SpringAnnotation注解之@PreDestroy，@PostConstruct，@Scope

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package com.fz.annotation.service;

import javax.annotation.PostConstruct;

import javax.annotation.PreDestroy;

import javax.annotation.Resource;

import org.springframework.context.annotation.Scope;

import org.springframework.stereotype.Component;

import com.fz.annotation.dao.UserDao;

import com.fz.xml.entity.User;

@Service("userService")

@Scope("prototype")

public class UserService {

    private UserDao userDao;

    public void userAdd(){

        User user = new User();

        user.setUsername("zhangsan");

        user.setPassword("zhangsan");

        userDao.userAdd(user);

    }

    public UserDao getUserDao() {

        return userDao;

    }

    @Resource(name="userDaoImpl")

    public void setUserDao(UserDao userDao) {

        this.userDao = userDao;

    }

    @PostConstruct

    public void init(){

        System.out.println("init...");

    }

    @PreDestroy

    public void destroy(){

        System.out.println("destroy...");

    }

}

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<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xmlns:context="http://www.springframework.org/schema/context"

    xsi:schemaLocation="http://www.springframework.org/schema/beans

           http://www.springframework.org/schema/beans/spring-beans-3.0.xsd

           http://www.springframework.org/schema/context

           http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <context:annotation-config/>

    <context:component-scan base-package="com.fz.annotation"></context:component-scan>

</beans>

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@Test

public void getProperties(){

    ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext_annotation.xml");

    UserService userService = (UserService) ctx.getBean("userService");

    UserService userService1 = (UserService) ctx.getBean("userService");

    userService.userAdd();

    System.out.println(userService == userService1);

    ctx.destroy();

}