asp.net-mvc - 不允许子操作执行重定向操作 - MVC

Question

这个问题在这里已经有了答案:

Child actions are not allowed to perform redirect actions, after setting the site on HTTPS [duplicate] (3 个回答)

关闭 6年前。

我有一个 _layout 加载菜单:

...
@Html.Action("MenuRole","Menu")
...

在 Action MenuRole 中，我使用 Action Filter 检查 session :

[CheckSession]
[ChildActionOnly]
public ActionResult MenuRole()
{
    ....
    return PartialView("_LoadMenu",menuModel);
//_LoadMenu is partial view to show menurole
}

并且在行动过滤器:

public class CheckSession : ActionFilterAttribute, IActionFilter
    {

        public override void OnActionExecuting(ActionExecutingContext filterContext)
        {
            var ctx = filterContext.HttpContext;

            //if Session == null => Login page
            if (ctx.Session["Username"] == null)
            {
                filterContext.Result = new RedirectToRouteResult(new RouteValueDictionary(new { action = "Index", controller = "Login" }));

            }

            base.OnActionExecuting(filterContext);
        }
    }

session 超时时，_layout 在@Html.Action("MenuRole","Menu") 中显示错误:不允许子 Action 执行重定向 Action

Answer 1

我遇到了同样的异常，我通过检查 IsChildAction 解决了这个问题:

        //if Session == null => Login page
        if (ctx.Session["Username"] == null && !filterContext.IsChildAction)
        {
            filterContext.Result = new RedirectToRouteResult(new RouteValueDictionary(new { action = "Index", controller = "Login" }));
        }

解决了我的问题