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");
}