Ninject/MVC3自定义模型活页夹-激活时出错



我正试图将会话字典类的依赖项注入控制器的构造函数中。例如:

public AccountController(ISessionDictionary sessionDictionary)
{
    this.sessionDictionary = sessionDictionary;
}

在我的global.asax文件中:

protected void Application_Start()
{
    AreaRegistration.RegisterAllAreas();
    RegisterGlobalFilters(GlobalFilters.Filters);
    RegisterRoutes(RouteTable.Routes);
    ModelBinders.Binders.Add(typeof(ISessionDictionary), new SessionDictionaryBinder());
}

我的会话DictionaryBinder:

public class SessionDictionaryBinder : IModelBinder
{
    private const string sessionKey = "_seshDic";
    public object BindModel(ControllerContext controllerContext,
                            ModelBindingContext bindingContext)
    {
        if (bindingContext.Model != null)
        {
            throw new InvalidOperationException("Cannot update instances");
        }
        ISessionDictionary seshDic = (SessionDictionary)controllerContext.HttpContext.Session[sessionKey];
        if (seshDic == null)
        {
            seshDic = new SessionDictionary();
            controllerContext.HttpContext.Session[sessionKey] = seshDic;
        }
        return seshDic;
    }
}

当我转到/帐户/登录时,我得到错误:

Error activating ISessionDictionary
No matching bindings are available, and the type is not self-bindable.
Activation path:
 2) Injection of dependency ISessionDictionary into parameter sessionDictionary of constructor of     type AccountController
 1) Request for AccountController

我将Ninject用于DI,并且App_Start目录中包含的文件中的其他绑定工作正常。我假设modelbinder应该进入该文件,但语法是什么?

干杯!

在我看来,你把事情搞混了。在这里,您可以将模型绑定器注册到MVC3 Framework:

protected void Application_Start()
{
    AreaRegistration.RegisterAllAreas();
    RegisterGlobalFilters(GlobalFilters.Filters);
    RegisterRoutes(RouteTable.Routes);
    ModelBinders.Binders.Add(typeof(ISessionDictionary), new SessionDictionaryBinder());
}

在注册之后,您可以编写期望ISessionDictionary实例的Controller操作,但这与控制器构造函数无关。Ninject不知道你的绑定,所以你必须在你正在使用的Ninject模块中包括你的绑定(如果你没有需要ISessionDictionary参数的操作,那么你根本不需要模型绑定器)

相关内容

  • 没有找到相关文章

最新更新