SimpleInjector与MVC4集成，与Web Api集成，以及通过属性注入演示
1，与MVC集成
见http://simpleinjector.codeplex.com/wikipage?title=Integration%20Guide&referringTitle=Home
我们自己建个MVC4项目测试
1.1 nuget
只需要安装Mvc的集成即可，其它的依赖会自动安装：
Install-Package SimpleInjector.Integration.Web.Mvc
1.2 Global.asax:
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protected void Application_Start() { AreaRegistration.RegisterAllAreas(); GlobalConfiguration.Configure(WebApiConfig.Register); FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters); RouteConfig.RegisterRoutes(RouteTable.Routes); BundleConfig.RegisterBundles(BundleTable.Bundles); //按如下步骤添加 // 1. Create a new Simple Injector container var container = new Container(); // 2. Configure the container (register) //container.Register<IUserService, UserService>(Lifestyle.Transient); //container.Register<IUserRepository, SqlUserRepository>(Lifestyle.Singleton); //随便写个例子测试，名字就不计较了，Lifestyle的区别自行查文档 container.Register<Iaaa, aaa>(Lifestyle.Transient); // 3. Optionally verify the container's configuration. container.Verify(); // 4. Store the container for use by Page classes. //WebApiApplication.Container = container; System.Web.Mvc.DependencyResolver.SetResolver(new SimpleInjectorDependencyResolver(container)); // 5. register global filters //如果有注册全局过滤器的需要加此节点，和下面注释掉的方法 //RegisterGlobalFilters(GlobalFilters.Filters, container); } //public static void RegisterGlobalFilters(GlobalFilterCollection filters, Container container) //{ //} } |
1.3 测试接口和方法的实现
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public interface Iaaa{ int a { get; set; } string hello(string str);}public class aaa : Iaaa{ public aaa() { a = DateTime.Now.Millisecond; } public int a { get; set; } public string hello(string str) { return "hello " + str + " timestamp: " + a; }} |
1.4 到一个controller里面测试
注意私有变量，和构造函数的使用即可。
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public class testController : Controller{ private Iaaa _srv; public testController(Iaaa srv) { _srv = srv; } public string Index(string id) { return _srv.hello(id); }} |
访问/test/myname 正确输出"hello myname timestamp 234"
其实跟官网的一模一样：http://simpleinjector.codeplex.com/
2，与WebApi集成
http://simpleinjector.codeplex.com/wikipage?title=Web%20API%20Integration&referringTitle=Integration%20Guide
在同一个项目里测试就行了，更好演示与mvc和与web api集成的区别，所以也不需要新建项目，及添加引用了
2.1 新建一个webapi的控制器tst
基本上是复制test控制器的代码，很简单：
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public class tstController : ApiController{ private Iaaa _srv; public tstController(Iaaa srv) { _srv = srv; } public string get(string id) { return _srv.hello(id); }} |
2.2 测试失败
访问/api/tst/aaa，却直接报错Type 'WebApplication1.Controllers.tstController' does not have a default constructor，按照上面给的官网的集成说明提示更改Global.asax即可，改后如下（见修改点1和2）
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protected void Application_Start() { AreaRegistration.RegisterAllAreas(); GlobalConfiguration.Configure(WebApiConfig.Register); FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters); RouteConfig.RegisterRoutes(RouteTable.Routes); BundleConfig.RegisterBundles(BundleTable.Bundles); //按如下步骤添加 // 1. Create a new Simple Injector container var container = new Container(); // a.1 webapi, frist register controller 修改点1 var services = GlobalConfiguration.Configuration.Services; var controllerTypes = services.GetHttpControllerTypeResolver() .GetControllerTypes(services.GetAssembliesResolver()); // register Web API controllers (important! http://bit.ly/1aMbBW0) foreach (var controllerType in controllerTypes) { container.Register(controllerType); } // 2. Configure the container (register) //container.Register<IUserService, UserService>(Lifestyle.Transient); //container.Register<IUserRepository, SqlUserRepository>(Lifestyle.Singleton); //随便写个例子测试，名字就不计较了，Lifestyle的区别自行查文档 container.Register<Iaaa, aaa>(Lifestyle.Transient); // 3. Optionally verify the container's configuration. container.Verify(); // 4. Store the container for use by Page classes. //WebApiApplication.Container = container; System.Web.Mvc.DependencyResolver.SetResolver(new SimpleInjectorDependencyResolver(container)); // a.2 webapi 按照文档，写在verify()后面 修改点2 GlobalConfiguration.Configuration.DependencyResolver = new SimpleInjectorWebApiDependencyResolver(container); // 5. register global filters //如果有注册全局过滤器的需要加此节点，和下面注释掉的方法 //RegisterGlobalFilters(GlobalFilters.Filters, container); } //public static void RegisterGlobalFilters(GlobalFilterCollection filters, Container container) //{ //} } |
再测试就通过了
3，通过属性注入
我们上面演示的都是通过构造器注入，关于属性注入，SimpleInjector做了严格限制，但是还是支持，需要显式注入：http://simpleinjector.codeplex.com/wikipage?title=Advanced-scenarios&referringTitle=Home#Property-Injection
直接演示一种最简单的方法吧：
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container.RegisterInitializer<HandlerBase>(handlerToInitialize => { handlerToInitialize.ExecuteAsynchronously = true;}); |
所以完成版的Global.asax如下：
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protected void Application_Start() { AreaRegistration.RegisterAllAreas(); GlobalConfiguration.Configure(WebApiConfig.Register); FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters); RouteConfig.RegisterRoutes(RouteTable.Routes); BundleConfig.RegisterBundles(BundleTable.Bundles); //按如下步骤添加 // 1. Create a new Simple Injector container var container = new Container(); // a.1 webapi, frist register controller 修改点1 var services = GlobalConfiguration.Configuration.Services; var controllerTypes = services.GetHttpControllerTypeResolver() .GetControllerTypes(services.GetAssembliesResolver()); // register Web API controllers (important! http://bit.ly/1aMbBW0) foreach (var controllerType in controllerTypes) { container.Register(controllerType); } // 2. Configure the container (register) //container.Register<IUserService, UserService>(Lifestyle.Transient); //container.Register<IUserRepository, SqlUserRepository>(Lifestyle.Singleton); //随便写个例子测试，名字就不计较了，Lifestyle的区别自行查文档 container.Register<Iaaa, aaa>(Lifestyle.Transient); container.RegisterInitializer<tstController>(c => c.s2 = new bbb());//显然，其实就是手动指定 // 3. Optionally verify the container's configuration. container.Verify(); // 4. Store the container for use by Page classes. //WebApiApplication.Container = container; System.Web.Mvc.DependencyResolver.SetResolver(new SimpleInjectorDependencyResolver(container)); // a.2 webapi 修改点2，按照文档，写在verify()后面 GlobalConfiguration.Configuration.DependencyResolver = new SimpleInjectorWebApiDependencyResolver(container); // 5. register global filters //如果有注册全局过滤器的需要加此节点，和下面注释掉的方法 //RegisterGlobalFilters(GlobalFilters.Filters, container); } //public static void RegisterGlobalFilters(GlobalFilterCollection filters, Container container) //{ //} } |
完整版的webapi的controller如下：
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public class tstController : ApiController{ private Iaaa _srv; public Ibbb s2 { get; set;} //注意s2，是一个属性 public tstController(Iaaa srv) { _srv = srv; } //演示构造函数注入 public string get(string id) { return _srv.hello(id); } //演示属性注入 public string get() { return s2.curtime; }} |
取名字随意了点，包涵。
访问/api/tst/，得到current time is: 2013-12-15T23:06:0，我们并没有在构造器中初始化Ibbb，但已经是从aaa对象里取到了值，测试通过。
4，示例代码
git clone https://github.com/walkerwzy/simpleinjectorSample.git
标签: DI, simpleinjector