.NET 跨域问题

解决方案：

1、针对ASP.NET MVC和ASP.NET Web API两种项目类型，我做了一些研究，确定下面的方案是可行的。

针对ASP.NET MVC，只需要在web.config中添加如下的内容即可

 1 <system.webServer>
 2 
 3 <httpProtocol>
 4 
 5 <customHeaders>
 6 
 7 <add name="Access-Control-Allow-Origin" value="*" />
 8 
 9 <add name="Access-Control-Allow-Headers" value="Content-Type" />
10 
11 <add name="Access-Control-Allow-Methods" value="GET, POST, PUT, DELETE, OPTIONS" />
12 
13 </customHeaders>
14 
15 </httpProtocol>
16 
17 <handlers>
18 
19 <remove name="ExtensionlessUrlHandler-Integrated-4.0" />
20 
21 <remove name="OPTIONSVerbHandler" />
22 
23 <remove name="TRACEVerbHandler" />
24 
25 <add name="ExtensionlessUrlHandler-Integrated-4.0" path="*." verb="*" type="System.Web.Handlers.TransferRequestHandler" preCondition="integratedMode,runtimeVersionv4.0" />
26 
27 </handlers>
28 
29 </system.webServer>

2、建立Filters，cors

 1 public class CorsAttribute : ActionFilterAttribute, IActionFilter
 2     {
 3         public override void OnResultExecuted(ResultExecutedContext filterContext)
 4         {
 5             try
 6             {
 7                 base.OnResultExecuted(filterContext);
 8                 HttpContext.Current.Response.Headers.Add("Access-Control-Allow-Origin", "*");
 9                 HttpContext.Current.Response.Headers.Add("Access-Control-Allow-Headers", "x-requested-with,content-type,requesttype,Token");
10                 HttpContext.Current.Response.Headers.Add("Access-Control-Allow-Methods", "POST,GET");
11             }
12             catch (Exception ex)
13             {
14 
15             }
16         }
17     }

View Code

页面调用：

1 [Filters.Cors]
2 public ActionResult Index()
3 {
4       return view();  
5 }