javascript 在 Angular 和 IE8 中使用 $http 请求拒绝访问
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Access Denied with $http request in Angular and IE8
提问by cyberwombat
I am trying to get my angular app to do an $http.get request. Works everywhere but IE8. I am using latest Angular (1.0.6 I think). The only message IE gives is:TypeError:
我正在尝试让我的 angular 应用程序执行 $http.get 请求。适用于除 IE8 以外的任何地方。我正在使用最新的 Angular（我认为是 1.0.6）。IE 给出的唯一消息是：TypeError：
Access is denied. undefined (in previous angular this was )
访问被拒绝。未定义（在以前的角度这是 ）
My host (nodejs)is set to send cors headers:
我的主机（nodejs）设置为发送 cors 标头：
res.header('Access-Control-Allow-Origin', '*'); //config.allowedDomains
res.header('Access-Control-Allow-Credentials', true);
res.header('Access-Control-Allow-Headers', 'X-Requested-With, Content-Type, X-Requested-By');
res.header('Access-Control-Allow-Methods', 'PUT, GET, POST, DELETE, OPTIONS');
I have tried to get more info about the error using debug tools but:
我尝试使用调试工具获取有关错误的更多信息，但是：
Fiddler: doesn't show xmlhttprequests - seems you can hack your NET app to fix that but not sure what to do with my web page. DebugBar: doesn't show these requests either FirebugLite: 2 version I tried are broken - just random errors and doesn't load
Fiddler：不显示 xmlhttprequests - 似乎你可以破解你的 NET 应用程序来解决这个问题，但不确定如何处理我的网页。DebugBar: 不显示这些请求 FirebugLite: 2 版本我试过坏了 - 只是随机错误，不加载
Changing the hosts to same origin clears the issue so I assume it's trying something but man it's hard to debug.
将主机更改为同源可以清除问题，所以我认为它正在尝试某些东西，但是很难调试。
Angular posts on this seem outdated and I am not sure what to do from here.
关于这个的 Angular 帖子似乎已经过时，我不知道从这里开始做什么。
回答by Alan
This has nothing to do with $http. $http lets you make XHR(XDR) or JSONP requests. It doesn't provide a mechanism to circumvent the browsers same origin policy.
这与 $http 无关。$http 允许您发出 XHR(XDR) 或 JSONP 请求。它不提供规避浏览器同源策略的机制。
Changing the hosts to same origin clears the issue so I assume it's trying something but man it's hard to debug.
将主机更改为同源可以清除问题，所以我认为它正在尝试某些东西，但是很难调试。
That's the key to your problem. IE8 doesn't support Cross-Origin-Resource-Sharing (CORS) very well. In order to make cross domain calls with IE8, you better off either:
这是解决您问题的关键。IE8 不能很好地支持跨域资源共享 (CORS)。为了使用 IE8 进行跨域调用，您最好选择：
- Use your nodejs app to proxy the request for you, letting you use the same domain.
- Use JSONP in your $http.get() request
- 使用您的 nodejs 应用程序为您代理请求，让您使用相同的域。
- 在您的 $http.get() 请求中使用 JSONP
There are a number of gotchas associated with CORS and IE8, which are outlined here.
回答by Sam Storie
I was running into this same issue, and while it's likely not ideal, one solution is to change IE's 'Access data sources across domains' security setting to Enableor Prompt:
我遇到了同样的问题，虽然它可能并不理想，但一种解决方案是将 IE 的“跨域访问数据源”安全设置更改为Enable或Prompt：
http://technet.microsoft.com/en-us/library/dd346862.aspx
http://technet.microsoft.com/en-us/library/dd346862.aspx
In my case I was running into the same thing when trying to fetch data (via angular's $resource) from my own API that was hosted on another domain. In IE8 & IE9 these requests would fail with the error you described above. Changing the security setting in IE to allow cross-domain data requests resolved that problem.
就我而言，我在尝试从托管在另一个域上的自己的 API 中获取数据（通过 angular 的 $resource）时遇到了同样的问题。在 IE8 和 IE9 中，这些请求将因您上面描述的错误而失败。更改 IE 中的安全设置以允许跨域数据请求解决了该问题。
回答by Ant
AngularJS doesn't support IE<=9 CORS.
AngularJS 不支持 IE<=9 CORS。
As required, there is a link to github official AngualrJS website :
根据需要，有一个到 github 官方 AngualrJS 网站的链接：
