我正在尝试从API获取JSON对象，并且该API的开发人员说他们刚刚启用了CORS，但我仍然遇到以下错误。

XMLHttpRequest无法加载http://example.com/data/action/getGame/9788578457657。所请求的资源上没有“
Access-Control-Allow-Origin”标头。因此，不允许访问源“ http：//dev.our-
domain.local ”。

我正在使用AngularJS在服务中获取JSON

app.service("gameService", function ($http, $q)
{
    function getGame(GameId) {
      var deferred = $q.defer()
      var url = 'http://example.com/data/action/getGame/' + gameId;
      // var url = 'https://jsonplaceholder.typicode.com/albums/' + gameId;  // THIS WORKS
      $http({
        method: 'GET',
        cache: true,
        url: url,
        headers: {  
           'Content-Type': 'application/json;charset=UTF-8'  
        }
      }).
      then(function(response) {
        //your code when success
        deferred.resolve(response);
        console.log('gameService HTTP CORS SUCCESS!');
      }, function(response) {
        //your code when fails
        console.log('gameService HTTP CORS ERROR!');
        // deferred.resolve('');        
        deferred.reject(response);
      });
      return deferred.promise;
    }
    this.getGame = getGame;
})

当我使用启用了CORS的jsonplaceholder对其进行测试时，我的AngularJS服务可以正常工作。

我想念什么吗？

API开发人员说，两个CORS-Header已添加到data.service响应中，但我看不到它们。这是当我curl按下JSON对象时在标题上看到的。

$ curl -X HEAD -i  http://example.com/data/action/getGame/9788578457657
HTTP/1.1 200 OK
Date: Wed, 14 Dec 2016 10:39:17 GMT
Server: WildFly/8
Expires: Wed, 14 Dec 2016 10:39:17 GMT
X-Powered-By: Undertow/1
X-dmg-elapsed-time: 20ms
X-dmg-host-address: 1??.??.???.??
Vary: Accept-Encoding,Origin
X-dmg-generated-time: Wed, 14 Dec 2016 10:39:17 GMT
Content-Type: application/json;charset=UTF-8
Content-Language: en-
X-dmg-node-name: defg_node_1
X-Varnish-Bereq-Backend: real_backend_foo_bar_uk
X-Varnish-Bereq-Retries: 0
Last-Modified: Wed, 14 Dec 2016 10:39:17 GMT
Cache-Control: public, max-age=300
X-Varnish: 6876870
Age: 0
Via: 1.1 varnish-v4
X-Varnish-Cache: MISS
X-Varnish-Trimen: www.trimen.com
X-Varnish-Served-By-Host: snarf.foo.uk
X-Varnish-Served-By-IP: 100.100.10.80
X-Varnish-Pool: http_pages
X-Varnish-Req-Backend-Hint: dead
X-Varnish-Req-Restarts: 0
X-Varnish-Hash: /data/action/getGame/9788578457657
X-Varnish-Backend-Ourself: varnish_server_snarf_foo_uk
X-DMG-Version: 6.20.51.2358
Accept-Ranges:  none
Connection: keep-alive

这是启用了CORS后应该看到的内容吗？

我是否需要在AngularJS服务中添加更多内容以启用启用了Cors的http get，并在其中添加以下内容：

headers: {  
   'Content-Type': 'application/json;charset=UTF-8'  
}

更新

传递原点：@ t.niese建议在我的curl请求的标头中

$ curl -H "Origin: http://our-production-domain.com/" --verbose \
>   http://example.com/data/action/getGame/9788578457657
*   Trying 1?.???.??.???...
* Connected to http://example.com/ (1?.???.??.???) port 80 (#0)
> GET /data/action/getGame/9788578457657 HTTP/1.1
> Host: http://example.com/
> User-Agent: curl/7.43.0
> Accept: */*
> Origin: http://our-production-domain.com/
> 
< HTTP/1.1 200 OK
< Date: Wed, 14 Dec 2016 11:05:24 GMT
< Server: WildFly/8
< Expires: Wed, 14 Dec 2016 11:05:24 GMT
< X-Powered-By: Undertow/1
< X-dmg-elapsed-time: 27ms
< X-dmg-host-address: 1??.??.???.??
< Vary: Accept-Encoding,Origin
< X-dmg-generated-time: Wed, 14 Dec 2016 11:05:24 GMT
< Content-Type: application/json;charset=UTF-8
< Content-Language: en-
< X-dmg-node-name: defg_node_1
< X-Varnish-Bereq-Backend: real_backend_foo_bar_uk
< X-Varnish-Bereq-Retries: 0
< Last-Modified: Wed, 14 Dec 2016 11:05:24 GMT
< Cache-Control: public, max-age=300
< X-Varnish: 6876870
< Age: 0
< Via: 1.1 varnish-v4
< X-Varnish-Cache: MISS
< X-Varnish-Trimen: www.trimen.com
< X-Varnish-Served-By-Host: snarf.foo.uk
< X-Varnish-Served-By-IP: 100.100.10.80
< X-Varnish-Pool: http_pages
< X-Varnish-Req-Backend-Hint: dead
< X-Varnish-Req-Restarts: 0
< X-Varnish-Hash: /data/action/getGame/9788578457657
< X-Varnish-Backend-Ourself: varnish_server_snarf_foo_uk
< X-DMG-Version: 6.20.51.2358
< Accept-Ranges:  none
< Transfer-Encoding: chunked
< Connection: keep-alive
< 
{
  "errorMessage" : null,
  "expiry" : "2016-12-14T11:05:24.379+0000",
  "data" : {
    // json object data here
  }
* Connection #0 to host http://example.com/ left intact
}

和..

$ curl -H "Origin: http://qa.our-qa-domain.com/" --verbose \
>   http://example.com/data/action/getGame/9788578457657
*   Trying 1?.???.??.???...
* Connected to http://example.com/ (1?.???.??.???) port 80 (#0)
> GET /data/action/getGame/9788578457657 HTTP/1.1
> Host: http://example.com/
> User-Agent: curl/7.43.0
> Accept: */*
> Origin: http://qa.our-qa-domain.com/
> 
< HTTP/1.1 200 OK
< Date: Wed, 14 Dec 2016 11:06:11 GMT
< Server: WildFly/8
< Expires: Wed, 14 Dec 2016 11:06:11 GMT
< X-Powered-By: Undertow/1
< X-dmg-elapsed-time: 18ms
< X-dmg-host-address: 1??.??.???.??
< Vary: Accept-Encoding,Origin
< X-dmg-generated-time: Wed, 14 Dec 2016 11:06:11 GMT
< Content-Type: application/json;charset=UTF-8
< Content-Language: en-
< X-dmg-node-name: defg_node_1
< X-Varnish-Bereq-Backend: real_backend_foo_bar_uk
< X-Varnish-Bereq-Retries: 0
< Last-Modified: Wed, 14 Dec 2016 11:06:11 GMT
< Cache-Control: public, max-age=300
< X-Varnish: 1343699
< Age: 0
< Via: 1.1 varnish-v4
< X-Varnish-Cache: MISS
< X-Varnish-Trimen: www.trimen.com
< X-Varnish-Served-By-Host: snarf.foo.uk
< X-Varnish-Served-By-IP: 100.100.10.80
< X-Varnish-Pool: http_pages
< X-Varnish-Req-Backend-Hint: dead
< X-Varnish-Req-Restarts: 0
< X-Varnish-Hash: /data/action/getGame/9788578457657
< X-Varnish-Backend-Ourself: varnish_server_snarf_foo_uk
< X-DMG-Version: 6.20.51.2358
< Accept-Ranges:  none
< Content-Length: 2988
< Connection: keep-alive
< 
{
  "errorMessage" : null,
  "expiry" : "2016-12-14T11:06:11.927+0000",
  "data" : {
     // json data object here
  }
* Connection #0 to host http://example.com/ left intact

和..

$ curl -H "Origin: http://dev.my-dev.local/" --verbose \
>   http://example.com/data/action/getGame/9788578457657
*   Trying 1?.???.??.???...
* Connected to http://example.com/ (1?.???.??.???) port 80 (#0)
> GET /data/action/getGame/9788578457657 HTTP/1.1
> Host: http://example.com/
> User-Agent: curl/7.43.0
> Accept: */*
> Origin: http://dev.my-dev.local/
> 
< HTTP/1.1 200 OK
< Date: Wed, 14 Dec 2016 11:07:10 GMT
< Server: WildFly/8
< Expires: Wed, 14 Dec 2016 11:07:10 GMT
< X-Powered-By: Undertow/1
< X-dmg-elapsed-time: 28ms
< X-dmg-host-address: 1??.??.???.??
< Vary: Accept-Encoding,Origin
< X-dmg-generated-time: Wed, 14 Dec 2016 11:07:10 GMT
< Content-Type: application/json;charset=UTF-8
< Content-Language: en-
< X-dmg-node-name: defg_node_1
< X-Varnish-Bereq-Backend: real_backend_foo_bar_uk
< X-Varnish-Bereq-Retries: 0
< Last-Modified: Wed, 14 Dec 2016 11:07:10 GMT
< Cache-Control: public, max-age=300
< X-Varnish: 6619151
< Age: 0
< Via: 1.1 varnish-v4
< X-Varnish-Cache: MISS
< X-Varnish-Trimen: www.trimen.com
< X-Varnish-Served-By-Host: snarf.foo.uk
< X-Varnish-Served-By-IP: 100.100.10.80
< X-Varnish-Pool: http_pages
< X-Varnish-Req-Backend-Hint: dead
< X-Varnish-Req-Restarts: 0
< X-Varnish-Hash: /data/action/getGame/9788578457657
< X-Varnish-Backend-Ourself: varnish_server_snarf_foo_uk
< X-DMG-Version: 6.20.51.2358
< Accept-Ranges:  none
< Content-Length: 2988
< Connection: keep-alive
< 
{
  "errorMessage" : null,
  "expiry" : "2016-12-14T11:07:10.764+0000",
  "data" : {
        // JSON object data here
  }
* Connection #0 to host http://example.com/ left intact
}

第二次更新

我在Chrome中禁用了相同的来源策略，这些是来自Chrome的网络面板的JSON请求的标头。

GET data/action/getGame/9788578457657 HTTP/1.1
Host: example.com
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache
Accept: application/json, text/plain, */*
Origin: http://dev.my-dev.local/
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.98 Safari/537.36
Referer: http://dev.my-dev.local//game/id-9788578457657
Accept-Encoding: gzip, deflate, sdch
Accept-Language: en-US,en;q=0.8

HTTP/1.1 200 OK
Date: Wed, 14 Dec 2016 15:38:38 GMT
Server: WildFly/8
Expires: Wed, 14 Dec 2016 15:38:38 GMT
X-Powered-By: Undertow/1
X-dmg-elapsed-time: 25ms
X-dmg-host-address: 172.16.0.70
Vary: Accept-Encoding,Origin
X-dmg-generated-time: Wed, 14 Dec 2016 15:38:38 GMT
Content-Type: application/json;charset=UTF-8
Content-Language: en-
X-dmg-node-name: defg_node_1
Content-Encoding: gzip
Content-Length: 1109
X-Varnish-Bereq-Backend: real_backend_foo_bar_uk
X-Varnish-Bereq-Retries: 0
Last-Modified: Wed, 14 Dec 2016 15:38:38 GMT
Cache-Control: public, max-age=300
X-Varnish: 6619151
Age: 0
Via: 1.1 varnish-v4
X-Varnish-Cache: MISS
X-Varnish-Trimen: www.trimen.com
X-Varnish-Served-By-Host: snarf.foo.uk
X-Varnish-Served-By-IP: 100.100.10.80
X-Varnish-Pool: http_pages
X-Varnish-Req-Backend-Hint: dead
X-Varnish-Req-Restarts: 0
X-Varnish-Hash: /data/action/getGame/9788578457657
X-Varnish-Backend-Ourself: arnish_server_snarf_foo_uk
X-DMG-Version: 6.20.51.2358
Accept-Ranges: none
Connection: keep-alive

第三次更新

因此，将http方法更改OPTIONS为$ http（{method：’OPTIONS’，…

我在chrome控制台中出现此错误

XMLHttpRequest无法加载http://example.com/data/action/getGame/9788578457657。对预检请求的响应未通过访问控制检查：在所请求的资源上不存在“
Access-Control-Allow-Origin”标头。因此，不允许访问原始站点 “
http：//dev.my-dev.local ”。响应的HTTP状态码为405。

这些是标题：

OPTIONS /data/action/getGame/9788578457657 HTTP/1.1
Host: example.com
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache
Access-Control-Request-Method: OPTIONS
Origin: http://dev.my-dev.local/
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.98 Safari/537.36
Access-Control-Request-Headers:
Accept: */*
Referer: http://dev.my-dev.local//game/id-9788578457657
Accept-Encoding: gzip, deflate, sdch
Accept-Language: en-US,en;q=0.8

HTTP/1.1 405 Method Not Allowed
Date: Wed, 14 Dec 2016 16:52:03 GMT
Server: Varnish
X-Varnish: 6619151
X-Varnish-Trimen: www.trimen.com
X-Varnish-Served-By-Host: snarf.foo.uk
X-Varnish-Served-By-IP: 100.100.10.80
X-Varnish-Pool: 
X-Varnish-Req-Backend-Hint: dead
X-Varnish-Req-Restarts: 0
X-DMG-Version: 6.20.51.2358
Content-Type: text/html; charset=utf-8
Retry-After: 5
Content-Length: 49669
Connection: keep-alive