Spring.Net的IOC入门

1.构造器注入

namespace Spring.Net
{
    class Program
    {
        //构造器注入
        static void Main(string[] args)
        {
            IApplicationContext ctx = ContextRegistry.GetContext();
            //通过容器创建对象
            IUser _user = ctx.GetObject("User") as IUser;
            _user.Show();
            Console.ReadKey();
        }
    }


    public interface IUser
    {
        string Name { get; set; }
        void Show();
    }

    public class User : IUser
    {
        public string Name { get; set; }
        public void Show()
        {
            Console.WriteLine("我是User的Show方法");
        }
    }
}

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <!--一定要在紧跟着configuration下面添加-->
  <configSections>
    <!--跟下面Spring.Net节点配置是一一对应关系-->
    <sectionGroup name="spring">
      <section name="context" type="Spring.Context.Support.ContextHandler, Spring.Core"/>
      <section name="objects" type="Spring.Context.Support.DefaultSectionHandler, Spring.Core" />
    </sectionGroup>
  </configSections>
  <spring>
    <context>
      <resource uri="config://spring/objects"></resource>
    </context>  
    <objects>
      <!--name 必须要唯一的，type=类的全名称，所在的程序集-->
      <object name="User" type="Spring.Net.User, Spring.Net">  </object> 
    </objects>
  </spring>
  
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
    </startup>
</configuration>

2.属性及构造器注入

namespace Spring.Net
{
    class Program
    {
        static void Main(string[] args)
        {
            IApplicationContext ctx = ContextRegistry.GetContext();
            //通过容器创建对象
            IUser _user = ctx.GetObject("User") as IUser;
            IPeople _people = ctx.GetObject("People") as IPeople;
            Test _test = ctx.GetObject("Test") as Test;
            Console.WriteLine(_user.Name);
            Console.WriteLine(_user.Age);
            Console.WriteLine("--------------------------------------------");
            Console.WriteLine(_people.Man.Name);
            Console.WriteLine(_people.Man.Age);
            Console.WriteLine("--------------------------------------------");
            Console.WriteLine(_test.Name);
            Console.WriteLine(_test.Age);
            Console.ReadKey();
        }
    }


    public interface IUser
    {
        string Name { get; set; }
        int Age { get; set; }
        void Show();
    }

    public class User : IUser
    {
        public string Name { get; set; }
        public int Age { get; set; }
        public void Show()
        {
            Console.WriteLine("我是User的Show方法");
        }
    }

    public interface IPeople
    {
        IUser Man { get; set; }
    }

    public class People : IPeople
    {
        public IUser Man { get; set; }
    }

    public class Test
    {
        public string Name{get;set;}
        public int Age{get;set;}
        public Test(string name, int age)
        {
            Name = name;
            Age = age;
        }
    }
}

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <!--一定要在紧跟着configuration下面添加-->
  <configSections>
    <!--跟下面Spring.Net节点配置是一一对应关系-->
    <sectionGroup name="spring">
      <section name="context" type="Spring.Context.Support.ContextHandler, Spring.Core"/>
      <section name="objects" type="Spring.Context.Support.DefaultSectionHandler, Spring.Core" />
    </sectionGroup>
  </configSections>
  <spring>
    <context>
      <resource uri="config://spring/objects"></resource>
    </context>  
    <objects>

      <object name="User" type="Spring.Net.User, Spring.Net">
        <!--01属性注入-值类型-->
        <property name="Name" value="Linq"></property>
        <property name="Age" value="25"></property>
      </object>

      <object name="People" type="Spring.Net.People, Spring.Net">
        <!--02属性注入-引用类型-->
        <property name="Man" ref="User"></property>
      </object>

      <object name="Test" type="Spring.Net.Test, Spring.Net">
        <!--03构造函数注入-->
        <constructor-arg name="name" value="config配置"></constructor-arg>
        <constructor-arg name="age" value="25"></constructor-arg>
      </object>
    </objects>
  </spring>
  
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
    </startup>
</configuration>

3.方法注入

namespace Spring.Net
{
    class Program
    {
        static void Main(string[] args)
        {
            IApplicationContext ctx = ContextRegistry.GetContext();   
            ObjectFactory dao = (ObjectFactory)ctx.GetObject("objectFactory");
            //查询方法注入
            //查询方法注入就利用了这些功能。个人感觉查询方法注入类似抽象工厂，
            //为之不同的是，可以不用写抽象的实现代码，通过配置文件动态的切换组件。
            dao.CreatePersonDao().Save();
            //事件注入
            Door door = (Door)ctx.GetObject("door");
            door.OnOpen("Opening!");
            Console.WriteLine();
            Console.Read();
        }

    }

    public abstract class ObjectFactory
    {
        //或者可以是一个虚方法    
        public abstract PersonDao CreatePersonDao();
    }

    public class PersonDao
    {
        public void Save()
        {
            Console.WriteLine("保存数据");
        }
    }

    //先定义一个委托
    public delegate string OpenHandler(string arg);

    public class Door
    {
        public event OpenHandler OpenTheDoor;

        public void OnOpen(string arg)
        {
            //调用事件
            if (OpenTheDoor != null)
            {
                Console.WriteLine(OpenTheDoor(arg));
            }
        }
    }

    public class Men
    {
        public string OpenThisDoor(string arg)
        {
            return "参数是：" + arg;
        }
    }
}

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <!--一定要在紧跟着configuration下面添加-->
  <configSections>
    <!--跟下面Spring.Net节点配置是一一对应关系-->
    <sectionGroup name="spring">
      <section name="context" type="Spring.Context.Support.ContextHandler, Spring.Core"/>
      <section name="objects" type="Spring.Context.Support.DefaultSectionHandler, Spring.Core" />
    </sectionGroup>
  </configSections>
  <spring>
    <context>
      <resource uri="config://spring/objects"></resource>
    </context>  
    
    <objects>
      <!--查询方法-->
      <object id="personDao" type="Spring.Net.PersonDao, Spring.Net" singleton="false"/>
      
      <object id="objectFactory" type="Spring.Net.ObjectFactory, Spring.Net">
        <lookup-method name="CreatePersonDao" object="personDao"/>
      </object>
      
      <!--事件注入-->
      <object id="men" type="Spring.Net.Men, Spring.Net">
        <listener event="OpenTheDoor" method="OpenThisDoor">
          <ref object="door"/>
        </listener>
      </object>
      
      <object id="door" type="Spring.Net.Door, Spring.Net" />
    </objects>
  </spring>
  
    <startup> 
        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
    </startup>
</configuration>