mvc4 web-api 与unity搭建接口

对于接口重要的应该是 功能实现，合法性验证,性能监控，日志等模块

通过unity aop功能可以实现统一的日志模块和性能监控。

1、新建mvc4 webapi项目 nuget添加 unity 3.0+版本 和 unity.Interception

2、重置mvc4 和webapi 的ioc容器：

 public class UnityDependencyResolver : System.Web.Mvc.IDependencyResolver, System.Web.Http.Dependencies.IDependencyResolver
     {
         private readonly IUnityContainer _unityContainer;

         public UnityDependencyResolver(IUnityContainer container)
         {
             this._unityContainer = container;
         }

         public object GetService(Type serviceType)
         {
             try
             {
                 return _unityContainer.Resolve(serviceType);
             }
             catch
             {
                 return null;
             }
         }

         public IEnumerable<object> GetServices(Type serviceType)
         {
             try
             {
                 return _unityContainer.ResolveAll(serviceType);
             }
             catch
             {
                 return new List<object>();
             }
         }

         public IDependencyScope BeginScope()
         {
             return this;
         }

         public void Dispose()
         {
         }
     }

  public class UnityConfig
     {
         public static void Register()
         {
             IUnityContainer container = new UnityContainer();
             container.AddNewExtension<Interception>(); //这里最重要
             container.LoadConfiguration();
             var unity = new UnityDependencyResolver(container);
             //设置mvc的依赖管理
             DependencyResolver.SetResolver(unity);
             //设置mvc的依赖管理
             GlobalConfiguration.Configuration.DependencyResolver = unity;
         }
     }

3、在Global.asax 里调用：

   protected void Application_Start()
         {
             AreaRegistration.RegisterAllAreas();

             WebApiConfig.Register(GlobalConfiguration.Configuration);
             FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
             RouteConfig.RegisterRoutes(RouteTable.Routes);
             BundleConfig.RegisterBundles(BundleTable.Bundles);
             UnityConfig.Register();
         }

4、最后关于 unity的配置

  <configSections>
      <section name="unity" type="Microsoft.Practices.Unity.Configuration.UnityConfigurationSection,Microsoft.Practices.Unity.Configuration" />
   </configSections> <!-- 千万别忘了这里这是实现aop扩展 -->
 <unity xmlns="http://schemas.microsoft.com/practices/2010/unity">
     <sectionExtension type="Microsoft.Practices.Unity.InterceptionExtension.Configuration.InterceptionConfigurationExtension,Microsoft.Practices.Unity.Interception.Configuration" />
     <typeAliases>
       <!-- Lifetime manager types -->
       <typeAlias alias="singleton" type="Microsoft.Practices.Unity.ContainerControlledLifetimeManager,Microsoft.Practices.Unity" />
       <typeAlias alias="external" type="Microsoft.Practices.Unity.ExternallyControlledLifetimeManager,Microsoft.Practices.Unity" />
       <typeAlias alias="perThread" type="Microsoft.Practices.Unity.PerThreadLifetimeManager,Microsoft.Practices.Unity" />

       <!-- User-defined type aliases -->
       <typeAlias alias="IBMapServer" type="CRM.Phone.Server.IBMapServer,CRM.Phone.Server" />
       <typeAlias alias="BMapServer" type="CRM.Phone.Server.BMapServer,CRM.Phone.Server" />
       <typeAlias alias="LoggingInterceptionBehavior" type="CRM.Phone.Interface.LoggingInterceptionBehavior,CRM.Phone.Interface" />
     </typeAliases>
     <container>
       <types>
         <!--<type type="IBMapServer" mapTo="BMapServer">
           <lifetime type="singleton" />
         </type>-->
       </types>
       <register type="IBMapServer" mapTo="BMapServer">
         <interceptor type="InterfaceInterceptor"/>
         <interceptionBehavior type="LoggingInterceptionBehavior"/>
       </register>
     </container>
   </unity>

这里以IBMapserver 接口为例 对IMBapserver 中所有的方法进行拦截。

5、在Controller里使用注入对象 使用Dependecy标签:

  public class BMapController : ApiController
     {

         [Dependency]
         public IBMapServer MapServer { get; set; }

         public Point GetPointByid(int id)
         {
             return MapServer.getPoint(id);
         }
    }

6、如果发现注入对象为空，而且没有报错，请一定注意文中 红色的部分

7、最后贴一下 关于Logging处理代码