c# - ASP.NET MVC 中的 NHibernate 上下文 session

Question

我想在我的 ASP.NET MVC 2 应用程序中使用 NHibernate 的上下文 session ，但我很难找到有关如何正确执行此操作的指导。

我对每个请求的 session 感兴趣。

Answer 1

如果我这样做是对的，请告诉我。这是我想出的:

Global.asax

public class MvcApplication : NinjectHttpApplication
{
    public MvcApplication()
    {
        NHibernateProfiler.Initialize();
        EndRequest += delegate { NHibernateHelper.EndContextSession(Kernel.Get<ISessionFactory>()); };            
    }

    public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
        routes.IgnoreRoute("favicon.ico");

        routes.MapRoute(
            "Default", // Route name
            "{controller}/{action}/{id}", // URL with parameters
            new { controller = "Home", action = "Index", id = UrlParameter.Optional } // Parameter defaults
            );
    }

    protected override void OnApplicationStarted()
    {
        AreaRegistration.RegisterAllAreas();
        RegisterRoutes(RouteTable.Routes);
    }   

    protected override IKernel CreateKernel()
    {
        StandardKernel kernel = new StandardKernel();
        kernel.Load(AppDomain.CurrentDomain.GetAssemblies());            
        return kernel;
    }
}

NHibernateHelper

public class NHibernateHelper
{
    public static ISessionFactory CreateSessionFactory()
    {
        var nhConfig = new Configuration();
        nhConfig.Configure();

        return Fluently.Configure(nhConfig)
            .Mappings(m =>
                m.FluentMappings.AddFromAssemblyOf<Reservation>()
                .Conventions.Add(ForeignKey.EndsWith("Id")))
#if DEBUG
            .ExposeConfiguration(cfg =>
            {
                new SchemaExport(cfg)
                    .SetOutputFile(Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "schema.sql"))
                    .Create(true, false);
            })
#endif
            .BuildSessionFactory();
    }


    public static ISession GetSession(ISessionFactory sessionFactory)
    {
        ISession session;
        if (CurrentSessionContext.HasBind(sessionFactory))
        {
            session = sessionFactory.GetCurrentSession();
        }
        else
        {
            session = sessionFactory.OpenSession();
            CurrentSessionContext.Bind(session);
        }
        return session;
    }

    public static void EndContextSession(ISessionFactory sessionFactory)
    {
        var session = CurrentSessionContext.Unbind(sessionFactory);
        if (session != null && session.IsOpen)
        {
            try
            {
                if (session.Transaction != null && session.Transaction.IsActive)
                {
                    // an unhandled exception has occurred and no db commit should be made
                    session.Transaction.Rollback();
                }
            }
            finally
            {
                session.Dispose();
            }
        }
    }
}

NHibernateModule

public class NHibernateModule : NinjectModule
{
    public override void Load()
    {
        Bind<ISessionFactory>().ToMethod(x => NHibernateHelper.CreateSessionFactory()).InSingletonScope();
        Bind<ISession>().ToMethod(x => NHibernateHelper.GetSession(Kernel.Get<ISessionFactory>()));
    }
}