ASP.NET MVC 设置Access-Control-Allow-Origin

跨域用JavaScript get方法请求数据时会提示
http://test.com/getdata is not allowed by Access-Control-Allow-Origin.

解决方法：
1、创建一个attribute
public class AllowCrossSiteJsonAttribute : ActionFilterAttribute
{
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
filterContext.RequestContext.HttpContext.Response.AddHeader("Access-Control-Allow-Origin", "*");
base.OnActionExecuting(filterContext);
}
}
2、应用到Controller中的Action
[AllowCrossSiteJson]
public ActionResult YourMethod()
{
return Json("data");
}

内容引用自 http://stackoverflow.com/questions/6290053/setting-access-control-allow-origin-in-asp-net-mvc-simplest-possible-method

http://www.cnblogs.com/chenxizhang/p/3821703.html