C# 如何访问在ashx中修改的aspx中的会话？

我使用uploadify上传文件，它们会自动发布到处理程序。然后，我在处理程序中修改会话，该处理程序已设置为网站公共类中的静态属性。然后，我尝试在aspx页面中访问同一会话，该值为null。我有一种感觉，这是因为cookies，但需要有一种方法来解决这个问题，而不必在url中公开sessionid

ASHX:

public class Upload : IHttpHandler, IReadOnlySessionState, IRequiresSessionState 
{

    public void ProcessRequest(HttpContext context)
    {
        ...
        CMSSession.Current.UploadedFiles.Add(fileName);
    }
}

public class CMSSession
{    
    public static CMSSession Current
    {
        get
        {
            CMSSession session = (CMSSession)HttpContext.Current.Session["__CMSSession__"];
            if (session == null)
            {
                session = new CMSSession();
                HttpContext.Current.Session["__CMSSession__"] = session;
            }
            return session;
        }
    }

    public List<string> UploadedFiles { get; set; }
}

if (CMSSession.Current.UploadedFiles != null)
{
    ...
}
else
{
    IT'S ALWAYS NULL
}

<sessionState mode="InProc" cookieless="false" /> - causes session to always null in aspx when modified in ashx
<sessionState mode="InProc" cookieless="true" /> - session value is not null, but sessionid is exposed in the url

$(Selector).uploadify({
    swf: 'uploadify.swf',
    uploader: 'Upload.ashx?ASPSESSID=<%=Session.SessionID%>'   
});

void Application_BeginRequest(object sender, EventArgs e)
{
    try
    {
        string session_param_name = "ASPSESSID";
        string session_cookie_name = "ASP.NET_SESSIONID";
        string session_value = Request.Form[session_param_name] ?? Request.QueryString[session_param_name];
        if (session_value != null) { UpdateCookie(session_cookie_name, session_value); }
    }
    catch (Exception) { }
}

void UpdateCookie(string cookie_name, string cookie_value)
{
    HttpCookie cookie = HttpContext.Current.Request.Cookies.Get(cookie_name);
    if (cookie == null)
    {
        HttpCookie cookie1 = new HttpCookie(cookie_name, cookie_value);
        Response.Cookies.Add(cookie1);
    }
    else
    {
        cookie.Value = cookie_value;
        HttpContext.Current.Request.Cookies.Set(cookie);
    }
}

会话类：

public class Upload : IHttpHandler, IReadOnlySessionState, IRequiresSessionState 
{

    public void ProcessRequest(HttpContext context)
    {
        ...
        CMSSession.Current.UploadedFiles.Add(fileName);
    }
}

public class CMSSession
{    
    public static CMSSession Current
    {
        get
        {
            CMSSession session = (CMSSession)HttpContext.Current.Session["__CMSSession__"];
            if (session == null)
            {
                session = new CMSSession();
                HttpContext.Current.Session["__CMSSession__"] = session;
            }
            return session;
        }
    }

    public List<string> UploadedFiles { get; set; }
}

if (CMSSession.Current.UploadedFiles != null)
{
    ...
}
else
{
    IT'S ALWAYS NULL
}

<sessionState mode="InProc" cookieless="false" /> - causes session to always null in aspx when modified in ashx
<sessionState mode="InProc" cookieless="true" /> - session value is not null, but sessionid is exposed in the url

$(Selector).uploadify({
    swf: 'uploadify.swf',
    uploader: 'Upload.ashx?ASPSESSID=<%=Session.SessionID%>'   
});

void Application_BeginRequest(object sender, EventArgs e)
{
    try
    {
        string session_param_name = "ASPSESSID";
        string session_cookie_name = "ASP.NET_SESSIONID";
        string session_value = Request.Form[session_param_name] ?? Request.QueryString[session_param_name];
        if (session_value != null) { UpdateCookie(session_cookie_name, session_value); }
    }
    catch (Exception) { }
}

void UpdateCookie(string cookie_name, string cookie_value)
{
    HttpCookie cookie = HttpContext.Current.Request.Cookies.Get(cookie_name);
    if (cookie == null)
    {
        HttpCookie cookie1 = new HttpCookie(cookie_name, cookie_value);
        Response.Cookies.Add(cookie1);
    }
    else
    {
        cookie.Value = cookie_value;
        HttpContext.Current.Request.Cookies.Set(cookie);
    }
}

Web.Config:

public class Upload : IHttpHandler, IReadOnlySessionState, IRequiresSessionState 
{

    public void ProcessRequest(HttpContext context)
    {
        ...
        CMSSession.Current.UploadedFiles.Add(fileName);
    }
}

public class CMSSession
{    
    public static CMSSession Current
    {
        get
        {
            CMSSession session = (CMSSession)HttpContext.Current.Session["__CMSSession__"];
            if (session == null)
            {
                session = new CMSSession();
                HttpContext.Current.Session["__CMSSession__"] = session;
            }
            return session;
        }
    }

    public List<string> UploadedFiles { get; set; }
}

if (CMSSession.Current.UploadedFiles != null)
{
    ...
}
else
{
    IT'S ALWAYS NULL
}

<sessionState mode="InProc" cookieless="false" /> - causes session to always null in aspx when modified in ashx
<sessionState mode="InProc" cookieless="true" /> - session value is not null, but sessionid is exposed in the url

$(Selector).uploadify({
    swf: 'uploadify.swf',
    uploader: 'Upload.ashx?ASPSESSID=<%=Session.SessionID%>'   
});

void Application_BeginRequest(object sender, EventArgs e)
{
    try
    {
        string session_param_name = "ASPSESSID";
        string session_cookie_name = "ASP.NET_SESSIONID";
        string session_value = Request.Form[session_param_name] ?? Request.QueryString[session_param_name];
        if (session_value != null) { UpdateCookie(session_cookie_name, session_value); }
    }
    catch (Exception) { }
}

void UpdateCookie(string cookie_name, string cookie_value)
{
    HttpCookie cookie = HttpContext.Current.Request.Cookies.Get(cookie_name);
    if (cookie == null)
    {
        HttpCookie cookie1 = new HttpCookie(cookie_name, cookie_value);
        Response.Cookies.Add(cookie1);
    }
    else
    {
        cookie.Value = cookie_value;
        HttpContext.Current.Request.Cookies.Set(cookie);
    }
}

-在ashx中修改时，导致aspx中的会话始终为空
-会话值不为null，但sessionid在url中公开

如何访问和修改ASHX文件中的当前会话而不将cookieless更改为true，然后从ASPX页面访问会话

我尝试过使用HttpContext并使用传递到ASHX中的上下文…没有任何效果

与此问题相同，但必须有一种更安全的方式：

---

有什么想法吗？

我找到了答案：当从FLASH调用处理程序时（如swfupload或uploadify），它不会将当前会话ID传递给处理程序。然后处理程序创建一个新会话。要解决此问题，请执行以下操作：

您的UI:JavaScript:

public class Upload : IHttpHandler, IReadOnlySessionState, IRequiresSessionState 
{

    public void ProcessRequest(HttpContext context)
    {
        ...
        CMSSession.Current.UploadedFiles.Add(fileName);
    }
}

public class CMSSession
{    
    public static CMSSession Current
    {
        get
        {
            CMSSession session = (CMSSession)HttpContext.Current.Session["__CMSSession__"];
            if (session == null)
            {
                session = new CMSSession();
                HttpContext.Current.Session["__CMSSession__"] = session;
            }
            return session;
        }
    }

    public List<string> UploadedFiles { get; set; }
}

if (CMSSession.Current.UploadedFiles != null)
{
    ...
}
else
{
    IT'S ALWAYS NULL
}

<sessionState mode="InProc" cookieless="false" /> - causes session to always null in aspx when modified in ashx
<sessionState mode="InProc" cookieless="true" /> - session value is not null, but sessionid is exposed in the url

$(Selector).uploadify({
    swf: 'uploadify.swf',
    uploader: 'Upload.ashx?ASPSESSID=<%=Session.SessionID%>'   
});

void Application_BeginRequest(object sender, EventArgs e)
{
    try
    {
        string session_param_name = "ASPSESSID";
        string session_cookie_name = "ASP.NET_SESSIONID";
        string session_value = Request.Form[session_param_name] ?? Request.QueryString[session_param_name];
        if (session_value != null) { UpdateCookie(session_cookie_name, session_value); }
    }
    catch (Exception) { }
}

void UpdateCookie(string cookie_name, string cookie_value)
{
    HttpCookie cookie = HttpContext.Current.Request.Cookies.Get(cookie_name);
    if (cookie == null)
    {
        HttpCookie cookie1 = new HttpCookie(cookie_name, cookie_value);
        Response.Cookies.Add(cookie1);
    }
    else
    {
        cookie.Value = cookie_value;
        HttpContext.Current.Request.Cookies.Set(cookie);
    }
}

从以下位置上传并简化：

如果使用formsauthentication，则可能需要使用authid：

&AUTHID=<%= Request.Cookies[FormsAuthentication.FormsCookieName] == null ? "" : Request.Cookies[FormsAuthentication.FormsCookieName].Value %>

---

现在，您可以从IE、Chrome、FF等中的处理程序（甚至使用我在问题中使用的静态会话对象）访问同一会话。

Context.session为null

因为到

HttpHandler

的连接有另一个

上下文。会话

（调试并尝试：

Context.Session.SessionId

中的文件输入与Upload.ashx中的

Context.Session.SessionId

不同）

我建议一种解决方法：传递对第二个会话中所需元素的引用（在我的示例中，我使用SessionId变量传递原始的

SessionId

）

---

如果您需要共享复杂元素，请使用Context.Application而不是Context.Session，使用原始SessionID:

Context.Application[“SharedElement”+SessionID]

您是否使用相同的域名访问ASPX页面和ASHX页面？我在本地主机上的开发中，所以是的。嗯。我会看看饼干，看看路径是什么。也许cookie只限于一个页面或其他什么？这显然是一个浏览器问题。IE将sessionid复制到ashx、chrome、ff、ect。不，如果cookie对该路径有效，浏览器将发送它。如果你看一下HTTP流量，它可能就在那里。试试Win的解决方案，看看它是否有效。很高兴你发现了这一点，糟糕的是，你必须跳过所有这些障碍！是啊，碰到这样的问题可不好玩。我觉得恼人的是，经过这么多年，仍然没有一个真正干净、漂亮、简单的webforms文件上传解决方案。在某些地方似乎总是有一个问题。这正是我想要的。这值得我投赞成票！谢谢我很高兴这对你有帮助，搞清楚到底发生了什么并不好玩，哈哈。