如何在Response头Angular2中获取值 [英] How to get value in Response header Angular2

问题描述

我想在响应头（Set-Cookie）中获取会话令牌。如何才能访问Response头中的值？

i want to get session token in response header(Set-Cookie).how can i access values in Response header ?

var headers = new Headers();
            headers.append('Content-Type', 'application/json');
            console.log('url',this.loginUrl)
            this.http.post(this.loginUrl,
                JSON.stringify({ "username": value.username, "password": value.password }),
                { headers: headers })
                .map((res: Response) => 
                    res.json())
                .subscribe((res) => {
                    console.log("res", res);
                    this.loading.hide();
                    if (res.message_code == "SUCCESS") {
                        this.nav.setRoot(HomePage, {
                            username: value.username,
                        });
                    } else {
                        let alert =  Alert.create({
                            title: "Sign In Error !",
                            subTitle: 'Please Check Username or Password.',
                            buttons: ['Ok']
                        });
                        this.nav.present(alert);
                    }
                }, err => {
                    this.loading.hide();
                    console.log('error', err);

                }); 

这是我的标题回复

< a href =https://i.stack.imgur.com/6bgpY.png =noreferrer>

推荐答案

问题是您将响应映射到其json内容。可以从响应本身到达标头。所以你需要删除 map 运算符：

The problem is that you map your response to its json content. Headers can be reached from the response itself. So you need to remove the map operator:

this.http.post(this.loginUrl,
       JSON.stringify({ "username": value.username, "password": value.password }),
       { headers: headers })
        /*.map((res: Response) =>  // <--------------
                res.json())*/
       .subscribe((res) => {
         var payload = res.json();
         var headers = res.headers;

         var setCookieHeader = headers.get('Set-Cookie')
         (...)
       });

请注意CORS访问响应头。看到这个问题：

Be careful with CORS with accessing the response headers. See this question:

• angular2 / http获取201响应的位置标题

• angular2/http get location header of 201 response

这篇关于如何在Response头Angular2中获取值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！