使用 ASP.NET MVC 上传（会话和身份验证）

Question

当我对 uplodify (http://www.uploadify.com/) 使用的操作或控制器使用授权过滤器时，无法执行操作...

而且 Session 没有被检索到。

我发现这是检索到的用户会话：

http://geekswithblogs.net/apopovsky/archive/2009/05/06/working-around-flash-cookie-bug-in-asp.net-mvc.aspx

但是如何将它与[Authorize] 过滤器和检索到的会话一起使用？

Answer 1

为了纠正这个问题，我建议你一个解决方案...使用 uploadify 发送 auth cookie 值和 session id cookie 值，并在检索会话之前重新创建它。

这是要在视图中实现的代码：

<script>
    var auth = "<% = Request.Cookies[FormsAuthentication.FormsCookieName]==null ? string.Empty : Request.Cookies[FormsAuthentication.FormsCookieName].Value %>";
    var ASPSESSID = "<%= Session.SessionID %>";

    $("#uploadifyLogo").uploadify({
        ...
        formData: { ASPSESSID: ASPSESSID, AUTHID: auth }
    });

然后在 Global.asax 中：

protected void Application_BeginRequest(object sender, EventArgs e)
    {
      /* we guess at this point session is not already retrieved by application so we recreate cookie with the session id... */
        try
        {
            string session_param_name = "ASPSESSID";
            string session_cookie_name = "ASP.NET_SessionId";

            if (HttpContext.Current.Request.Form[session_param_name] != null)
            {
                UpdateCookie(session_cookie_name, HttpContext.Current.Request.Form[session_param_name]);
            }
            else if (HttpContext.Current.Request.QueryString[session_param_name] != null)
            {
                UpdateCookie(session_cookie_name, HttpContext.Current.Request.QueryString[session_param_name]);
            }
        }
        catch
        {
        }

        try
        {
            string auth_param_name = "AUTHID";
            string auth_cookie_name = FormsAuthentication.FormsCookieName;

            if (HttpContext.Current.Request.Form[auth_param_name] != null)
            {
                UpdateCookie(auth_cookie_name, HttpContext.Current.Request.Form[auth_param_name]);
            }
            else if (HttpContext.Current.Request.QueryString[auth_param_name] != null)
            {
                UpdateCookie(auth_cookie_name, HttpContext.Current.Request.QueryString[auth_param_name]);
            }

        }
        catch
        {
        }
    }

    private void UpdateCookie(string cookie_name, string cookie_value)
    {
        HttpCookie cookie = HttpContext.Current.Request.Cookies.Get(cookie_name);
        if (null == cookie)
        {
            cookie = new HttpCookie(cookie_name);
        }
        cookie.Value = cookie_value;
        HttpContext.Current.Request.Cookies.Set(cookie);
    }

瞧，用这种方法它是完全透明的。

希望对你有所帮助！！ ;)

已编辑：使用 formData 而不是 scriptData

Answer 2

对于VB转换的代码 *以 开始代码块

即

var auth='<%# IIf(Request.Cookies(FormsAuthentication.FormsCookieName) Is Nothing, "", 
     Request.Cookies(FormsAuthentication.FormsCookieName).Value)%>';

var ASPSESSID = '<%# Session.SessionID%>';

Answer 3

此解决方案效果很好。如果有人需要，我将代码翻译成 vb：

    Protected Sub Application_BeginRequest(ByVal sender As Object, ByVal e As System.EventArgs)
    'we guess at this point session is not already retrieved by application so we recreate cookie with the session id...
    Try
        Dim session_param_name = "ASPSESSID"
        Dim session_cookie_name = "ASP.NET_SessionId"

        If Not HttpContext.Current.Request.Form(session_param_name) Is Nothing Then
            UpdateCookie(session_cookie_name, HttpContext.Current.Request.Form(session_param_name))
        ElseIf Not HttpContext.Current.Request.QueryString(session_param_name) Is Nothing Then
            UpdateCookie(session_cookie_name, HttpContext.Current.Request.QueryString(session_param_name))
        End If
    Catch ex As Exception
    End Try


    Try
        Dim auth_param_name = "AUTHID"
        Dim auth_cookie_name = FormsAuthentication.FormsCookieName

        If Not HttpContext.Current.Request.Form(auth_param_name) Is Nothing Then
            UpdateCookie(auth_cookie_name, HttpContext.Current.Request.Form(auth_param_name))
        ElseIf Not HttpContext.Current.Request.QueryString(auth_param_name) Is Nothing Then
            UpdateCookie(auth_cookie_name, HttpContext.Current.Request.QueryString(auth_param_name))
        End If
    catch ex As Exception
    End Try
End Sub

Private Sub UpdateCookie(ByVal cookie_name As String, ByVal cookie_value As String)
    Dim cookie = HttpContext.Current.Request.Cookies.Get(cookie_name)
    If cookie Is Nothing Then
        cookie = New HttpCookie(cookie_name)
    End If
    cookie.Value = cookie_value
    HttpContext.Current.Request.Cookies.Set(cookie)
End Sub

这是 javascript 变量赋值的部分：

var auth = "<%=IIf(Request.Cookies(FormsAuthentication.FormsCookieName) Is Nothing, "", Request.Cookies(FormsAuthentication.FormsCookieName).Value)%>";
var ASPSESSID = "<%=Session.SessionID%>";

也许在 VB 工作的人可以从中受益。