我正在使用像这样的ninject注入httpcontext
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));
}
在Application_start方法中调用RegisterDependencyResolver().
此接口注入到处理会话的类的构造函数中.
任何像context.session [“something”] =“something”的代码都会引发空引用异常.
Application_Start在生命周期中是否过早？我以为.InRequestScope()修复了这个问题,但它对我不起作用.
解决方法
如果您在IIS集成模式下运行,则无法访问Application_Start中的任何Http上下文对象.
试试这样：
private void RegisterDependencyResolver()
{
kernel
.Bind<ISession>()
.To<SessionService>()
.InRequestScope()
.WithConstructorArgument(
"context",ninjectContext => new HttpContextWrapper(HttpContext.Current)
);
DependencyResolver.SetResolver(new NinjectDependencyResolver(kernel));
}
