登录后重定向返回URL

Question

我的剃刀视图中有一个链接,如下所示:

 <a href="Home/Login?ReturnUrl=Disputes/Index"> disputes</a>

在我的登录操作方法中,我使用这个:

 public ActionResult Login(string returnUrl) {
   if (string.IsNullOrEmpty(returnUrl) && Request.UrlReferrer != null)
         returnUrl = Server.UrlEncode(Request.UrlReferrer.PathAndQuery);

   if (Url.IsLocalUrl(returnUrl) && !string.IsNullOrEmpty(returnUrl))
   {
      ViewBag.ReturnURL = returnUrl;
   }

   return View();
 }

在视图我使用这个:

 @Html.Hidden("returnUrl",@Request.QueryString)

然后在post action方法中:

 public ActionResult LogOn(LogOnModel model, string returnUrl)
 {
   if (ModelState.IsValid)
   {
      if (membershipService.ValidateUser(model.UserName, model.Password, model.Type))
      {
         formsAuthenticationService.SignIn(model.UserName, model.RememberMe);
         SetUserInfo(model.UserName);

         string decodedUrl = "";
         if (!string.IsNullOrEmpty(returnUrl))
            decodedUrl = Server.UrlDecode(returnUrl);

         if (Url.IsLocalUrl(decodedUrl))                    
            return Redirect(decodedUrl);
         else
            return Redirect("Home", Index);

      }
   }
 }

它重定向到:/Disputes/Index但它应该转到myApp/Disputes/Index带有查询字符串的url是这样的./myApp/Home/Login?ReturnUrl=/Disputes/Index

我该如何解决这个问题？

Answer 1

我使用上述建议的组合并Request.UrlReferrer获取以前的位置:

    public ActionResult LogOn(string returnUrl)
    {
        //So that the user can be referred back to where they were when they click logon
        if (string.IsNullOrEmpty(returnUrl) && Request.UrlReferrer != null)
            returnUrl = Server.UrlEncode(Request.UrlReferrer.PathAndQuery);

        if (Url.IsLocalUrl(returnUrl) && !string.IsNullOrEmpty(returnUrl))
        {
            ViewBag.ReturnURL = returnUrl;
        }
        return View();
    }

这样我就不必把位置放在了ActionLink.

我使用ViewBag.ReturnURL.填充登录页面中的隐藏字段.然后在Login HTTPPost中,ActionResult我将用户重定向到隐藏字段中的位置(如果有的话):

    [HttpPost]
    public ActionResult LogOn(LogOnModel model, string returnUrl)
    {
        //returnURL needs to be decoded
        string decodedUrl = "";
        if (!string.IsNullOrEmpty(returnUrl))
            decodedUrl = Server.UrlDecode(returnUrl);

        //Login logic...

        if (Url.IsLocalUrl(decodedUrl))
        {
            return Redirect(decodedUrl);
        }
        else
        {
            return RedirectToAction("Index", "Home");
        }
    }

Answer 2

在这种情况下,您可以让LogOn操作采用returnUrl参数,如果它不为空,则可以返回重定向到Home/Index Redirect(returnUrl);.在创建新项目时,请查看VS生成的默认AccountController.它正是如此.

Answer 3

如果ReturnURL是null,请确保从视图中调用action方法,如下所示:

// FormMethod.post is optional
@using (Html.BeginForm("Login", "Account", new { ReturnUrl = ViewBag.ReturnUrl }, FormMethod.Post))
{
    // login view html
}

账户管理员:

[AllowAnonymous]
public ActionResult Login(string returnUrl)
{
    ViewBag.ReturnUrl = returnUrl;
    return View();
}