第二节：原型模式的应用

一、原型模式在 Spring 框架中源码分析

　　1、Spring 中原型 bean 的创建，就是原型模式的应用；

　　2、代码分析+Debug 源码

　　　　

 　　3、代码

public class Monster {

    private Integer id = 10 ;
    private String nickname = "牛魔王";
    private String skill = "芭蕉扇";
    public Monster() {
        
        System.out.println("monster 创建..");
    }
    public Monster(Integer id, String nickname, String skill) {
        //System.out.println("Integer id, String nickname, String skill被调用");
        this.id = id;
        this.nickname = nickname;
        this.skill = skill;
    }
    
    public Monster( String nickname, String skill,Integer id) {
        
        this.id = id;
        this.nickname = nickname;
        this.skill = skill;
    }
    public Integer getId() {
        return id;
    }
    public void setId(Integer id) {
        this.id = id;
    }
    public String getNickname() {
        return nickname;
    }
    public void setNickname(String nickname) {
        this.nickname = nickname;
    }
    public String getSkill() {
        return skill;
    }
    public void setSkill(String skill) {
        this.skill = skill;
    }
    @Override
    public String toString() {
        return "Monster [id=" + id + ", nickname=" + nickname + ", skill="
                + skill + "]";
    }
    
    
}
-------------------------Test类---------------------
public class ProtoType {

    public static void main(String[] args) {
        ApplicationContext applicationContext = new ClassPathXmlApplicationContext("beans.xml");
        // 获取monster[通过id获取monster]
        Object bean = applicationContext.getBean("id01");
        System.out.println("bean" + bean); // 输出 "牛魔王" .....
        
        Object bean2 = applicationContext.getBean("id01");
        
        System.out.println("bean2" + bean2); //输出 "牛魔王" .....

        System.out.println(bean == bean2); // false
        
        // ConfigurableApplicationContext
    }

}

　　配置文件：

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
    <!-- 这里我们的 scope="prototype" 即 原型模式来创建 -->
    <bean id="id01" class="com.java.spring.bean.Monster"
          scope="prototype"/>
</beans>

二、