14

我有一个 Rails 服务为我的 AngularJS 前端应用程序返回数据。该服务被配置为通过返回适当的标头来允许 CORS 请求。

当我发出 GET 请求来接收数据时,会发送 CORS 标头,以及我之前在登录时收到的会话 cookie,您可以自己查看:

Request URL:http://10.211.194.121:3000/valoradores
Request Method:GET
Status Code:200 OK

Request Headers
Accept:application/json, text/plain, */*
Accept-Encoding:gzip,deflate,sdch
Accept-Language:en-US,en;q=0.8
Cache-Control:no-cache
Connection:keep-alive
Cookie:_gestisol_session=BAh7B0kiDHVzZXJfaWQGOgZFRmkASSIPc2Vzc2lvbl9pZAY7AEZJIiVmYTg3YTIxMjcxZWMxNjZiMjBmYWZiODM1ODQzMjZkYQY7AFQ%3D--df348feea08d39cbc9c817e49770e17e8f10b375
Host:10.211.194.121:3000
Origin:http://10.211.194.121:8999
Pragma:no-cache
Referer:http://10.211.194.121:8999/
User-Agent:Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36
X-Requested-With:XMLHttpRequest

Response Headers
Access-Control-Allow-Credentials:true
Access-Control-Allow-Headers:X-Requested-With,X-Prototype-Version,Content-Type,Cache-Control,Pragma,Origin
Access-Control-Allow-Methods:GET,POST,OPTIONS
Access-Control-Allow-Origin:http://10.211.194.121:8999
Access-Control-Max-Age:1728000
Cache-Control:max-age=0, private, must-revalidate
Connection:Keep-Alive
Content-Length:5389
Content-Type:application/json; charset=utf-8
Date:Mon, 04 Nov 2013 14:30:51 GMT
Etag:"2470d69bf6db243fbb337a5fb3543bb8"
Server:WEBrick/1.3.1 (Ruby/1.9.3/2011-10-30)
X-Request-Id:15027b3d323ad0adef7e06103e5aa3a7
X-Runtime:0.017379
X-Ua-Compatible:IE=Edge

一切正常,我找回了我的数据。

但是当我发出 POST 请求时,CORS 标头和会话 cookie 都不会随请求一起发送,并且 POST 在服务器上被取消,因为它没有会话标识符。这些是请求的标头:

Request URL:http://10.211.194.121:3000/valoraciones

Request Headers
Accept:application/json, text/plain, */*
Cache-Control:no-cache
Content-Type:application/json;charset=UTF-8
Origin:http://10.211.194.121:8999
Pragma:no-cache
Referer:http://10.211.194.121:8999/
User-Agent:Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36
X-Requested-With:XMLHttpRequest

Request Payload
{valoracione:{revisiones_id:1, valoradores_id:1}}
valoracione: {revisiones_id:1, valoradores_id:1}

并且服务以 403 响应,因为请求不包含会话 cookie。

我不知道为什么 POST 请求失败,因为 $resource 的配置就像另一个一样,并且我已经为 $httpProvider 定义了默认值来发送凭据(并且它在 GET 请求成功时正常工作):

  .config(['$httpProvider', function($httpProvider) {
     $httpProvider.defaults.withCredentials = true;
    }])

当我在实例上调用 $save() 时,这是失败的资源:

'use strict';

angular.module('gestisolApp')
  .service('ValoracionesService', ['$resource', 'API_BASE_URL', function ValoracionesService($resource, API_BASE_URL) {
    this.valoraciones = $resource(API_BASE_URL + '/valoraciones');
  }]);

这是通过 query() 调用成功的服务:

'use strict';

angular.module('gestisolApp')
  .service('ValoradoresService', ['$resource', 'API_BASE_URL', function ValoradoresService($resource, API_BASE_URL) {
    this.valoradores = $resource(API_BASE_URL + '/valoradores');
  }]);

它们非常相似。

有人知道为什么在没有会话 cookie 的情况下发送 POST 吗?

编辑

只是为了完成信息,预检是通过以下方法处理的,并且在失败的 POST 之前的请求是一个成功的 200 响应代码的 OPTIONS ,因此可以正常处理:

def cors_preflight_check
        headers['Access-Control-Allow-Origin'] = 'http://10.211.194.121:8999'
        headers['Access-Control-Allow-Methods'] = 'GET,POST,OPTIONS'
        headers['Access-Control-Allow-Headers'] = 'X-Requested-With,X-Prototype-Version,Content-Type,Cache-Control,Pragma,Origin'
        headers['Access-Control-Allow-Credentials'] = 'true'
        headers['Access-Control-Max-Age'] = '1728000'
        render :nothing => true, :status => 200, :content_type => 'text/html'
end

这是失败 POST 之前的 CORS OPTIONS 请求/响应交换:

Request URL:http://10.211.194.121:3000/valoraciones
Request Method:OPTIONS
Status Code:200 OK

Request Headers
Accept:*/*
Accept-Encoding:gzip,deflate,sdch
Accept-Language:en-US,en;q=0.8
Access-Control-Request-Headers:accept, x-requested-with, content-type
Access-Control-Request-Method:POST
Connection:keep-alive
Host:10.211.194.121:3000
Origin:http://10.211.194.121:8999
Referer:http://10.211.194.121:8999/
User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/30.0.1599.101 Safari/537.36

Response Headers
Access-Control-Allow-Credentials:true
Access-Control-Allow-Headers:X-Requested-With,X-Prototype-Version,Content-Type,Cache-Control,Pragma,Origin
Access-Control-Allow-Methods:GET,POST,OPTIONS
Access-Control-Allow-Origin:http://10.211.194.121:8999
Access-Control-Max-Age:1728000
Cache-Control:max-age=0, private, must-revalidate
Connection:Keep-Alive
Content-Length:1
Content-Type:text/html; charset=utf-8
Date:Mon, 04 Nov 2013 15:57:38 GMT
Etag:"7215ee9c7d9dc229d2921a40e899ec5f"
Server:WEBrick/1.3.1 (Ruby/1.9.3/2011-10-30)
X-Request-Id:6aa5bb4359d54ab5bfd169e530720fa9
X-Runtime:0.003851
X-Ua-Compatible:IE=Edge

编辑 2:我更改了标题以清楚地反映我的问题

4

3 回答 3

15

我遇到了类似的问题,并在 angular $http CORS 请求解决问题之前添加了以下内容。$http.defaults.withCredentials = true;

有关详细信息,请参阅https://developer.mozilla.org/en-US/docs/HTTP/Access_control_CORS#Requests_with_credentials

于 2013-11-05T08:08:49.240 回答
5

当涉及到 CORS 时,您的浏览器将在 POST 请求之前发送一个 OPTIONS 请求。

我不知道 Rails 的具体细节,但我猜你必须配置 Rails 才能使用足够的 CORS 标头实际回答 OPTIONS 请求。

以下代码仅用于比较 - 它显示了您将如何解决 Java 中的问题:

public void doOptions(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    resp.setHeader("Access-Control-Allow-Origin", "http://10.211.194.121:8999");
    resp.setHeader("Access-Control-Allow-Credentials", "true");
    resp.setHeader("Access-Control-Allow-Methods", "OPTIONS, POST, GET");
    resp.setHeader("Access-Control-Allow-Headers", "X-Requested-With,X-Prototype-Version,Content-Type,Cache-Control,Pragma,Origin");
    resp.setHeader("Access-Control-Max-Age", "600");
    resp.setHeader("Access-Control-Expose-Headers","Access-Control-Allow-Origin");
    super.doOptions(req, resp);
}

但它可能会让你走上正确的轨道,如何在 Rails 中配置它。

于 2013-11-04T15:19:22.757 回答
2

好的,我终于弄清楚发生了什么。

通过在这个问题上发布的答案,我从 cookie 中删除了 HttpOnly 参数并让它在 Firefox 上运行。稍后对于 Chrome,只需应用答案中的其余建议即可使其正常工作,例如为 cookie 设置域。

于 2013-11-05T07:50:29.197 回答