“会话已关闭！" -NHibernate [英] "Session is Closed!" - NHibernate

问题描述

这是在Web应用程序环境中:

This is in a web application environment:

初始请求能够成功完成，但是任何其他请求都会从NHibernate框架返回会话已关闭"响应.我正在使用带有以下代码的HttpModule方法:

An initial request is able to successfully complete, however any additional requests return a "Session is Closed" response from the NHibernate framework. I'm using a HttpModule approach with the following code:

public class MyHttpModule : IHttpModule
{
    public void Init(HttpApplication context)
    {
        context.EndRequest += ApplicationEndRequest;
        context.BeginRequest += ApplicationBeginRequest;
    }

    public void ApplicationBeginRequest(object sender, EventArgs e)
    {
        CurrentSessionContext.Bind(SessionFactory.Instance.OpenSession());
    }

    public void ApplicationEndRequest(object sender, EventArgs e)
    {
        ISession currentSession = CurrentSessionContext.Unbind(
            SessionFactory.Instance);

        currentSession.Dispose();
    }

    public void Dispose() { }
}

SessionFactory.Instance是我的单例实现，使用FluentNHibernate返回ISessionFactory对象.

SessionFactory.Instance is my singleton implementation, using FluentNHibernate to return an ISessionFactory object.

在我的存储库类中，我尝试使用以下语法:

In my repository class, I attempt to use the following syntax:

public class MyObjectRepository : IMyObjectRepository
{
    public MyObject GetByID(int id)
    {
        using (ISession session = SessionFactory.Instance.GetCurrentSession())
            return session.Get<MyObject>(id);
    }
}

这允许这样调用应用程序中的代码:

This allows code in the application to be called as such:

IMyObjectRepository repo = new MyObjectRepository();
MyObject obj = repo.GetByID(1);

我怀疑应该归咎于我的存储库代码，但是我不确定100％应该使用的实际实现.

I have a suspicion my repository code is to blame, but I'm not 100% sure on the actual implementation I should be using.

我在此处上发现了类似的问题.我也在实现中使用WebSessionContext，但是，除了编写自定义SessionManager之外，没有提供其他解决方案.对于简单的CRUD操作，除了内置工具(即WebSessionContext)以外，是否还需要自定义会话提供程序?

I found a similar issue on SO here. I too am using WebSessionContext in my implementation, however, no solution was provided other than writing a custom SessionManager. For simple CRUD operations, is a custom session provider required apart from the built in tools(ie WebSessionContext)?

推荐答案

我尚未测试您的代码，但从阅读此行来看:

I haven't tested your code, but from reading, this line:

using (ISession session = SessionFactory.Instance.GetCurrentSession())

在该区块退出后正在转储您的会话，然后该会话在下一次通过时被处置/无效.

is dumping your session after the block exits, and then the session is disposed/invalid on the next time through.

这是我们在应用程序中使用的模型:

Here's the model we're using in our applications:

ISession session = null;

try
{
    // Creates a new session, or reconnects a disconnected session
    session = AcquireCurrentSession();

    // Database operations go here
}
catch
{
    session.Close();
    throw;
}
finally
{
    session.Disconnect();
}

这篇关于“会话已关闭！" -NHibernate的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！