如何在 Angular 2 中取消 HTTPRequest

发布于04月08日

如何在Angular 2中取消HTTPRequest？

我只知道如何拒绝promise 的请求.

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

你可以打unsubscribe

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();

更多信息请点击这里:http://www.syntaxsuccess.com/viewarticle/angular-2.0-and-http