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package com.imooc.demo2;import org.springframework.stereotype.Component;import javax.annotation.PostConstruct;import javax.annotation.PreDestroy;@Component("bean1")public class Bean1 {    @PostConstruct    public void init(){        System.out.println("initBean...");    }    public void say(){        System.out.println("say...");    }    @PreDestroy    public void destory(){        System.out.println("destoryBean...");    }}

package com.imooc.demo2;import org.junit.Test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class SpringDemo2 {    @Test    public void demo1(){        ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");        Bean1 bean1 = (Bean1)applicationContext.getBean("bean1");        bean1.say();        applicationContext.close();    }}

运行结果：initBean...say...destoryBean...

package com.imooc.demo2;import org.springframework.context.annotation.Scope;import org.springframework.stereotype.Component;@Component("bean2")@Scope("prototype")public class Bean2 {}

package com.imooc.demo2;import org.junit.Test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;public class SpringDemo2 {    @Test    public void demo2(){        ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");        Bean2 bean1 = (Bean2)applicationContext.getBean("bean2");        Bean2 bean2 = (Bean2)applicationContext.getBean("bean2");        System.out.println(bean1 == bean2);    }}

运行结果（Ps：默认为单例，所以true）：false

Ps：Bean实例化使用XML方式，属性注入用@注解方式。

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