SPRING IN ACTION 第4版笔记-第一章-002-DI介绍

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> 
<bean id="knight" class="chapter01.sia.knights.BraveKnight">
<constructor-arg ref="quest" />
</bean>

<bean id="quest" class="chapter01.sia.knights.SlayDragonQuest">
<constructor-arg value="#{T(System).out}" />
</bean>

</beans>

package chapter01.sia.knights;

public interface Knight {

void embarkOnQuest();

}

package chapter01.sia.knights;

public class BraveKnight implements Knight {

private Quest quest;

public BraveKnight(Quest quest) {
this.quest = quest;
}

public void embarkOnQuest() {
quest.embark();
}

}

package chapter01.sia.knights;

import java.io.PrintStream;

public class SlayDragonQuest implements Quest {

private PrintStream stream;

public SlayDragonQuest(PrintStream stream) {
this.stream = stream;
}

public void embark() {
stream.println("Embarking on quest to slay the dragon!");
}

}

package chapter01.sia.knights;

import org.springframework.context.support.
ClassPathXmlApplicationContext;

public class KnightMain {

public static void main(String[] args) throws Exception {
ClassPathXmlApplicationContext context =
new ClassPathXmlApplicationContext("classpath:knight.xml");
Knight knight = context.getBean(Knight.class);
knight.embarkOnQuest();
context.close();
}

}

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