Spring.net 学习笔记二 依赖注入

Spring.NET 依赖注入  
    <property name="Name" value="jackyong"/>  而property 标签正是用来属性注入

 

值类型的注入是需要使用property 节点的value属性

    <property name="Name" value="jackyong"/>
    <property name="Age" value="25"/>


同理，内联类型可以是循环引用的对象

  <property name="Friend">
          <object type="Jackyong.Spring.NET.Person, Spring.NET">
            <property name="Name" value="jackpeng"/>
            <property name="Age" value="23"/>
            <property name="Friend" ref="person"/>
          </object>
   </property>

 

构造器注入使用constructor-arg标签作为标示，同样具有于属性注入相同的方式，使用name,ref,value作为构造器注入的属性。
<constructor-arg name="argPerson" ref="person"/>
<constructor-arg name="intProp" value="1"/>

ref  是用来表示是关联到哪个object
name 属性是指属性的名称。

    <constructor-arg name="argPerson" ref="person"/>
    <constructor-arg name="intProp" value="1"/>

代码：

 一.定义person 模板

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Jackyong.Spring.NET
{
    public class Person
    {
        public string Name { get; set; }
        public int Age { get; set; }
        public Person Friend { get; set; }

    }
}

 //构造数据

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace Jackyong.Spring.NET
{
    public class PersonInitializtion
    {
        private Person argPerson;
        private int intProp;

        public PersonInitializtion(Person argPerson, int intProp)
        {
            this.argPerson = argPerson;
            this.intProp = intProp;
        }

        public void WriteLine()
        {
            Console.WriteLine(intProp);
            //构造函数注入的整型参数
            Console.WriteLine(string.Format("intProp:{0}", intProp));

            //构造函数注入的Person
            Console.WriteLine(string.Format("argPerson Name:{0}", argPerson.Name));
            Console.WriteLine(string.Format("argPerson Age:{0}", argPerson.Age));

            //内联对象Friend
            Console.WriteLine(string.Format("argPerson Friend Name:{0}", argPerson.Friend.Name));
            Console.WriteLine(string.Format("argPerson Friend Age:{0}", argPerson.Friend.Age));

            //内联对象的循环引用
            Console.WriteLine(string.Format("argPerson Friend Friend Name:{0}", argPerson.Friend.Friend.Name));
            Console.WriteLine(string.Format("argPerson Friend Friend Age:{0}", argPerson.Friend.Friend.Age));

        }

    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Spring.Context;
using Spring.Context.Support;

namespace Jackyong.Spring.NET
{
    class Program
    {
        static void Main(string[] args)
        {
            IApplicationContext ctx = ContextRegistry.GetContext();

            PersonInitializtion initializtion = ctx.GetObject("PersonInitializtion") as PersonInitializtion;

            initializtion.WriteLine();

        }
    }
}

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  
  <configSections>
    <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" />
    </context>

    <objects xmlns="http://www.springframework.net">
      <object id="person" type="Jackyong.Spring.NET.Person,Spring.NET">
        
        <!--属性值类型注入-->
        <property name="Name" value="jackyong"/>
        <property name="Age" value="25"/>

        <!--内联对象注入-->
        <property name="Friend">
          <object type="Jackyong.Spring.NET.Person, Spring.NET">
            <property name="Name" value="jackpeng"/>
            <property name="Age" value="23"/>
            <property name="Friend" ref="person"/>
          </object>
        </property>
      </object>

      <object id="PersonInitializtion" type=" Jackyong.Spring.NET.PersonInitializtion, Spring.NET">
        <!--构造器注入-->
        <constructor-arg name="argPerson" ref="person"/>
        <constructor-arg name="intProp" value="1"/>

      </object>

    </objects>

  </spring>


</configuration>