问题描述
我在 .net4 上有一个 MVC3 应用程序,它的会话在开发环境中工作,但不在生产环境中工作.
在生产中,我记录了 sessionID,它在我从会话中设置和获取的那一刻是相同的.
当我尝试获取会话时,我收到 Null Exception
.
这是我访问会话的方式:
公共静态类HandlersHttpStorage{公共静态字符串 TestSession{得到{return HttpContext.Current.Session["time"];//这是空的}放{HttpContext.Current.Session.Add("time", value);//DateTime.Now.ToString()}}}
让我担心的是生产中的行为与开发中的行为不同,即使 web.config 是相同的.
解决方案 1:
链接: HttpContext.Current.路由请求时会话为空
明白了.其实挺傻的在我删除 & 后它起作用了像这样添加了 SessionStateModule:
...<system.webServer>...<模块><删除名称=会话"/><add name="Session" type="System.Web.SessionState.SessionStateModule"/>...</模块></system.webServer></配置>简单地添加它是行不通的,因为会话"应该已经在 machine.config
中定义了.
现在,我想知道这是否是通常的做法.肯定不是这样,因为它看起来很粗糙......
解决方案 2:
链接: HttpContext.Current.Session null item
sessionKey 可能会改变,你可能只需要这样做:
HttpContext.Current.Session["CurrentUser"]
或者会话可能过期,检查超时:
http://msdn.microsoft.com/en-us/library/h6bb9cz9(VS.71).aspx
或者您可能正在其他地方设置会话值,通常我通过一个属性控制对会话/上下文对象的访问
static readonly string SESSION_CurrentUser = "CurrentUser";公共静态站点用户创建(){SiteUser.Current = new SiteUser();返回 SiteUser.Current;}公共静态站点用户当前{得到 {if (HttpContext.Current.Session == null || HttpContext.Current.Session[SESSION_CurrentUser] == null) {抛出新的 SiteUserAutorizationExeption();}返回 HttpContext.Current.Session[SESSION_CurrentUser] 作为 SiteUser;}放 {if (!HttpContext.Current.Session == null) {HttpContext.Current.Session[SESSION_CurrentUser] = 值;}}}
I have an MVC3 application on .net4 that its session working in the dev Environment, but not in the production.
In the production I logged the sessionID and the it is the same in the moment I Set and Get from the session.
When I try to get the session I am getting Null Exception
.
This is how I access the session:
public static class HandlersHttpStorage
{
public static string TestSession
{
get
{
return HttpContext.Current.Session["time"];//This is null
}
set
{
HttpContext.Current.Session.Add("time", value);//DateTime.Now.ToString()
}
}
}
What's makes me worried is that the behavior in the production is different than the development, even though the web.config is the same.
Solution 1:
Link: HttpContext.Current.Session is null when routing requests
Got it. Quite stupid, actually. It worked after I removed & added the SessionStateModule like so:
<configuration>
...
<system.webServer>
...
<modules>
<remove name="Session" />
<add name="Session" type="System.Web.SessionState.SessionStateModule"/>
...
</modules>
</system.webServer>
</configuration>
Simply adding it won't work since "Session" should have already been defined in the machine.config
.
Now, I wonder if that is the usual thing to do. It surely doesn't seem so since it seems so crude...
Solution 2:
Link: HttpContext.Current.Session null item
sessionKey may be changing, you probably only need to do:
HttpContext.Current.Session["CurrentUser"]
Or the session may be expiring, check the timeout:
http://msdn.microsoft.com/en-us/library/h6bb9cz9(VS.71).aspx
Or you may be setting the session value from somewhere else, normally i control access to Session/Context object through one property
static readonly string SESSION_CurrentUser = "CurrentUser";
public static SiteUser Create() {
SiteUser.Current = new SiteUser();
return SiteUser.Current;
}
public static SiteUser Current {
get {
if (HttpContext.Current.Session == null || HttpContext.Current.Session[SESSION_CurrentUser] == null) {
throw new SiteUserAutorizationExeption();
}
return HttpContext.Current.Session[SESSION_CurrentUser] as SiteUser;
}
set {
if (!HttpContext.Current.Session == null) {
HttpContext.Current.Session[SESSION_CurrentUser] = value;
}
}
}
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