MVC中使用AuthorizeAttribute注意事项

代码调用顺序为：OnAuthorization-->AuthorizeCore-->HandleUnauthorizedRequest

如果AuthorizeCore返回false时，才会走HandleUnauthorizedRequest 方法，并且filterContext.Result是HttpUnauthorizedResult类型(注：StausCode=401)，401错误又对应了Web.config中的

所以，AuthorizeCore==false 时，会跳转到 web.config 中定义的 loginUrl="~/"

public class CheckLoginAttribute : AuthorizeAttribute
{

protected override bool AuthorizeCore(HttpContextBase
httpContext)        {
            bool Pass = false;
            if
(!CheckLogin.AdminLoginCheck())
            {

httpContext.Response.StatusCode = 401;
                Pass =
false;
            }
            else
            {

Pass = true;
            }

return Pass;
}

protected override void
HandleUnauthorizedRequest(AuthorizationContext filterContext)
{

if(filterContext.HttpContext.Request.IsAjaxRequest())

{
                if (!App.AppService.IsLogon)
                {

filterContext.Result = new JsonResult

{
                                                   Data = new {IsSuccess =
false, Message =
"不好意思,登录超时,请重新登录再操作!"},

JsonRequestBehavior =
JsonRequestBehavior.AllowGet

};
                    return; //由于JsonResult无对应StatusCode，而在AuthorizeCore中我们把httpContext.Response.StatusCode=401，所以会跳转到 web.config 中定义的 loginUrl。猜想： filterContext.Result可以赋值为 //RedirectResult、HttpUnauthorizedResult等，若没有StatusCode(像JsonResult)，则会检查Response.StatusCode

}

}
            if (App.AppService.IsLogon)
            {

return;
            }

base.HandleUnauthorizedRequest(filterContext);
            if
(filterContext.HttpContext.Response.StatusCode == 401) //对于401错误，默认会跳转到web.config 中定义的 loginUrl

{
                filterContext.Result = new
RedirectResult("/");
            }
        }

}

巴特西

MVC中使用AuthorizeAttribute注意事项

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