.NET中实现IOC有很多方式，比如：Unity、Ninject、Autofac、MEF
Ninject的实现参考《Pro ASP.NET MVC3.5 FrameWork》
下面给出的是Unity的实现，结合配置文件实现的IOC。
配置示例：
<?xml version="1.0"?>
<configuration>
<configSections>
<section name="unity"
type="Microsoft.Practices.Unity.Configuration.UnityConfigurationSection,Microsoft.Practices.Unity.Configuration"/>
</configSections>
<unity>
<typeAliases>
<!--管理对象生命周期的三种方式-->
<!--创建单例实例-->
<typeAlias alias="singleton"
type="Microsoft.Practices.Unity.ContainerControlledLifetimeManager,
Microsoft.Practices.Unity" />
<!--只可以保持对象的弱引用-->
<typeAlias alias="external"
type="Microsoft.Practices.Unity.ExternallyControlledLifetimeManager,
Microsoft.Practices.Unity" />
<!--在同一个线程返回同一个对象实例，不同线程对象实例不相同 -->
<typeAlias alias="perThread"
type="Microsoft.Practices.Unity.PerThreadLifetimeManager,
Microsoft.Practices.Unity" />
<!--别名-->
<typeAlias alias="ICustomerInfo"
type="Yintai.ERP.Service.Customer.Interface.ICustomerInfo,Yintai.ERP.Service.Customer.Interface"
/>
<typeAlias alias="CustomerInfo"
type="Yintai.ERP.Service.CustomerInfo.CustomerInfoService,Yintai.ERP.Service.CustomerInfo"
/>
</typeAliases>
<containers>
<container name="ContainerService">
<!--注册类型-->
<register type="ICustomerInfo" mapTo="CustomerInfo">
<lifetime type="singleton"/>
</register>
</container>
</containers>
</unity>
</configuration>
C#代码:
private ICSWorkBusiness cSWorkBusiness=null;
/// <summary>
/// 构造函数
/// </summary>
public CSWorkService()
{
cSWorkBusiness=ServiceBusContainer.Instance.Container.Resolve<ICSWorkBusiness>();
}
更多阅读资料：
微软企业库Unity学习笔记(一)：http://www.cnblogs.com/rush/archive/2011/02/12/EntlibUnity.html
微软企业库Unity学习笔记(二)：http://www.cnblogs.com/rush/archive/2011/04/16/Unity.html
补充2017-8-8：
InjectionConstructor --构造函数注入（多重载构造函数）
InjectionMethod --方法注入
Dependency --属性注入
Dependency(“name”) --给属性命名
项目中的代码结构：
指定类型：
配置映射关系：
应用层==》
定义IOC容器：
容器代码：
using System;
using System.Configuration;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Practices.Unity;
using Microsoft.Practices.Unity.Configuration;
namespace Wede.ERP.Service.CRM
{
public sealed class CRMServiceContainer
{
private static CRMServiceContainer _instance;
private string configFile = "";
private string _ContainerName = "ContainerService";
static readonly object lockobj = new object();
private static IUnityContainer crmServiceUnityContainer;
/// <summary>
/// 构造函数，得到Unit配置文件
/// </summary>
private CRMServiceContainer()
{
configFile = Wede.ERP.Config.BaseConfig.GetServiceCrmUnityConfigPath;
if (string.IsNullOrEmpty(configFile))
{
throw new Exception(Wede.ERP.Config.BaseConfig.ErrorMessage);
}
else
{
configFile = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory,configFile);
}
}
/// <summary>
/// 单例方式实例化
/// </summary>
public static CRMServiceContainer Instance
{
get
{
lock (lockobj)
{
if (_instance == null)
{
_instance = new CRMServiceContainer();
}
return _instance;
}
}
}
private object lockObj = new object();
/// <summary>
/// 初始化Unity的IoC容器对象
/// </summary>
public IUnityContainer Container
{
get
{
if (crmServiceUnityContainer == null)
{
lock (lockObj)
{
crmServiceUnityContainer = new UnityContainer();
ExeConfigurationFileMap basicFileMap = new ExeConfigurationFileMap
{
ExeConfigFilename = configFile
};
UnityConfigurationSection section = (UnityConfigurationSection)ConfigurationManager
.OpenMappedExeConfiguration(basicFileMap, ConfigurationUserLevel.None)
.GetSection("unity");
section.Configure(crmServiceUnityContainer, _ContainerName);
}
}
return crmServiceUnityContainer;
}
}
public T Resolve<T>()
{
return Container.Resolve<T>();
}
}
}
应用层==》服务层应用：
原文地址：https://www.cnblogs.com/zhaow/p/9754515.html