Spring Framework_学习记录_04

版权声明： https://blog.csdn.net/qq_38386316/article/details/88604945

1.注入对象

• DrawingApp.java

package org.zcs.spring;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.ApplicationContext;
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();
		ApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");
		Triangle triangle = (Triangle)context.getBean("triangle");
		triangle.draw();
	}
}

• Triangle.java

package org.zcs.spring;

public class Triangle {
	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 Point A: (" +getPointA().getX()  +"," + (getPointA().getY()) +")");
		System.out.println("This is Point B: (" +getPointB().getX()  +"," + (getPointB().getY()) +")");
		System.out.println("This is Point C: (" +getPointC().getX()  +"," + (getPointC().getY()) +")");
		 
		
	}
}

• Point.java

package org.zcs.spring;

public class Point {
	private int x;
	private int y;
 
	
	public int getX() {
		return x;
	}
	public void setX(int x) {
		this.x = x;
	}
	public int getY() {
		return y;
	}
	public void setY(int y) {
		this.y = y;
	}
 
	
}

• 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">
   
   	<bean id = "triangle" class= "org.zcs.spring.Triangle" >
 		 <property name="pointA" ref = "zeroPoint"></property>
 		 
 		 <property name="pointB" ref = "twoPoint"></property>
 		 
 		 <property name="pointC" ref = "threePoint"></property>
   	</bean>
   	<bean id= "zeroPoint" class = "org.zcs.spring.Point">
   		<property name="x"  value = "0"></property>
   		<property name="y"  value = "0"></property>
   	</bean>
   	<bean id= "twoPoint" class = "org.zcs.spring.Point">
   		<property name="x"  value = "20"></property>
   		<property name="y"  value = "0"></property>
   	</bean>
   	<bean id= "threePoint" class = "org.zcs.spring.Point">
   		<property name="x"  value = "20"></property>
   		<property name="y"  value = "0"></property>
   	</bean>
   	
  </beans>

2.学习笔记

• 学习了如何使用bean将对象赋值并注入数据，
• 再注入对象，得出相应的数值。