【spring 的 init and destory 方法】
【spring 的 init and destory 方法】
<?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:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
<bean id="dao" class="com.demo.dao.PersonDAOImpl"
init-method="add" destroy-method="cool"
></bean>
</beans>
-----------------------------------------
【ReadApplicationContext】
public class ReadApplicationContext {
public static void main(String[] args) {
//spring 配置文件的路径,从类路径下加载
String url="applicationContext.xml";
//String url1="ioc/applicationContext.xml";
//读取spring 的配置文件,获取唯一对象名
ApplicationContext act= new ClassPathXmlApplicationContext(url);
//ClassPathXmlApplicationContext act= new ClassPathXmlApplicationContext(url);
//从spring容器中获取boy 的对象
PersonDAO dao1=(PersonDAO)act.getBean("dao");
dao1.save();
//System.out.println("dao1"+dao1);
//act.close();
}
}
------------------------------------
【PersonDAOImpl】
public class PersonDAOImpl implements PersonDAO {
public PersonDAOImpl(){
System.out.println(1);
}
public void save(){
System.out.println("save");
}
//初始化
public void add()
{
System.out.println("==add==");
//销毁的方法
}
public void cool()
{ System.out.println("----cool----");
}
}
-------------------------------------
【PersonDAO】
package com.demo.dao;
public interface PersonDAO {
public void save();
}