spring入门小例子

Spring 入门小例子

下面的这个小例子来自《Spring开发指南》:

一、程序结构

 

     程序结构参照附件中的图片。该例子是一个java project.

 

二、log4j.properties

log4j.rootLogger=DEBUG,stdout

log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%c{1} - %m%n

 

三、net.xiaxing.spring.qs.Action

   

package net.xiaxing.spring.qs;

/**
 * Action 接口
 * 
 * @author duyanjun
 * @version 1.0
 */
public interface Action {
	
	/**
	 * execute 方法
	 * 
	 * @param str 需显示的字付串
	 * @return String ：显示的字付串
	 */
	public String execute(String str);
}

 

四、net.xiaxing.spring.qs.UpperAction

package net.xiaxing.spring.qs;

/**
 * 转换大写Action
 * 
 * @author duyanjun
 * @version 1.0
 */
public class UpperAction implements Action {

	// message
	private String message;
	
	/**
	 * @return the message
	 */
	public String getMessage() {
		return message;
	}
	
	/**
	 * @param message the message to set
	 */
	public void setMessage(String message) {
		this.message = message;
	}

	/**
	 * execute 方法
	 * 
	 * @param str 需显示的字付串
	 * @return String ：显示的字付串
	 */
	public String execute(String str) {
		return (this.getMessage() + str).toUpperCase();
	}

}

 

 

五、net.xiaxing.spring.qs.LowerAction

package net.xiaxing.spring.qs;

/**
 * 转换小写Action 
 * 
 * @author duyanjun
 * @version 1.0
 *
 */
public class LowerAction implements Action {

	// message
	private String message;
	
	/**
	 * @return the message
	 */
	public String getMessage() {
		return message;
	}
	
	/**
	 * @param message the message to set
	 */
	public void setMessage(String message) {
		this.message = message;
	}
	
	/**
	 * execute 方法
	 * 
	 * @param str 需显示的字付串
	 * @return String ：显示的字付串
	 */
	public String execute(String str) {
		return (this.getMessage() + str).toLowerCase();
	}

}

 

 

 

 六、test.TestQuickStart

package test;

import net.xiaxing.spring.qs.Action;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;

/**
 * 测试程序
 * 
 * @author duyanjun
 * @version 1.0
 */
public class TestQuickStart {
	
	/**
	 * 测试方法
	 */
	public void testQuickStart(){
		ApplicationContext ctx = new FileSystemXmlApplicationContext("bean.xml");
		Action action = (Action) ctx.getBean("theAction");
		System.out.println(action.execute("Rod Johnson"));
	}
	
	/**
	 * main方法
	 * 
	 * @param args : 需在运行程序时传入的参数
	 */
	public static void main(String[] args){
		TestQuickStart testQuickStart = new TestQuickStart();
		testQuickStart.testQuickStart();
	}
}

 

 

七、bean.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"
	xmlns:aop="http://www.springframework.org/schema/aop"
	xsi:schemaLocation="http://www.springframework.org/schema/beans    
           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd   
           http://www.springframework.org/schema/context   
           http://www.springframework.org/schema/context/spring-context-2.5.xsd   
           http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">
	<bean id="theAction" class="net.xiaxing.spring.qs.UpperAction">
		<property name="message">
			<value>Hello</value>
		</property>
	</bean>
</beans>

  

 

八、运行结果

HELLOROD JOHNSON 

如果将bean.xml中的

<bean id="theAction" class="net.xiaxing.spring.qs.UpperAction">

改为

<bean id="theAction" class="net.xiaxing.spring.qs.LowerAction">

 运行结果为：

 hellorod johnson