為了使用方便，對Autofac container的簡單封裝，記錄如下，備以後用或分享給大家，歡迎討論！
1 using Autofac;
2 using Autofac.Core.Lifetime;
3 using Autofac.Integration.Mvc;
4
5 public static class ContainerManager
6 {
7 private static IContainer _container;
8
9 public static void SetContainer(IContainer container)
10 {
11 _container = container;
12 }
13
14 public static IContainer Container
15 {
16 get { return _container; }
17 }
18
19 public static T Resolve<T>(string key = "", ILifetimeScope scope = null) where T : class
20 {
21 if (scope == null)
22 {
23 //no scope specified
24 scope = Scope();
25 }
26 if (string.IsNullOrEmpty(key))
27 {
28 return scope.Resolve<T>();
29 }
30 return scope.ResolveKeyed<T>(key);
31 }
32
33 public static object Resolve(Type type, ILifetimeScope scope = null)
34 {
35 if (scope == null)
36 {
37 //no scope specified
38 scope = Scope();
39 }
40 return scope.Resolve(type);
41 }
42
43 public static T[] ResolveAll<T>(string key = "", ILifetimeScope scope = null)
44 {
45 if (scope == null)
46 {
47 //no scope specified
48 scope = Scope();
49 }
50 if (string.IsNullOrEmpty(key))
51 {
52 return scope.Resolve<IEnumerable<T>>().ToArray();
53 }
54 return scope.ResolveKeyed<IEnumerable<T>>(key).ToArray();
55 }
56
57 public static T ResolveUnregistered<T>(ILifetimeScope scope = null) where T : class
58 {
59 return ResolveUnregistered(typeof(T), scope) as T;
60 }
61
62 public static object ResolveUnregistered(Type type, ILifetimeScope scope = null)
63 {
64 if (scope == null)
65 {
66 //no scope specified
67 scope = Scope();
68 }
69 var constructors = type.GetConstructors();
70 foreach (var constructor in constructors)
71 {
72 try
73 {
74 var parameters = constructor.GetParameters();
75 var parameterInstances = new List<object>();
76 foreach (var parameter in parameters)
77 {
78 var service = Resolve(parameter.ParameterType, scope);
79 if (service == null) throw new ArgumentException("Unkown dependency");
80 parameterInstances.Add(service);
81 }
82 return Activator.CreateInstance(type, parameterInstances.ToArray());
83 }
84 catch (ArgumentException)
85 {
86
87 }
88 }
89 throw new ArgumentException("在所有的依賴項中，未找到合適的構造函數。");
90 }
91
92 public static bool TryResolve(Type serviceType, ILifetimeScope scope, out object instance)
93 {
94 if (scope == null)
95 {
96 //no scope specified
97 scope = Scope();
98 }
99 return scope.TryResolve(serviceType, out instance);
100 }
101
102 public static bool IsRegistered(Type serviceType, ILifetimeScope scope = null)
103 {
104 if (scope == null)
105 {
106 //no scope specified
107 scope = Scope();
108 }
109 return scope.IsRegistered(serviceType);
110 }
111
112 public static object ResolveOptional(Type serviceType, ILifetimeScope scope = null)
113 {
114 if (scope == null)
115 {
116 //no scope specified
117 scope = Scope();
118 }
119 return scope.ResolveOptional(serviceType);
120 }
121
122 public static ILifetimeScope Scope()
123 {
124 try
125 {
126 if (HttpContext.Current != null)
127 return AutofacDependencyResolver.Current.RequestLifetimeScope;
128
129 //when such lifetime scope is returned, you should be sure that it'll be disposed once used (e.g. in schedule tasks)
130 return Container.BeginLifetimeScope(MatchingScopeLifetimeTags.RequestLifetimeScopeTag);
131 }
132 catch (Exception)
133 {
134 //we can get an exception here if RequestLifetimeScope is already disposed
135 //for example, requested in or after "Application_EndRequest" handler
136 //but note that usually it should never happen
137
138 //when such lifetime scope is returned, you should be sure that it'll be disposed once used (e.g. in schedule tasks)
139 return Container.BeginLifetimeScope(MatchingScopeLifetimeTags.RequestLifetimeScopeTag);
140 }
141 }
142 }
使用方法如下：
1 /// <summary>
2 /// IOCConfig
3 /// </summary>
4 public class IOCConfig
5 {
6 /// <summary>
7 /// RegisterAll
8 /// </summary>
9 public static void RegisterAll()
10 {
11 var iocBuilder = new Autofac.ContainerBuilder();
12
13 //todo:為了能編譯到web目錄，並且發布方便，才在web項目中引用repository項目，在代碼中不要直接使用之
14 iocBuilder.RegisterModule<RIS.Infrastructure.RegisterModule>();
15 iocBuilder.RegisterModule<RIS.Biz.RegisterModule>();
16 iocBuilder.RegisterModule<RIS.Repository.RegisterModule>();
17
18 iocBuilder.Register((c, p) => new WebWorkContext(p.Named<string>("userToken")))
19 .As<RIS.Biz.Core.IWorkContext>()
20 .InstancePerLifetimeScope();
21
22
23 iocBuilder.RegisterControllers(Assembly.GetExecutingAssembly());
24
25 iocBuilder.RegisterApiControllers(Assembly.GetExecutingAssembly());
26
27 //iocBuilder.RegisterModelBinders(Assembly.GetExecutingAssembly());
28 //iocBuilder.RegisterModelBinderProvider();
29 //iocBuilder.RegisterModule<AutofacWebTypesModule>();
30 var config = GlobalConfiguration.Configuration;
31 iocBuilder.RegisterWebApiFilterProvider(config);
32 IContainer iocContainer = iocBuilder.Build();
33 config.DependencyResolver = new AutofacWebApiDependencyResolver(iocContainer);
34 System.Web.Mvc.DependencyResolver.SetResolver(new AutofacDependencyResolver(iocContainer));
35
36
37 RIS.Biz.Core.ContainerManager.SetContainer(iocContainer);
38 }
39 }
40
41 // 注意: 有關啟用 IIS6 或 IIS7 經典模式的說明，
42 // 請訪問 http://go.microsoft.com/?LinkId=9394801
43 /// <summary>
44 /// MvcApplication
45 /// </summary>
46 public class MvcApplication : System.Web.HttpApplication
47 {
48 /// <summary>
49 /// 程序啟動入口
50 /// </summary>
51 protected void Application_Start()
52 {
53 IOCConfig.RegisterAll();
54
55 AreaRegistration.RegisterAllAreas();
56
57 WebApiConfig.Register(GlobalConfiguration.Configuration);
58 FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
59 RouteConfig.RegisterRoutes(RouteTable.Routes);
60 BundleConfig.RegisterBundles(BundleTable.Bundles);
61 }
62 }
