2

我编写了一个自定义会话状态提供程序，它在调试模式下工作正常，但一旦部署在服务器（IIS 6）上，我会收到以下错误：

Event code: 3008 
Event message: A configuration error has occurred. 
Event time: 10/7/2011 3:05:02 PM 
Event time (UTC): 10/7/2011 9:35:02 AM 
Event ID: 00e2c8b1368b45608bb062eb2ba9d0db 
Event sequence: 2 
Event occurrence: 1 
Event detail code: 0 

Application information: 
    Application domain: /LM/W3SVC/1/Root/bizapp-1-129624536989844520 
    Trust level: Full 
    Application Virtual Path: ...
    Application Path: ...
    Machine name: ...

Process information: 
    Process ID: 7556 
    Process name: w3wp.exe 
    Account name: ...

Exception information: 
    Exception type: ConfigurationErrorsException 
    Exception message: Object reference not set to an instance of an object. (E:\Program Files\BizAPP\WebClient\web.config line 282) 

Request information: 
    Request URL: http://localhost:8080/bizapp/login.aspx 
    Request path: /bizapp/login.aspx 
    User host address: 127.0.0.1 
    User:  
    Is authenticated: False 
    Authentication Type:  
    Thread account name: ...

Thread information: 
    Thread ID: 1 
    Thread account name: ...
    Is impersonating: False 
    Stack trace:    at System.Web.Configuration.ProvidersHelper.InstantiateProvider(ProviderSettings providerSettings, Type providerType)
   at System.Web.SessionState.SessionStateModule.InitCustomStore(SessionStateSection config)
   at System.Web.SessionState.SessionStateModule.InitModuleFromConfig(HttpApplication app, SessionStateSection config)
   at System.Web.SessionState.SessionStateModule.Init(HttpApplication app)
   at System.Web.HttpApplication.InitModulesCommon()
   at System.Web.HttpApplication.InitModules()
   at System.Web.HttpApplication.InitInternal(HttpContext context, HttpApplicationState state, MethodInfo[] handlers)
   at System.Web.HttpApplicationFactory.GetNormalApplicationInstance(HttpContext context)
   at System.Web.HttpApplicationFactory.GetApplicationInstance(HttpContext context)
   at System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr)

编辑 第 282 行来自 web.config 提供者信息，下面的第 3 行

<sessionState mode="Custom" customProvider="SessionStateStoreProvider" timeout="180">
            <providers>
                <add name="SessionStateStoreProvider" type="type full name" />
            </providers>
        </sessionState>
4

2 回答 2

1

这意味着“对象引用未设置为对象的实例”异常发生在您的提供者的方法之一中（例如在Initialize方法中）。该代码中有一个错误。

因此，您可以在其中放置一个断点并进行调试，或者使用可以将异常转换为文本的 try catch 包围覆盖的方法，如下所示：

public class YourSessionState : SessionStateStoreProviderBase
{
    public override void Initialize(string name, NameValueCollection config)
    {
        try
        {
            // your original Initialize code here
        }
        catch (Exception e)
        {
            throw new Exception("Error in initialize: " + e);
        }
    }
}

如果您将 .PDB 文件放在 .DLL 旁边，您现在应该会看到错误行号。

于 2011-10-12T10:25:08.083 回答
-1

您没有在配置中正确指定类型。

例子：

<sessionState mode="Custom" customProvider="SessionStateStoreProvider">
  <providers>
    <add name="SessionStateStoreProvider"
         type="Namespace.To.Your.SessionStateStoreClass" />
  </providers>
</sessionState>

除非你故意省略类型。

于 2011-10-11T05:34:07.017 回答