在Angular 2中读取自定义HTTP响应标头 [英] Reading Custom HTTP response headers in Angular 2

问题描述

在我的angular 2应用程序中，我向服务(HTTPS)发出了HTTP POST请求，服务返回了HTTP响应有一个自定义RESPONSE标头"X-COUNT"，但是在下面的代码中，console.log不会打印有关自定义标头"X-COUNT"的信息，但它会打印有关其他标题的信息.

In my angular 2 application , I am making a HTTP POST request to a service(HTTPS) , the HTTP response returned by service has a custom RESPONSE header "X-COUNT", but in below code the console.log does not print info about custom header "X-COUNT" , but it does print info about other headers.

this._http.post(restUri, postdata, options)
            .map(itemsResult =>
            { 
                console.log(JSON.stringify(itemsResult.headers));
                return items;
        }).catch((err) => {

            return Observable.of([]);

        }); 

任何想法为什么我无法获得自定义标题信息.

Any idea why I am not able to get custom header info.

推荐答案

由于不允许从客户端访问所有标头，因此需要从服务器端公开"X-COUNT"标头."access-control-expose-header"用于该目的.

Since not all headers are allowed to be accessed from client side, You need to expose the "X-COUNT" header from the server side. "access-control-expose-headers" is used for that purpose.

希望这会有所帮助.

这篇关于在Angular 2中读取自定义HTTP响应标头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！