AngularJS忽略了一些头 [英] AngularJS ignoring some headers

问题描述

我打了一下，有角，我遇到了一个小问题。

I am playing a bit with angular and i came across a little problem.

我试图设置HTTP响应自定义标题，后来读出其对角的边值。
头设置，我确信这一点，因为Chrome的调试工具确认：

I am trying to set a custom header for http response and later read its value on angular's side. The header is set and I am sure of that because chrome's debug tool confirms that:

这意味着服务器端的罚款。到现在为止还挺好。

That means server side is fine. So far so good.

的问题。下面是CoffeeScript中的code：

The problems occurs when I try to access headers via http response interceptor in angular and display them in console. Here's the code in coffeescript:

angular.module('app').factory 'httpInterceptor', function($q) ->
  (promise) ->
    success = (response) ->
      console.log response.headers()
      response
    error = (response) ->
      $q.reject(response)

    promise.then success, error

angular.module('app').config ($httpProvider) ->
  $httpProvider.responseInterceptors.push('httpInterceptor')

和我得到的输出：

我真不明白，为什么角条所有这些头。谁能解释一下？有什么办法来访问我的自定义头的价值？

I really don't understand why does angular strip all those headers. Could anyone explain it to me? Is there any way to access my custom header's value?

感谢您提前。

推荐答案

我已经找到了答案，以我自己的问题。这不是角的错。事情是我使用CORS。

I have found an answer to my own question. It's not Angular's fault. The thing is I am using CORS.

我发现这样的信息：

用户端必须筛选出比那些简单的响应头或领域名称是值之一的ASCII不区分大小写的匹配其他的响应头访问控制展露报头报头（如任何），揭露响应头在CORS API规范中定义的API之前。

User agents must filter out all response headers other than those that are a simple response header or of which the field name is an ASCII case-insensitive match for one of the values of the Access-Control-Expose-Headers headers (if any), before exposing response headers to APIs defined in CORS API specifications.

XMLHtt prequest的getResponseHeader（）方法，因此将不会公开任何头球攻门高出没有表示。

The getResponseHeader() method of XMLHttpRequest will therefore not expose any header not indicated above.

这意味着我要简单地添加一个头访问控制展露-标题：自定义标题

It means that I have to simply add a header Access-Control-Expose-Headers: custom-header.

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