获取自己的标头$ Resource AngularJs [英] Get own headers $Resource AngularJs

问题描述

我有一个使用GO语言的REST API和一个在Angularjs中使用的前端，但是当我用angular获取资源时，我的自定义标头就不存在了.

I have a REST API in GO language and the front-end in Angularjs , but when I get my resource in angular my custom header don't exist.

控制器:

  Persons.query(
    function (data, headerGetter, status) {

      var headers = headerGetter();

      console.log(headers["X-Total-Count"]); //PRINT: undefined
      console.log(headers) //PRINT: {Content-Type:application/json;charset=utf-8}
      console.log(data); //PRINT: [{name:'mr x', age:'67'}, ....]

    },
    function (error) {
      console.error(error);
    });

型号:

myApp.factory("Persons", function ($resource) {
  return $resource(api_url+"/persons");
});

响应Chrome或Firefox，任何客户端:

Response Chrome or Firefox, any client:

Access-Control-Allow-Methods:GET
Access-Control-Allow-Origin:*
Content-Length:1839
Content-Type:application/json; charset=utf-8
Date:Thu, 12 Mar 2015 21:53:54 GMT
X-Total-Count:150

推荐答案

您正在从与您的 API 所在的域不同的域发出请求，该操作称为跨站点HTTP请求(CORS)

You're making a request from a different domain than the one where your API is located, operation which is called Cross-site HTTP requests ( CORS )

要使用自定义标头，您需要设置另一个名为 Access-Control-Expose-Headers

In order to use custom headers you need to set another one called Access-Control-Expose-Headers

如果希望客户端能够访问其他标头，则必须使用Access-Control-Expose-Headers标头.此标头的值是您要公开的响应标头的逗号分隔列表客户.

If you want clients to be able to access other headers, you have to use the Access-Control-Expose-Headers header. The value of this header is a comma-delimited list of response headers you want to expose to the client.

此标头使服务器白名单标头允许浏览器访问.例如:

This header lets a server whitelist headers that browsers are allowed to access. For example:

Access-Control-Expose-Headers: X-My-Custom-Header,X-Another-Custom-Header 

这允许使用X-My-Custom-Header和将向浏览器公开的X-Another-Custom-Header标头.

This allows the X-My-Custom-Header and X-Another-Custom-Header headers to be exposed to the browser.

---

在 .NET 中的操作方式(我想在 Go 中有点类似):

---

The way I do it in .NET ( I suppose it's kinda similar in Go):

HttpContext.Current.Response.AppendHeader("Access-Control-Expose-Headers", "X-Total-Pages, X-Records");
HttpContext.Current.Response.AppendHeader("X-Total-Pages", pages.ToString());
HttpContext.Current.Response.AppendHeader("X-Records", records.ToString());

在 AngularJS 中，我得到这样的标题:

And in AngularJS I'm getting headers like this :

var headers = headers();
headers['x-total-pages']

这篇关于获取自己的标头$ Resource AngularJs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！