它不起作用:

I have tried to implement setTimeout function, but it doesn't work:

getIatreia(): Observable<Iatreio[]> {
   setTimeout(() => {   
      return this.http
                 .get('http://localhost:3000/iatreia', { headers: this.headers })
                 .map(response => response.json() as Iatreio[]);
   }, 1000);
}

我的问题有解决方案吗?如果没有，我可以将setTimeout()放在组件中还是在服务器中?预先感谢您的帮助！

Is there a solution for my problem?? If not, can I put setTimeout() either in Component or in Server?? Thank you in advance for your help!

推荐答案

您可以简单地使用 查看全文