.NET Unity IOC框架的使用实例,具体内容如下
1.IOC简介
IOC(Inversion of Control), 控制反转
DI (Dependency Injection),依赖注入
IOC的基本概念是:不创建对象,但是描述创建它们的方式。在代码中不直接与对象和服务连接,但在配置文件中描述哪一个组件需要哪一项服务。容器负责将这些联系在一起。
2.Unity引入
3.创建单例模式容器类
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using Microsoft.Practices.Unity; using Microsoft.Practices.Unity.Configuration; using System; using System.Collections.Generic; using System.Configuration; using System.Linq; using System.Text; using System.Threading.Tasks; namespace UnityIocTest { /// <summary> /// Unity IOC单例模式 /// </summary> public class UnitySingleton { //单例 private static UnitySingleton instance; //ioc容器 public IUnityContainer container; //获取单例 public static UnitySingleton getInstance() { if (instance == null || instance.container == null ) { string configFile = "Unity.config" ; var fileMap = new ExeConfigurationFileMap { ExeConfigFilename = configFile }; //从config文件中读取配置信息 Configuration configuration = ConfigurationManager.OpenMappedExeConfiguration(fileMap, ConfigurationUserLevel.None); //获取指定名称的配置节 UnityConfigurationSection section = (UnityConfigurationSection)configuration.GetSection( "unity" ); instance = new UnitySingleton() { //container = new UnityContainer().LoadConfiguration((UnityConfigurationSection)ConfigurationManager.GetSection("unity"), "MyContainer") container = new UnityContainer().LoadConfiguration(section, "MyContainer" ) //container = new UnityContainer() }; //instance.container.RegisterType<IExampleClass, ExampleClass>(); } return instance; } //IOC注入实体 public static T GetInstanceDAL<T>() { return getInstance().container.Resolve<T>(); } } } |
此处是将Unity config配置单独成一个文件,方便管理。
4.添加IOC相关类
接口类
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public interface IExampleClass { void DoHelloWord(); } |
具体实现类
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public class ExampleClass : IExampleClass { public void DoHelloWord() { Console.WriteLine( "Hello Word!" ); } } |
实现类扩展
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public class DIExampleClass { //属性注入 [Dependency] public IExampleClass example { get ; set ; } private IExampleClass testInject; public void DoWork() { example.DoHelloWord(); testInject.DoHelloWord(); } //方法注入 [InjectionMethod] public void Initialize(IExampleClass instance) { testInject = instance; } } |
5.添加配置文件Unity.config
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<? xml version = "1.0" encoding = "utf-8" ?> < configuration > < configSections > < section name = "unity" type = "Microsoft.Practices.Unity.Configuration.UnityConfigurationSection,Microsoft.Practices.Unity.Configuration" /> </ configSections > < unity > <!--定义类型别名--> < aliases > < add alias = "IExampleClass" type = "UnityIocTest.IExampleClass,UnityIocTest" /> < add alias = "ExampleClass" type = "UnityIocTest.ExampleClass,UnityIocTest" /> </ aliases > <!--容器--> < container name = "MyContainer" > <!--映射关系--> <!--<register type="IExampleClass" mapTo="ExampleClass"></register>--> < register type = "UnityIocTest.IExampleClass,UnityIocTest" mapTo = "UnityIocTest.ExampleClass,UnityIocTest" ></ register > </ container > </ unity > </ configuration > |
6.函数调用
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class Program { static void Main( string [] args) { //var dao = UnitySingleton.GetInstanceDAL<IExampleClass>(); var dao = UnitySingleton.GetInstanceDAL<DIExampleClass>(); dao.DoWork(); Console.ReadLine(); } } |
7.结果显示
Hello Word!
Hello Word!
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://www.cnblogs.com/pengdylan/p/6371724.html