SpringIOC整理

1 package demoinfo.spring.ioc;
2 
3 /**
4  * 设备接口
5  */
6 public interface IDeviceWriter {     
7     public void saveToDevice();     
8 }    

 1 package demoinfo.spring.ioc;
 2 
 3 /**
 4  * 软盘类
 5  */
 6 public class FloppyWriter implements IDeviceWriter {     
 7     public void saveToDevice() {     
 8         System.out.println("储存至软盘…");     
 9     }     
10 } 

 1 package demoinfo.spring.ioc;
 2 
 3 /**
 4  * USB类
 5  */
 6 public class UsbDiskWriter implements IDeviceWriter {  
 7     public void saveToDevice() {  
 8         System.out.println("储存至移动硬盘…");  
 9     }  
10 } 

 1 package demoinfo.spring.ioc;
 2 
 3 /**
 4  * 磁盘业务的业务JavaBean类
 5  */
 6 public class BusinessBean {  
 7     private IDeviceWriter writer;  
 8   
 9     public void setDeviceWriter(IDeviceWriter writer) {  
10         this.writer = writer;  
11     }  
12   
13     public IDeviceWriter getDeviceWriter() {  
14         return writer;  
15     }  
16   
17     public void save() {  
18         if (writer == null) {  
19             throw new RuntimeException("DeviceWriter needed...");  
20         }  
21         writer.saveToDevice();  
22     }  
23 } 

 1 xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:tx="http://www.springframework.org/schema/tx"
 4     xmlns:aop="http://www.springframework.org/schema/aop" xmlns:p="http://www.springframework.org/schema/p"
 5     xmlns:context="http://www.springframework.org/schema/context"
 6     xsi:schemaLocation="http://www.springframework.org/schema/beans 
 7     http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
 8     http://www.springframework.org/schema/context   
 9      http://www.springframework.org/schema/context/spring-context-3.0.xsd   
10      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd 
11      http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd"
12      default-autowire="byName">
13 
14     <bean id="floppy" class="demoinfo.spring.ioc.FloppyWriter"/>    
15     <bean id="usb" class="demoinfo.spring.ioc.UsbDiskWriter"/>    
16             
17     <bean id="businessBean"      
18           class="demoinfo.spring.ioc.BusinessBean">      
19         <property name="deviceWriter">    
20             <ref bean="usb"/>    
21         property>      
22     bean>      
23 
24 beans>

 1 package demoinfo.spring.ioc;
 2 
 3 import org.springframework.context.ApplicationContext;
 4 import org.springframework.context.support.ClassPathXmlApplicationContext;
 5 
 6 public class SpringDemo {     
 7     public static void main(String[] args) {
 8         //获得Spring中定义的Bean实例(对象)
 9         ApplicationContext cOntext= new ClassPathXmlApplicationContext(     
10         "classpath:demoinfo/spring/ioc/businessFactoryConfig.xml ");     
11         BusinessBean business = (BusinessBean) context.getBean("businessBean");     
12         business.save();
13     }     
14 }