项目结构：

/spring_1400_p名称空间/src/com/b510/app/test/SpringTest.java

1 package com.b510.app.test;  2  3 import org.springframework.context.ApplicationContext;  4 import org.springframework.context.support.ClassPathXmlApplicationContext;  5  6 import com.b510.service.AnimalService;  7  8 public class SpringTest {
    9     public static void main(String[] args) {
   10         ApplicationContext act = new ClassPathXmlApplicationContext("beans.xml"); 11         // 获取id为animaleServiceOfDog的Bean 12         AnimalService animalServiceOfDog = (AnimalService) act 13                 .getBean("animaleServiceOfDog"); 14         animalServiceOfDog.getInfo(); 15         // 获取id为animaleServiceOfCat的Bean 16         AnimalService animalServiceOfCat = (AnimalService) act 17                 .getBean("animaleServiceOfCat"); 18         animalServiceOfCat.getInfo(); 19     } 20 }

/spring_1400_p名称空间/src/com/b510/service/AnimalService.java

1 package com.b510.service;  2  3 /**  4  * 动物抽象类  5  *  6  * @author Hongten  7  *  8  */  9 public interface AnimalService {
   10 11     /** 12      * 获取相关信息 13 */ 14     public abstract void getInfo(); 15 16 }

/spring_1400_p名称空间/src/com/b510/service/MeatService.java

1 package com.b510.service;  2  3 /**  4  * 定义抽象类MeatService肉类  5  *  6  * @author Hongten  7  *  8  */  9 public interface MeatService {
   10 11     /** 12      * 定义方法whatMeat 13      * 14      * @return 返回一个字符串 15 */ 16     public abstract String whatMeat(); 17 }

/spring_1400_p名称空间/src/com/b510/service/impl/CatServiceBean.java

1 package com.b510.service.impl;  2  3 import com.b510.service.AnimalService;  4 import com.b510.service.MeatService;  5  6 /**  7  * 定义猫类实现AnimaleService抽象类  8  *  9  * @author Hongten 10  * 11  */ 12 public class CatServiceBean implements AnimalService {
   13     private int age; 14     private MeatService meatService; 15 16     public int getAge() {
   17         return age; 18     } 19 20     public void setAge(int age) {
   21         this.age = age; 22     } 23 24     @Override 25     public void getInfo() {
   26         System.out.println("我是猫，我的年龄是:"+age+",我很喜欢吃"+meatService.whatMeat()); 27     } 28 29     public MeatService getMeatService() {
   30         return meatService; 31     } 32 33     public void setMeatService(MeatService meatService) {
   34         this.meatService = meatService; 35     } 36     37 38 }

/spring_1400_p名称空间/src/com/b510/service/impl/DogServiceBean.java

1 package com.b510.service.impl;  2  3 import com.b510.service.AnimalService;  4 import com.b510.service.MeatService;  5  6 /**  7  * 定义DogServiceBean类  8  *  9  * @author Hongten 10  * 11  */ 12 public class DogServiceBean implements AnimalService {
   13     private int age; 14     private MeatService meatService; 15 16     public MeatService getMeatService() {
   17         return meatService; 18     } 19 20     public void setMeatService(MeatService meatService) {
   21         this.meatService = meatService; 22     } 23 24     public int getAge() {
   25         return age; 26     } 27 28     public void setAge(int age) {
   29         this.age = age; 30     } 31 32     @Override 33     public void getInfo() {
   34         System.out.println("我是狗，我的年龄是:" + age + ",我很喜欢吃" 35                 + meatService.whatMeat()); 36     } 37 38 }

/spring_1400_p名称空间/src/com/b510/service/impl/FishServiceBean.java

1 package com.b510.service.impl;  2  3 import com.b510.service.MeatService;  4  5 /**  6  * 定义鱼肉实现MeatService抽象类  7  *  8  * @author Hongten  9  * 10  */ 11 public class FishServiceBean implements MeatService {
   12 13     @Override 14     public String whatMeat() {
   15         return "鱼肉"; 16     } 17 18 }

/spring_1400_p名称空间/src/com/b510/service/impl/PorkServiceBean.java

1 package com.b510.service.impl;  2  3 import com.b510.service.MeatService;  4  5 /**  6  * 定义猪肉实现MeatService抽象类  7  *  8  * @author Hongten  9  * 10  */ 11 public class PorkServiceBean implements MeatService {
   12 13     @Override 14     public String whatMeat() {
   15         return "猪肉"; 16     } 17 18 }

/spring_1400_p名称空间/src/beans.xml

1 
       2     
       3 
     
        7     
        8     
        9     
       11     
       13 
     

使用p名称空间没有标准的XML格式灵活，如果某个Bean的属性名称是以"-ref"结尾的，那么采用p名称空间定义是就会出现错误，采用标准的XML格式是

不会出现这样的错误滴！！！

运行结果：

 

1 2012-3-12 12:58:51 org.springframework.context.support.AbstractApplicationContext prepareRefresh  2 信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@c1b531: display name [org.springframework.context.support.ClassPathXmlApplicationContext@c1b531]; startup date [Mon Mar 12 12:58:51 CST 2012]; root of context hierarchy  3 2012-3-12 12:58:51 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions  4 信息: Loading XML bean definitions from class path resource [beans.xml]  5 2012-3-12 12:58:54 org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory  6 信息: Bean factory for application context [org.springframework.context.support.ClassPathXmlApplicationContext@c1b531]: org.springframework.beans.factory.support.DefaultListableBeanFactory@111a775  7 2012-3-12 12:58:54 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons  8 信息: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@111a775: defining beans [meatServiceOfFish,meatServiceOfPork,animaleServiceOfDog,animaleServiceOfCat]; root of factory hierarchy  9 我是狗，我的年龄是:12,我很喜欢吃猪肉 10 我是猫，我的年龄是:3,我很喜欢吃鱼肉