未在无扩展页面中设置 HTTP 模块会话

发布于 2024-09-29 06:53:28 字数 252 浏览 0 评论 0原文

我编写了一个 HTTP 模块,需要访问会话。我已完成以下操作:

  • 模块在 web.config 中注册
  • 模块将我的方法调用附加到 PostAcquireRequestState 事件
  • 模块实现 IRequiresSessionState

但是,当我的页面没有扩展名时(即 htp://www.mywebsite.com )会话不可用,我的代码失败。如果页面确实有 aspx 扩展名,那么一切都可以。

I have a HTTP module that I have written that needs to access the session. I have done the following:

  • Module is registered in web.config
  • Module attaches my method call to the PostAcquireRequestState event
  • The module implement IRequiresSessionState

However, when my page doesn't have an extension (i.e. as when htp://www.mywebsite.com) the session is not available and my code fails. If the page does have an aspx extension then all is ok.

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评论(3

記柔刀 2024-10-06 06:53:28

您需要有一个由 ASP.NET 处理的项目,以便您的模块成为请求生命周期的一部分。提供像index.html 这样的页面无法实现这一点。 ASPX 页面将。

You need to have an item that is processed by ASP.NET in order for your module to be part of the request life-cycle. Serving a page like index.html won't accomplish that. An ASPX page will.

巡山小妖精 2024-10-06 06:53:28

以下线程中的代码可以解决问题(1) :

public class Module : IHttpModule, IRequiresSessionState
{
    public void Dispose()
    {
    }

    void OnPostMapRequestHandler(object source, EventArgs e)
    {
        HttpApplication app = (HttpApplication)source;

        if (app.Context.Handler is IReadOnlySessionState || app.Context.Handler is IRequiresSessionState)
            return;

        app.Context.Handler = new MyHttpHandler(app.Context.Handler);
    }

    void OnPostAcquireRequestState(object source, EventArgs e)
    {
        HttpApplication app = (HttpApplication)source;

        MyHttpHandler resourceHttpHandler = HttpContext.Current.Handler as MyHttpHandler;

        if (resourceHttpHandler != null)
            HttpContext.Current.Handler = resourceHttpHandler.OriginalHandler;
    }

    public void Init(HttpApplication httpApp)
    {
        httpApp.PostAcquireRequestState += new EventHandler(OnPostAcquireRequestState);
        httpApp.PostMapRequestHandler += new EventHandler(OnPostMapRequestHandler);
    }

    public class MyHttpHandler : IHttpHandler, IRequiresSessionState
    {
        internal readonly IHttpHandler OriginalHandler;

        public void ProcessRequest(HttpContext context)
        {
            throw new InvalidOperationException("MyHttpHandler cannot process requests.");
        }

        public MyHttpHandler(IHttpHandler originalHandler)
        {
            OriginalHandler = originalHandler;
        }

        public bool IsReusable
        {
            get { return false; }
        }
    }
}

The code from the following thread does the trick (1):

public class Module : IHttpModule, IRequiresSessionState
{
    public void Dispose()
    {
    }

    void OnPostMapRequestHandler(object source, EventArgs e)
    {
        HttpApplication app = (HttpApplication)source;

        if (app.Context.Handler is IReadOnlySessionState || app.Context.Handler is IRequiresSessionState)
            return;

        app.Context.Handler = new MyHttpHandler(app.Context.Handler);
    }

    void OnPostAcquireRequestState(object source, EventArgs e)
    {
        HttpApplication app = (HttpApplication)source;

        MyHttpHandler resourceHttpHandler = HttpContext.Current.Handler as MyHttpHandler;

        if (resourceHttpHandler != null)
            HttpContext.Current.Handler = resourceHttpHandler.OriginalHandler;
    }

    public void Init(HttpApplication httpApp)
    {
        httpApp.PostAcquireRequestState += new EventHandler(OnPostAcquireRequestState);
        httpApp.PostMapRequestHandler += new EventHandler(OnPostMapRequestHandler);
    }

    public class MyHttpHandler : IHttpHandler, IRequiresSessionState
    {
        internal readonly IHttpHandler OriginalHandler;

        public void ProcessRequest(HttpContext context)
        {
            throw new InvalidOperationException("MyHttpHandler cannot process requests.");
        }

        public MyHttpHandler(IHttpHandler originalHandler)
        {
            OriginalHandler = originalHandler;
        }

        public bool IsReusable
        {
            get { return false; }
        }
    }
}
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