<?xml version="1.0" encoding="GBK"?>

   
   
      
      
      
      
   
   
   
      
      
      
      
   

package org.crazyit.app.service;
public interface Being
{
   public void testBeing();
}

package org.crazyit.app.service.impl;
import org.crazyit.app.service.*;
public class Cat implements Being
{
   private String msg;
   // msg的setter方法
   public void setMsg(String msg)
   {
      this.msg = msg;
   }
   // 实现接口必须实现的testBeing方法
   public void testBeing()
   {
      System.out.println(msg +
        "，猫喜欢吃老鼠");
   }
}

package org.crazyit.app.service.impl;
import org.crazyit.app.service.*;
public class Dog implements Being
{
   private String msg;
   // msg的setter方法
   public void setMsg(String msg)
   {
      this.msg = msg;
   }
   // 实现接口必须实现的testBeing()方法
   public void testBeing()
   {
      System.out.println(msg +
        "，狗爱啃骨头");
   }
}

package org.crazyit.app.factory;
import org.crazyit.app.service.impl.*;
import org.crazyit.app.service.*;
public class BeingFactory
{
  // 返回Being实例的静态工厂方法
  // arg参数决定返回哪个Being类的实例
  public static Being getBeing(String arg)
  {
    // 调用此静态方法的参数为dog，则返回Dog实例
    if (arg.equalsIgnoreCase("dog"))
    {
      return new Dog();
    }
    // 否则返回Cat实例
    else
    {
      return new Cat();
    }
  }
}

package lee;
import org.springframework.context.*;
import org.springframework.context.support.*;
import org.crazyit.app.service.*;
public class SpringTest
{
  public static void main(String[] args)
  {
    // 以类加载路径下的配置文件创建ClassPathResource实例
    ApplicationContext ctx = new
      ClassPathXmlApplicationContext("beans.xml");
    Being b1 = ctx.getBean("dog" , Being.class);
    b1.testBeing();
    Being b2 = ctx.getBean("cat" , Being.class);
    b2.testBeing();
  }
}