Spring Framework_学习记录_08

版权声明： https://blog.csdn.net/qq_38386316/article/details/88715439

1.lifecycles callbacks（生命周期回调）

• DrawingApp.java

package org.zcs.spring;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;
 

public class DrawingApp {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		//BeanFactory factory = new  FileSystemXmlApplicationContext("src/spring.xml");
		//Triangle triangle = new Triangle();
		AbstractApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
		context.registerShutdownHook();
		Triangle triangle = (Triangle)context.getBean("triangle");
		triangle.draw();
	}
}

• Triangle.java

package org.zcs.spring;

import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;

public class Triangle  implements InitializingBean, DisposableBean {
	private Point pointA;
	private Point pointB;
	private Point pointC;
	public Point getPointA() {
		return pointA;
	}

	public void setPointA(Point pointA) {
		this.pointA = pointA;
	}

	public Point getPointB() {
		return pointB;
	}

	public void setPointB(Point pointB) {
		this.pointB = pointB;
	}

	public Point getPointC() {
		return pointC;
	}

	public void setPointC(Point pointC) {
		this.pointC = pointC;
	}
	public void draw () {
	
			System.out.println("This is PointA: (" +pointA.getX()  +"," + pointA.getY() +")");
			System.out.println("This is PointB: (" +pointB.getX()  +"," + pointB.getY() +")");
			System.out.println("This is PointC: (" +pointC.getX()  +"," + pointC.getY() +")");
	}

	@Override
	public void afterPropertiesSet() throws Exception {
		System.out.println("This is My InitializingBean Initializing");
	}

	@Override
	public void destroy() throws Exception {
		// TODO Auto-generated method stub
		System.out.println("This is My DisposableBean methods.");
	}
	public void MyInit() {
		System.out.println("This is my first Initlizing");
	}
	public void CleanUp() {
		System.out.println("This is My last cleanuping");
	}

}

• spring.xml

<?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.xsd"
      default-init-method="MyInit"  default-destroy-method="CleanUp"  >
 
   
   	<bean id = "triangle" class= "org.zcs.spring.Triangle"  autowire= "byName" init-method="MyInit" destroy-method="CleanUp">
 		  
 		 
 		
   	</bean>
   	
   	<bean id= "pointA" class = "org.zcs.spring.Point">
   		<property name="x"  value = "0"></property>
   		<property name="y"  value = "0"></property>
   	</bean>
   	<bean id= "pointB" class = "org.zcs.spring.Point">
		<property name="x"  value = "20"></property>
		<property name="y"  value = "0"></property>
	</bean>

 	<bean id= "pointC" class = "org.zcs.spring.Point">
		   <property name="x"  value = "0"></property>
		   <property name="y"  value = "20"></property>
   	</bean>
 
   	
  </beans>
 

2.学习总结

• 主要学习了AbstractApplicationContext下的钩子函数的生命周期。
• 在bean中的使用。
• 在xml中的使用
• 在类继承中的使用
• 唯一遇到的问题是在xml中写默认的方法的时候把Destroy写错了，一直在报错。