Httpcontext.Session总是带着Ninject空 [英] Httpcontext.Session is always null with Ninject

问题描述

我使用注射像ninject这个的HttpContext

I am injecting the httpcontext using ninject like this

private void RegisterDependencyResolver()
{
    HttpContextBase context = new HttpContextWrapper(HttpContext.Current);
    var kernel = new StandardKernel();
    kernel.Bind<ISession>().To<SessionService>()
                            .InRequestScope()
                           .WithConstructorArgument("context", ninjectContext => context);

    DependencyResolver.SetResolver(new NinjectDependencyResolver(kernel));
}

RegisterDependencyResolver（）被调用在Application_Start方法。

RegisterDependencyResolver() is called in the application_start method.

此接口被注入到处理会话类的构造函数。

This interface is injected into the constructor of a class that handles session.

问题是会话初始化从来没有，所以我不能添加任何东西给它。

The problem is session is never initialised so I cant add anything to it.

任何code像context.session [东西] =东西提出了一个空引用异常。

Any code like context.session["something"] ="something" raises a null reference exception.

时的Application_Start在生命周期的太早了？我以为.InRequestScope（）修复了这个，但它不为我工作。

Is Application_Start too early in the lifecycle? I thought .InRequestScope() fixes this but it doesnt work for me.

推荐答案

如果您在IIS集成模式下运行，你没有访问任何HTTP上下文对象的Application_Start 。

If you are running in IIS integrated mode you don't have access to any Http context object in Application_Start.

尝试这样的：

private void RegisterDependencyResolver()
{
    kernel
        .Bind<ISession>()
        .To<SessionService>()
        .InRequestScope()
        .WithConstructorArgument(
            "context", 
            ninjectContext => new HttpContextWrapper(HttpContext.Current)
        );

    DependencyResolver.SetResolver(new NinjectDependencyResolver(kernel));
}

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