Spring Framework_学习记录_04

一时失言乱红尘 2022-03-07 10:50 95阅读 0赞

### 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。