如何为angular2 + http请求实现超时 [英] How can I implement timeout for angular2+ http request

问题描述

这里只是常规请求，如下所示:

Here is just regular request looking like that:

this.people = http.get('http://localhost:3000/users')
                  .map(response => response.json());

有什么办法可以延迟/超时吗?

Is there any way to delay/timeout that?

推荐答案

您可以利用timeout观测值运算符，如下所述:

You can leverage the timeout operator of observables, as described below:

return this.http.get('http://api.geonames.org/postalCodeSearchJSON',
          { search: params })
    .retryWhen(error => error.delay(500))
    .timeout(2000, new Error('delay exceeded')) // <------
    .map(res => res.json().postalCodes);

有关更多详细信息，请参见本文(带有重试支持"部分):

See this article for more details (with the section "Retry support"):

• http://restlet.com/blog/2016/04/18/interacting-ficiently-with-a-restful-service-with-angular2-and-rxjs-part-3/

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