使用JsonResult重定向到操作 [英] Redirect to action with JsonResult

问题描述

我有一个看法.当用户单击视图中的按钮时，我试图从视图中获取一些数据，而没有通过AJAX POST重新加载视图以显示一些数据.

I have a view. When user clicks on a button in my view, I am trying to get some data from my view without reloading my view through an AJAX POST to display some data.

这是我控制器中的方法:

This is the method in my controller :

[HttpPost]
public JsonResult GetUserTraj()
{
    var userTrajList =
        DBManager.Instance.GetUserTraj(Session["UserName"].ToString());
    return Json(userTrajList);
}

这将返回Json结果.我正在尝试实施会议.因此，如果会话已过期，我希望将用户重定向到登录"视图.在上述情况下，如果会话到期，Session["UserName"]变为null并引发异常.

This returns a Json Result. I am trying to implement session now. So if the session has expired, I want user to be redirected to the Login view. In the above case if the session expires Session["UserName"] becomes null and an exception is raised.

[HttpPost]
public JsonResult GetUserTraj()
{
    if (Session["UserName"] != null)
    {
        var userTrajList =
            DBManager.Instance.GetUserTraj(Session["UserName"].ToString());
        return Json(userTrajList);
    }
    else
    {
        RedirectToAction("Login", "Login");
        return Json(null);
    }
}

我尝试了上面的代码.但这是行不通的.它不会将用户重定向到登录"视图.我尝试了return RedirectToAction("Login", "Login");.但这不起作用，因为控制器操作方法不能返回JsonResult以外的其他值.请帮助我找到相同的解决方案.

I tried the above code. But it doesn't work. It does not redirect the user to the Login view. I tried return RedirectToAction("Login", "Login");. But that doesn't work since the controller action method cannot return something other than JsonResult. Please help me find a solution for the same.

推荐答案

如果使用AJAX请求页面，则无法在浏览器中重定向. 您应该回复一个状态码，然后使用javascript像这样

If you use AJAX to request a page, it's cant redirect in browser. You should response a status code, and then use javascript to redirect in front, like this

[HttpPost]
public JsonResult GetUserTraj()
{
    if (Session["UserName"] != null)
    {
        var userTrajList =
            DBManager.Instance.GetUserTraj(Session["UserName"].ToString());
        return Json(userTrajList);
    }
    else
    {
        //RedirectToAction("Login", "Login");
        return Json(new {code=1});
    }
}

您需要编写此条件，然后在Ajax成功调用中重新加载登录屏幕，

You need write this condition Inside of your Ajax success call to reload login screen,

if(result.code ===1){
    window.location = 'yourloginpage.html'
}

这篇关于使用JsonResult重定向到操作的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！