如何在Angular 2中取消HTTPRequest? [英] How to cancel a HTTPRequest in Angular 2?
本文介绍了如何在Angular 2中取消HTTPRequest?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何在Angular 2中取消HTTPRequest?
How to cancel a HTTPRequest in Angular 2?
我知道如何拒绝请求承诺。
I know how to reject the request promise only.
return new Promise((resolve, reject) => {
this.currentLoading.set(url, {resolve, reject});
this.http.get(url, {headers: reqHeaders})
.subscribe(
(res) => {
res = res.json();
this.currentLoading.delete(url);
this.cache.set(url, res);
resolve(res);
}
);
});
推荐答案
您可以致电取消订阅
let sub = this.http.get(url, {headers: reqHeaders})
.subscribe(
(res) => {
res = res.json();
this.currentLoading.delete(url);
this.cache.set(url, res);
resolve(res);
}
);
sub.unsubscribe();
此处有更多信息: http://www.syntaxsuccess.com/viewarticle/angular-2.0-and-http
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