ASP.NET Core 2.0从AuthorizationHandler的HandleRequirementAsync方法重定向用户 [英] ASP.NET Core 2.0 Redirecting user from AuthorizationHandler, HandleRequirementAsync method

问题描述

我正在尝试在.net core 2.0中实现AuthorizationHandler，在该应用中我需要对用户进行授权，并基于希望重定向到应用程序验证内的不同操作方法的条件，但可以如何将用户重定向到拒绝访问"或授权失败时的登录页面.

I am trying to implement AuthorizationHandler in .net core 2.0 where i need to authorize the user and based on the condition wanted to redirect to different action methods within my application validation works ok but how i can redirect user to the Access Denied or Login page when authorization failed.

 protected override Task HandleRequirementAsync(AuthorizationHandlerContext context, HasPermissionRequirement requirement)
    {
        var controllerContext = context.Resource as AuthorizationFilterContext;

        if (sessionManager.Session.sysUserID <= 0)
        {
            controllerContext.Result = new RedirectToRouteResult(new RouteValueDictionary(new { controller = "Account", action = "Login", area = "" }));

            return Task.FromResult(0);
        }


            if (Utilities.GetInt32Negative(PermissionID) == 1 || Utilities.GetInt32Negative(PermissionID) == -1)
            {
                if (!PagePath.Equals("~/"))
                    controllerContext.Result = new RedirectToRouteResult(new RouteValueDictionary(new { controller = "Home", action = "NoAccess", area = "" }));
            }

            context.Succeed(requirement);
        }
        else
        {
            if (!PagePath.Equals("~/"))
                controllerContext.Result = new RedirectToRouteResult(new RouteValueDictionary(new { controller = "Home", action = "NoAccess", area = "" }));
        }

        return Task.FromResult(0);
    }

推荐答案

我找到了解决方案，希望这对寻找相似之处的人有所帮助，在自定义授权中，我们可以使用 AuthorizationFilterContext重定向到任何所需的控制器操作和 RedirectToActionResult

I found the solution and i hope this will help someone looking for the similar, in custom authorization we can redirect to any desired controller action using the AuthorizationFilterContext and with the RedirectToActionResult

protected override Task HandleRequirementAsync(AuthorizationHandlerContext context, HasPermissionRequirement requirement)
{
    // Get the context       
    var redirectContext = context.Resource as AuthorizationFilterContext;
    //check the condition 
    if (!result)
    {
        redirectContext.Result = new RedirectToActionResult("AccessDenied", "Home", null);
        context.Succeed(requirement);
        return Task.CompletedTask;
    }
    context.Succeed(requirement);
    return Task.CompletedTask;
}

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