javascript 从 ngInit 在 AngularJS 中全局设置自定义 HTTP 标头
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Globally set custom HTTP header in AngularJS from ngInit
提问by PhoenixS
I am unable to set custom HTTP header taken from ngInitin AngularJS.
我无法设置从ngInitAngularJS 中获取的自定义 HTTP 标头。
I set variable using ngInit in html:
我在 html 中使用 ngInit 设置变量：
<div ng-init="myApiKey='valueOfVar'"></div>
Now I want to use this variable in all HTTP requests. I tried to set it in app.config and in controller too.
现在我想在所有 HTTP 请求中使用这个变量。我也尝试在 app.config 和控制器中设置它。
If I set it immediately, variable is undefined.
If I set it in
$scope.$watchcallback function, variable is defined, but HTTP requests are without that header.
如果我立即设置它，变量是未定义的。
如果我在
$scope.$watch回调函数中设置它，则定义了变量，但 HTTP 请求没有该标头。
I set header with:
我设置标题：
$http.defaults.headers.common.Authorization = 'something';
(or via $httpProvider, when in app.config) and then use it in service utilizing $resource. My code looks like [this][1]
（或通过$httpProvider，当在 app.config 中时），然后在服务中使用$resource. 我的代码看起来像 [this][1]
I tried to set it in config, in run, in controller and as a service, but nothing worked for me yet. Thank you in advance for any advice given.
我试图将它设置在config, in , in run, in controller 和作为服务，但对我来说还没有任何效果。预先感谢您提供的任何建议。
Edit:Now I have interceptor:
编辑：现在我有拦截器：
myApp.config(function ($httpProvider) {
$httpProvider.interceptors.push('httpRequestInterceptor');
});
myApp.factory('httpRequestInterceptor', ['$rootScope', function($rootScope) {
return {
request: function($config) {
$config.headers['Authorization'] = 'Basic ' + $rootScope.apiKey;
return $config;
}
};
}]);
But $rootscope.apiKey(which is set in main controller) is undefinedat first call. After that, it's okay (and set).
但是$rootscope.apiKey（在主控制器中设置）是undefined第一次调用。之后，就可以了（并设置）。
回答by Karim Oukara
the following code will allow you to intercept all http requestes of your application and to add a property 'language' in the header of the request
以下代码将允许您拦截应用程序的所有 http 请求，并在请求的标头中添加属性“语言”
angular.module('app', ['ngRoute', 'ngResource']).run(function($http) {
$http.defaults.headers.common.language='fr-FR';
});
we can add many properties in the http header
我们可以在 http 标头中添加许多属性
回答by Fals
If you wanna modify request/response in AngularJS you should do a deeply read about Interceptor:
如果你想在 AngularJS 中修改请求/响应，你应该深入阅读Interceptor：
- Angular JS Web Site: $http
- Angular JS 网站：$http
You can call $http(config), where config is a object with every configuration. There's a configuration there for headers, where you should put your code:
您可以调用 $http(config)，其中 config 是每个配置的对象。那里有一个配置headers，你应该把你的代码放在那里：
headers – {Object} – Map of strings or functions which return strings representing HTTP headers to send to the server. If the return value of a function is null, the header will not be sent.
headers – {Object} – 返回表示要发送到服务器的 HTTP 标头的字符串的字符串或函数的映射。如果函数的返回值为空，则不会发送标头。
If you google about Interceptor, you will get a full list of blogs explaining how to use It, and providing example codes, here's one that help me out sometime ago:
如果你在谷歌上搜索 Interceptor，你会得到一个完整的博客列表，解释如何使用它，并提供示例代码，这是前一段时间帮助我的一个：
回答by PhoenixS
OK, so for anybody trying to do the same - Interceptorswere the key (thank you Falsa lot), but problem was with the $rootScope. As I wrote in question, when Interceptor was called the first time, $rootScope.apiKeywasn't set yet (on consecutive requests, it was already set).
好的，所以对于任何试图做同样事情的人 -拦截器是关键（非常感谢Fals），但问题出在$rootScope. 正如我所写的那样，当第一次调用 Interceptor 时，$rootScope.apiKey还没有设置（在连续请求中，它已经设置了）。
Right way (or The working way) was to pass variable to AngularJS not through ngInit, but through $window. So I added to my HTML code:
正确的方法（或工作方法）是将变量传递给 AngularJS ngInit，而不是通过，而是通过$window。所以我添加到我的 HTML 代码中：
<script>window.apiKey = 'myValue';</script>
and then pass it to Interceptor exactly the same way as $rootScope- You can literally just replace all occurences of $rootScopein edit of my question with $windowand now it's working - even for the first request!
然后以完全相同的方式将其传递给拦截器$rootScope- 您实际上可以将$rootScope我的问题编辑中的所有出现替换为$window现在它正在工作 - 即使是第一个请求！
Thank you Fals once again.
再次感谢法尔斯。
