在Global.asax内的服务使用依赖注入 [英] Dependency Injection of a service usage inside the global.asax

问题描述

我使用Ninject做的依赖注入。我有一个userService中，我需要从Global.asax文件访问。

I'm using Ninject to do dependency injection. I have a userService in which I need to access from the global.asax file.

我如何依赖注入呢？

    private IUserService userService;//<--this
    protected void Application_PostAuthenticateRequest(Object sender, EventArgs e)
    {
        HttpCookie authCookie = Request.Cookies[FormsAuthentication.FormsCookieName];
        if (authCookie != null)
        {
            FormsAuthenticationTicket authTicket = FormsAuthentication.Decrypt(authCookie.Value);
            var identity = new CustomIdentity(authTicket);
            string[] userRoles = userService.GetRolesForUser(identity.Name);// <-- Used here.
            var principal = new GenericPrincipal(identity, userRoles);
            Context.User = principal;
        }
    }

我使用 WebActivator 做我绑定在另一个​​文件（ NinjectMVC3 ）。这是由包的NuGet创建。

I did my bindings in another file(NinjectMVC3) using the WebActivator. Which was created by the nuget package.

推荐答案

尝试在你的方法来解决...

Instead of injection try to resolve in your method...

protected void Application_PostAuthenticateRequest(Object sender, EventArgs e)
{
  var userService = DependencyResolver.Current.GetService<IUserService>();
  ...
}

不要忘了依赖解析器设置为使用前Ninject的实现，例如在你的NinjectMVC3（WebActivator）文件。

Don't forget to set dependency resolver to Ninject's implementation before use, for example in your NinjectMVC3 (WebActivator) file.

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

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