【发布时间】：2016-01-27 12:29:19
【问题描述】：
我的 Web Api 项目中有一个自定义 AuthorizationFilter 属性，就像这样
[AttributeUsage(AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false)]
public class GenericAuthenticationFilter : AuthorizationFilterAttribute
{
/// <summary>
/// Public default Constructor
/// </summary>
public GenericAuthenticationFilter()
{
}
private readonly bool _isActive = true;
/// <summary>
/// parameter isActive explicitly enables/disables this filter.
/// </summary>
/// <param name="isActive"></param>
public GenericAuthenticationFilter(bool isActive)
{
_isActive = isActive;
}
/// <summary>
/// Checks basic authentication request
/// </summary>
/// <param name="filterContext"></param>
public override void OnAuthorization(HttpActionContext filterContext)
{
if (!_isActive) return;
var identity = FetchAuthHeader(filterContext);
if (identity == null)
{
ChallengeAuthRequest(filterContext);
return;
}
var genericPrincipal = new GenericPrincipal(identity, null);
Thread.CurrentPrincipal = genericPrincipal;
if (!OnAuthorizeUser(identity.Name, identity.Password, filterContext))
{
ChallengeAuthRequest(filterContext);
return;
}
base.OnAuthorization(filterContext);
}
我的 StartUpClass 是这样的
public class Startup
{
public void Configuration(IAppBuilder app)
{
// For more information on how to configure your application, visit http://go.microsoft.com/fwlink/?LinkID=316888
// Get your HttpConfiguration. In OWIN, you'll create one
// rather than using GlobalConfiguration.
var config = new HttpConfiguration();
WebApiConfig.Register(config);
IoC.Instance.RegisterApiControllers(Assembly.GetExecutingAssembly());
config.DependencyResolver =
new AutofacWebApiDependencyResolver(IoC.Instance.GetComponentsContainer());
// Register your Web Api controllers.
IoC.Instance.RegisterApiControllers(Assembly.GetExecutingAssembly());
IoC.Instance.RegisterWebApiModelBinders(Assembly.GetExecutingAssembly());
IoC.Instance.RegisterWebApiModelBinderProvider();
IoC.Instance.RegisterWebApiFilterProvider(config);
// Register the Autofac middleware FIRST, then the Autofac Web API middleware,
// and finally the standard Web API middleware.
app.UseAutofacMiddleware(IoC.Instance.GetComponentsContainer());
app.UseAutofacWebApi(config);
app.UseWebApi(config);
}
}
我的所有依赖关系都解决的IoC类是这样的
public class IoC : ContainerBuilder
{
/// <summary>
///
/// </summary>
private readonly static IoC _instance = new IoC();
/// <summary>
///
/// </summary>
private static object _lock;
/// <summary>
///
/// </summary>
private IContainer _componentsContainer;
/// <summary>
///
/// </summary>
public static IoC Instance
{
get
{
return _instance;
}
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public IContainer GetComponentsContainer()
{
if (_componentsContainer == null)
{
lock (_lock)
{
if (_componentsContainer == null)
_componentsContainer = this.Build();
}
}
return _componentsContainer;
}
/// <summary>
///
/// </summary>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
public T Resolve<T>() where T : class
{
return GetComponentsContainer().Resolve<T>();
}
/// <summary>
///
/// </summary>
/// <returns></returns>
public ILifetimeScope BeginLifetimeScope()
{
return GetComponentsContainer().BeginLifetimeScope();
}
/// <summary>
///
/// </summary>
private IoC()
{
_lock = new object();
ConfigureDependencies();
}
/// <summary>
///
/// </summary>
private void ConfigureDependencies()
{
//Configure all your depedendencies here!!
//Database connection
var connectionString = ConfigurationManager.ConnectionStrings["DBConnectionStringName"].ConnectionString;
this.Register(c => new SqlConnection(connectionString)).As<IDbConnection>().InstancePerRequest();// InstancePerLifetimeScope();
//Database Connection OrmLite
OrmLiteConfig.DialectProvider = SqlServerDialect.Provider;
//Register Repositories
this.RegisterType<Repository>().As<IRepository>().InstancePerRequest();// InstancePerLifetimeScope();
// Register Services
this.RegisterType<UserService>().As<IUserService>().InstancePerRequest();// InstancePerLifetimeScope();
this.RegisterType<TokenService>().As<ITokenService>().InstancePerRequest();
this.RegisterType<DKMenuService>().As<IDKMenuService>().InstancePerRequest();// InstancePerLifetimeScope();
this.RegisterType<DKGRIDTblService>().As<IDKGRIDTblService>().InstancePerRequest();// InstancePerLifetimeScope();
this.RegisterType<FKService>().As<IFKService>().InstancePerRequest();// InstancePerLifetimeScope();
this.RegisterType<LOVService>().As<ILOVService>().InstancePerRequest();// InstancePerLifetimeScope();
this.RegisterType<JobService>().As<IJobService>().InstancePerRequest();// InstancePerLifetimeScope();
this.RegisterType<MADEService>().As<IMADEService>().InstancePerRequest();// InstancePerLifetimeScope();
}
}
我用这个过滤器装饰我的控制器
[GenericAuthenticationFilter]
public AuthenticateController(ITokenService tokenService)
{
_tokenService = tokenService;
}
我的问题是 GenericAuthenticationFilter 的 OnAuthorazation 方法永远不会被触发。 如果在 IoC 类上我将 InstancePerRequest 更改为 InstancePerLifetimeScope 一切正常，但我希望我的依赖项能够按请求工作
有什么想法吗？
【问题讨论】：
标签： c# attributes asp.net-web-api2 autofac