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我有一個過濾器和過濾器提供商以這種方式設置：我在RequestScope的DbContext使用Ninject扔：「因爲在的DbContext已配置的操作無法完成」
public class AuditoriaFilter : IActionFilter
{
#region Fields
private readonly IRegistrarAuditoriaService _registrarAuditoriaService;
private readonly IUsuarioRepository _usuarioRepository;
private readonly ISiteRepository _siteRepository;
private readonly IModuloRepository _moduloRepository;
private readonly IAtividadeRepository _atividadeRepository;
#endregion
#region Constructors
public AuditoriaFilter(IRegistrarAuditoriaService registrarAuditoriaService, IUsuarioRepository usuarioRepository, ISiteRepository siteRepository, IModuloRepository moduloRepository, IAtividadeRepository atividadeRepository)
{
this._registrarAuditoriaService = registrarAuditoriaService;
this._usuarioRepository = usuarioRepository;
this._siteRepository = siteRepository;
this._moduloRepository = moduloRepository;
this._atividadeRepository = atividadeRepository;
}
#endregion
public void OnActionExecuted(ActionExecutedContext context)
{
Usuario usuario = _usuarioRepository.GetById(1);
Site site = _siteRepository.GetById(1);
Modulo modulo = _moduloRepository.GetById(1);
Atividade atividade = _atividadeRepository.GetById(1);
_registrarAuditoriaService.Registrar(usuario, site, modulo, atividade);
}
public void OnActionExecuting(ActionExecutingContext filterContext)
{
}
}
篩選供應商：
public class AuditoriaFilterProvider : IFilterProvider
{
#region Fields
private readonly IRegistrarAuditoriaService _registrarAuditoriaService;
private readonly IUsuarioRepository _usuarioRepository;
private readonly ISiteRepository _siteRepository;
private readonly IModuloRepository _moduloRepository;
private readonly IAtividadeRepository _atividadeRepository;
#endregion
#region Constructors
public AuditoriaFilterProvider(IRegistrarAuditoriaService registrarAuditoriaService, IUsuarioRepository usuarioRepository, ISiteRepository siteRepository, IModuloRepository moduloRepository, IAtividadeRepository atividadeRepository)
{
this._registrarAuditoriaService = registrarAuditoriaService;
this._usuarioRepository = usuarioRepository;
this._siteRepository = siteRepository;
this._moduloRepository = moduloRepository;
this._atividadeRepository = atividadeRepository;
}
#endregion
public IEnumerable<Filter> GetFilters(ControllerContext controllerContext, ActionDescriptor actionDescriptor)
{
bool postHttpMethod = controllerContext.RequestContext.HttpContext.Request.HttpMethod.ToUpper() == "POST";
string controllerName = actionDescriptor.ControllerDescriptor.ControllerName;
if (postHttpMethod && controllerName != "Login")
yield return new Filter(new AuditoriaFilter(_registrarAuditoriaService, _usuarioRepository, _siteRepository, _moduloRepository, _atividadeRepository), FilterScope.Action, null);
yield break;
}
}
的Global.asax：
public static void RegisterGlobalFilters(GlobalFilterCollection filters)
{
AuditoriaFilterProvider auditoriaFilterProvider = new AuditoriaFilterProvider(DependencyResolver.Get<IRegistrarAuditoriaService>(), DependencyResolver.Get<IUsuarioRepository>(), DependencyResolver.Get<ISiteRepository>(), DependencyResolver.Get<IModuloRepository>(), DependencyResolver.Get<IAtividadeRepository>());
FilterProviders.Providers.Add(auditoriaFilterProvider);
}
我所有的Ninject設置相同方式都行，只有DbContext不同的是：它是InRequestScope()：
public override void Load()
{
Bind<IDbContext>().To<DbContext>().InRequestScope().WithConstructorArgument("connectionString", ConfigurationManager.AppSettings["DefaultConnectionString"]);
}
如果我把DbContext在InSingletonScope()所有工作正常，但DbContext不能留在SingletonScope，它必須是在RequestScope。
所有控制器都依賴於的DbContext正常工作時的DbContext是InRequestScope，但是當是時候.NET中使用第二請求的例外是把它僅適用於第一個請求的過濾器，：「的操作不能由於完成了的DbContext已設置。」