JAVA|JAVA 核心笔记 || [xxx] Spring 之 Bean 生命周期 [xxx]Spring之Bean生命周期|

Bean 生命周期

init-method 配置初始化调用方法
destroy-method 配置销毁调用方法

用法

App.java

import com.mj.bean.BeanLife; import com.mj.bean.BeanSay; import com.mj.bean.BeanAnimal; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import org.springframework.context.support.FileSystemXmlApplicationContext; import java.io.FileNotFoundException; public class App {public static void main(String args[]) throws FileNotFoundException{ //ClassPathXmlApplicationContext ApplicationContext context = new ClassPathXmlApplicationContext("Bean.xml"); BeanSay sa = (BeanSay) context.getBean("BeanSay"); sa.setMsg("__Spring"); sa.talk(); //FileSystemXmlApplicationContext ApplicationContext fileContext = new FileSystemXmlApplicationContext("/src/Bean.xml"); BeanSay sa1 = (BeanSay) fileContext.getBean("BeanSay"); sa1.setMsg("=Spring===="); sa1.talk(); ApplicationContext animalContext = new ClassPathXmlApplicationContext("Bean.xml"); BeanAnimal ani =(BeanAnimal) animalContext.getBean("Animal"); ani.setAnimalName("dog"); ani.showAnimal(); BeanAnimal animal =(BeanAnimal) animalContext.getBean("Animal"); animal.setAnimalName("pig"); animal.showAnimal(); // init methoddestroy method BeanLife life = (BeanLife) context.getBean("BeanLife"); life.showName(); } }

BeanLife.java

package com.mj.bean; public class BeanLife { privateString beanName = "BeanName=BeanLife"; public void setBeanName(String beanName) { this.beanName = beanName; }publicvoid showName(){ System.out.println("=Bean Name="+beanName); }public void init(){ System.out.println("[BeanLife init]"); }public void destroy(){ System.out.println("[BeanLife destroy]"); }}

Bean.xml

【JAVA|JAVA 核心笔记 || [xxx] Spring 之 Bean 生命周期】运行