依赖注入Unity框架

依赖注入和控制反转是对同一件事情的不同描述，从某个方面讲，就是它们描述的角度不同。依赖注入是从应用程序的角度在描述，可以把依赖注入描述完整点：应用程序依赖容器创建并注入它所需要的外部资源；而控制反转是从容器的角度在描述，描述完整点：容器控制应用程序，由容器反向的向应用程序注入应用程序所需要的外部资源。

第一步：在项目中添加Unity（通过nuget直接获取）

第二步：Unity简单使用步骤

1创建容器

2注册接口映射

3获取实例

1.1通过代码方式进行注册

2.2通过配置文件方式进行注册

附源码：

web.config配置文件

<?xml version="1.0" encoding="utf-8"?>

<!--

  For more information on how to configure your ASP.NET application, please visit

  http://go.microsoft.com/fwlink/?LinkId=301880

  -->

<configuration>

  <configSections>

    <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->

    <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />

    <section name="RedisConfig" type="MyBolg.Redis.RedisConfigInfo, MyBolg" />

    <section name="unity" type="Microsoft.Practices.Unity.Configuration.UnityConfigurationSection,Microsoft.Practices.Unity.Configuration"/>

  </configSections>

  <unity xmlns="http://schemas.microsoft.com/practces/2010/unity">

    <containers>

      <!--MyContainer为自定义名称 只需要和调用时名称保持一致即可-->

      <container name="MyContainer">

        <!--type为对象的名称,mapTo为注入对象的名称 写法为用逗号隔开两部分，一是类的全部，包括命名空间，二是程序集名称-->

        <register type="MyBolg.Controllers.Ilog,MyBolg" mapTo="MyBolg.Controllers.FileLog,MyBolg">

          <lifetime type="singleton" />

        </register>

      </container>

    </containers>

  </unity>

  <RedisConfig WriteServerList="127.0.0.1:6379" ReadServerList="127.0.0.1:6379" MaxWritePoolSize="60" MaxReadPoolSize="60" AutoStart="true" LocalCacheTime="180" RecordeLog="false">

  </RedisConfig>

  <connectionStrings>

    <add name="DefaultConnection" connectionString="Data Source=(LocalDb)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|\aspnet-MyBolg-20170628095130.mdf;Initial Catalog=aspnet-MyBolg-20170628095130;Integrated Security=True" providerName="System.Data.SqlClient" />

    <add name="mmsql" connectionString="Data Source=bds278166222.my3w.com;Initial Catalog=bds278166222_db;User ID=bds278166222;pwd=wangjun1234" />

  <add name="MyBolgEntities" connectionString="metadata=res://*/EFModel.Model1.csdl|res://*/EFModel.Model1.ssdl|res://*/EFModel.Model1.msl;provider=System.Data.SqlClient;provider connection string="data source=bds278166222.my3w.com;initial catalog=bds278166222_db;user id=bds278166222;password=wangjun1234;MultipleActiveResultSets=True;App=EntityFramework"" providerName="System.Data.EntityClient" /><add name="BolgModel" connectionString="data source=bds278166222.my3w.com;initial catalog=bds278166222_db;user id=bds278166222;password=wangjun1234;MultipleActiveResultSets=True;App=EntityFramework" providerName="System.Data.SqlClient" /></connectionStrings>

  <appSettings>

    <add key="webpages:Version" value="3.0.0.0" />

    <add key="webpages:Enabled" value="false" />

    <add key="ClientValidationEnabled" value="true" />

    <add key="UnobtrusiveJavaScriptEnabled" value="true" />

  </appSettings>

  <system.web>

    <authentication mode="None" />

    <compilation debug="true" targetFramework="4.5.2" />

    <httpRuntime targetFramework="4.5.2" />

    <httpModules>

      <add name="ApplicationInsightsWebTracking" type="Microsoft.ApplicationInsights.Web.ApplicationInsightsHttpModule, Microsoft.AI.Web" />

    </httpModules>

  </system.web>

  <system.webServer>

    <modules>

      <remove name="FormsAuthentication" />

      <remove name="ApplicationInsightsWebTracking" />

      <add name="ApplicationInsightsWebTracking" type="Microsoft.ApplicationInsights.Web.ApplicationInsightsHttpModule, Microsoft.AI.Web" preCondition="managedHandler" />

    </modules>

    <validation validateIntegratedModeConfiguration="false" />

  </system.webServer>

  <runtime>

    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">

      <dependentAssembly>

        <assemblyIdentity name="Microsoft.Owin.Security" publicKeyToken="31bf3856ad364e35" />

        <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />

      </dependentAssembly>

      <dependentAssembly>

        <assemblyIdentity name="Microsoft.Owin.Security.OAuth" publicKeyToken="31bf3856ad364e35" />

        <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />

      </dependentAssembly>

      <dependentAssembly>

        <assemblyIdentity name="Microsoft.Owin.Security.Cookies" publicKeyToken="31bf3856ad364e35" />

        <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />

      </dependentAssembly>

      <dependentAssembly>

        <assemblyIdentity name="Microsoft.Owin" publicKeyToken="31bf3856ad364e35" />

        <bindingRedirect oldVersion="0.0.0.0-3.0.1.0" newVersion="3.0.1.0" />

      </dependentAssembly>

      <dependentAssembly>

        <assemblyIdentity name="Newtonsoft.Json" culture="neutral" publicKeyToken="30ad4fe6b2a6aeed" />

        <bindingRedirect oldVersion="0.0.0.0-6.0.0.0" newVersion="6.0.0.0" />

      </dependentAssembly>

      <dependentAssembly>

        <assemblyIdentity name="System.Web.Optimization" publicKeyToken="31bf3856ad364e35" />

        <bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="1.1.0.0" />

      </dependentAssembly>

      <dependentAssembly>

        <assemblyIdentity name="WebGrease" publicKeyToken="31bf3856ad364e35" />

        <bindingRedirect oldVersion="0.0.0.0-1.5.2.14234" newVersion="1.5.2.14234" />

      </dependentAssembly>

      <dependentAssembly>

        <assemblyIdentity name="System.Web.Helpers" publicKeyToken="31bf3856ad364e35" />

        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />

      </dependentAssembly>

      <dependentAssembly>

        <assemblyIdentity name="System.Web.Mvc" publicKeyToken="31bf3856ad364e35" />

        <bindingRedirect oldVersion="1.0.0.0-5.2.3.0" newVersion="5.2.3.0" />

      </dependentAssembly>

      <dependentAssembly>

        <assemblyIdentity name="System.Web.WebPages" publicKeyToken="31bf3856ad364e35" />

        <bindingRedirect oldVersion="1.0.0.0-3.0.0.0" newVersion="3.0.0.0" />

      </dependentAssembly>

    </assemblyBinding>

  </runtime>

  <entityFramework>

    <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework" />

    <providers>

      <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" />

    </providers>

  </entityFramework>

  <system.codedom>

    <compilers>

      <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:6 /nowarn:1659;1699;1701" />

      <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:14 /nowarn:41008 /define:_MYTYPE=\"Web\" /optionInfer+" />

    </compilers>

  </system.codedom>

</configuration>

　　Ioc控制器

using Microsoft.Practices.Unity;

using Microsoft.Practices.Unity.Configuration;

using System;

using System.Collections.Generic;

using System.Configuration;

using System.Linq;

using System.Web;

using System.Web.Mvc;

namespace MyBolg.Controllers

{

    public class IOCController : Controller

    {

        // GET: IOC

        public ActionResult Index()

        {

            //Unity简单步骤

            //1.创建容器

            //2.注册接口映射

            //3.获取实例

            #region 通过代码方式进行注册

            //IUnityContainer parentContainer = new UnityContainer();

            ////父容器可以创建子容器

            //IUnityContainer childerContainer = parentContainer.CreateChildContainer();

            //parentContainer.RegisterType<Ilog, MyBolg.Controllers.FileLog>();

            ////给datalog在容器中起个名字，以后根据名字得到database

            //parentContainer.RegisterType<Ilog, MyBolg.Controllers.DateLog>("database");

            //Ilog textlog = parentContainer.Resolve<Ilog>();

            //string str = textlog.savaLog("这是文件日志保存的实例");

            //Ilog datalog = parentContainer.Resolve<Ilog>("database");

            //str += datalog.savaLog("---这是数据日志保存的实例");

            //ViewBag.str = str;

            #endregion

            #region 根据配置文件方式进行依赖注入

            IUnityContainer container = new UnityContainer();

            UnityConfigurationSection config = (UnityConfigurationSection)ConfigurationManager.GetSection(UnityConfigurationSection.SectionName);

            config.Configure(container, "MyContainer");

            Ilog log = container.Resolve<DateLog>();

            string str = log.savaLog("这是数据日志保存的内容");

            Ilog logs = container.Resolve<FileLog>();

            str += logs.savaLog("---这是通过文件日志保存的文件");

            ViewBag.str = str;

            #endregion

            return View();

        }

    }

    public interface Ilog {

        string  savaLog(string messgae);

    }

    public class FileLog : Ilog

    {

        public string  savaLog(string messgae)

        {

            return messgae;

        }

    }

    public class DateLog : Ilog

    {

        public string savaLog(string messgae)

        {

            return messgae;

        }

    }

}

　　 view视图

@{

    Layout = null;

}

<!DOCTYPE html>

<html>

<head>

    <meta name="viewport" content="width=device-width" />

    <title>Index</title>

</head>

<body>

    <div> 

        @ViewBag.str

    </div>

</body>

</html>

巴特西

依赖注入Unity框架

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