SPRING IN ACTION 第4版笔记-第一章-002-DI介绍

一、

1.knight.xml

 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"
 4   xsi:schemaLocation="http://www.springframework.org/schema/beans 
 5       http://www.springframework.org/schema/beans/spring-beans.xsd">
 6 
 7   <bean id="knight" class="chapter01.sia.knights.BraveKnight">
 8     <constructor-arg ref="quest" />
 9   </bean>
10 
11   <bean id="quest" class="chapter01.sia.knights.SlayDragonQuest">
12     <constructor-arg value="#{T(System).out}" />
13   </bean>
14 
15 </beans>

2.Knight

1 package chapter01.sia.knights;
2 
3 public interface Knight {
4 
5   void embarkOnQuest();
6 
7 }

 

3.BraveKnight

 1 package chapter01.sia.knights;
 2   
 3 public class BraveKnight implements Knight {
 4 
 5   private Quest quest;
 6 
 7   public BraveKnight(Quest quest) {
 8     this.quest = quest;
 9   }
10 
11   public void embarkOnQuest() {
12     quest.embark();
13   }
14 
15 }

 

4.SlayDragonQuest

 1 package chapter01.sia.knights;
 2 
 3 import java.io.PrintStream;
 4 
 5 public class SlayDragonQuest implements Quest {
 6 
 7   private PrintStream stream;
 8 
 9   public SlayDragonQuest(PrintStream stream) {
10     this.stream = stream;
11   }
12 
13   public void embark() {
14     stream.println("Embarking on quest to slay the dragon!");
15   }
16 
17 }

5.

 1 package chapter01.sia.knights;
 2 
 3 import org.springframework.context.support.
 4                    ClassPathXmlApplicationContext;
 5 
 6 public class KnightMain {
 7 
 8   public static void main(String[] args) throws Exception {
 9     ClassPathXmlApplicationContext context = 
10         new ClassPathXmlApplicationContext("classpath:knight.xml");
11     Knight knight = context.getBean(Knight.class);
12     knight.embarkOnQuest();
13     context.close();
14   }
15 
16 }

6.运行

1 三月 01, 2016 9:42:47 上午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh
2 信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@4ec12ad8: startup date [Tue Mar 01 09:42:47 CST 2016]; root of context hierarchy
3 三月 01, 2016 9:42:47 上午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
4 信息: Loading XML bean definitions from class path resource [knight.xml]
5 三月 01, 2016 9:42:47 上午 org.springframework.context.support.ClassPathXmlApplicationContext doClose
6 信息: Closing org.springframework.context.support.ClassPathXmlApplicationContext@4ec12ad8: startup date [Tue Mar 01 09:42:47 CST 2016]; root of context hierarchy
7 Embarking on quest to slay the dragon!

 

posted @ 2016-03-01 10:27  shamgod  阅读(256)  评论(0)  编辑  收藏  举报
haha