1、通过@javax.annotation.PostConstruct和@javax.annotation.PreDestroy定义

package com.xiaochuange.platform.spring4;import org.springframework.stereotype.Component;import javax.annotation.PostConstruct;import javax.annotation.PreDestroy;/** * @Desc: * @Auther: spring * @Date: 2018-9-12 14:56 */@Component("initAndDestoryService")public class InitAndDestoryService {    // 销毁之前执行    @PreDestroy    public void methodPreDestroy() {        System.out.println("InitAndDestoryService @PreDestroy invoke...");    }    // 初始化之前执行    @PostConstruct    public void methodPostConstruct() {        System.out.println("InitAndDestoryService @PostConstruct invoke...");    }}

2、通过xml配置文件指定init-method和destroy-method

package com.xiaochuange.platform.spring4;/** * @Desc: * @Auther: spring * @Date: 2018-9-12 15:03 */public class XmlInitAndDestoryService {    private String message;    public String getMessage() {        return message;    }    public void setMessage(String message) {        this.message = message;    }    public void methodInit(){        System.out.println("XmlInitAndDestoryService methodInit invoke..." + message);    }    public void methodDestory(){        System.out.println("XmlInitAndDestoryService methodDestory invoke..." + message);    }}

applicationContext.xml

3、通过bean实现InitializingBean和DisposableBean接口

package com.xiaochuange.platform.spring4;import org.springframework.beans.factory.DisposableBean;import org.springframework.beans.factory.InitializingBean;/** * @Desc: * @Auther: spring * @Date: 2018-9-12 14:27 */public class InitializingBeanAndDisposableBeanService implements InitializingBean, DisposableBean {    private String message;    public String getMessage() {        return message;    }    public void setMessage(String message) {        this.message = message;    }    @Override    public void destroy() throws Exception {        // 销毁时的操作        System.out.println("InitializingBeanAndDisposableBeanService destroy() invoke..." + message);    }    @Override    public void afterPropertiesSet() throws Exception {        // 初始化时的操作        System.out.println("InitializingBeanAndDisposableBeanService afterPropertiesSet() invoke..." + message);    }}

applicationContext.xml

4、测试

package com.xiaochuange.platform.spring4;import org.springframework.context.support.AbstractApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;/** * @Desc: * @Auther: spring * @Date: 2018-9-12 14:45 */public class MainTest {    public static void main(String[] args) {        AbstractApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");        InitializingBeanAndDisposableBeanService personService = (InitializingBeanAndDisposableBeanService) context.getBean("personService");        InitAndDestoryService initAndDestoryService = (InitAndDestoryService) context.getBean("initAndDestoryService");        XmlInitAndDestoryService xmlInitAndDestoryService = (XmlInitAndDestoryService) context.getBean("xmlInitAndDestoryService");        context.registerShutdownHook();        // 输出如下：//        InitAndDestoryService @PostConstruct invoke...//        InitializingBeanAndDisposableBeanService afterPropertiesSet() invoke...123//        XmlInitAndDestoryService methodInit invoke...234//        XmlInitAndDestoryService methodDestory invoke...234//        InitializingBeanAndDisposableBeanService destroy() invoke...123//        InitAndDestoryService @PreDestroy invoke...    }}