spring的第一个例子

左手的ㄟ右手 2022-09-25 01:20 183阅读 0赞

java

Performer.java

package com.springinaction.springidol;
    
    /**
     * 表演者抽象方法
     * @author WuJieJecket
     *
     */
    public interface Performer {
    	public void perform();
    
    }

Juggler.java

package com.springinaction.springidol;
    
    /**
     * idol：偶像
     * juggler:杂技师
     * @author WuJieJecket
     *
     */
    public class Juggler implements Performer {
    	private int bearBags=3;
    	
    	//无参构造方法
    	public Juggler(){
    		
    	}
    	
    	//传入球数
    	public Juggler(int beanBags){
    		this.bearBags=beanBags;
    	}
    	
    	public void perform() {
    		// TODO Auto-generated method stub
    		System.out.println("JUGGLING(杂耍) "+bearBags+" BEANBAGS(豆袋子)");
    	}
    
    }

配置文件

spring-idol.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:context="http://www.springframework.org/schema/context"  
            xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd  
                    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd"> 
    	<bean id="duke" class="com.springinaction.springidol.Juggler"></bean>
    	
    	
    </beans>

文件结构

![Center][]

测试方法

/**
    	 * spring-idol.xml
    	 */
    	@Test
    	public void testJuggler(){
    		//从类路径
    		ApplicationContext ctx=new ClassPathXmlApplicationContext("com/springinaction/springidol/spring-idol.xml");
    		Performer performer=(Performer) ctx.getBean("duke");
    		performer.perform();
    	}

[Center]: /images/20220719/20db90bcb79c44a7ba8bb827895c57d4.png