Spring 簡單 的例子:

1.interface:

package com.houyawei;

public interface Action {
public String execute(String str);
}

2.實現接口的類：LowerAction 和 UpperAction:

package com.houyawei;

public class UpperAction implements Action {

private String message;
public String getMessage() {
return message;
}
public void setMessage(String string) {
message = string;
}
public String execute(String str) {
return (getMessage() + str).toUpperCase();
}

}

package com.houyawei;

public class LowerAction implements Action {

private String message;

public String getMessage() {
return message;
}
public void setMessage(String string) {
message = string;
}
public String execute(String str) {
return (getMessage()+str).toLowerCase();
}

}

2.xml配置文件：bean.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE beans PUBLIC "-// SPRING /DTD BEAN/EN" " http://www.springframework.org/dtd/ spring -beans.dtd ">
<beans>
<description> Spring Quick Start</description>
<bean id="upperaction" class="com.houyawei.UpperAction">
<property name="message">
<value>HeLLo,</value>
</property>
</bean>
<bean id="loweraction" class="com.houyawei.LowerAction">
<property name="message">
<value>hello,</value>
</property>
</bean>
</beans>

4.測試類SampleTest :

package test;

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

import com.houyawei.Action;

public class SampleTest {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
ApplicationContext ctx=new
FileSystemXmlApplicationContext("bean.xml");
Action action = (Action) ctx.getBean("upperaction");
System.out.println(action.execute("wangshigeyao"));

Action action2 = (Action) ctx.getBean("loweraction");
System.out.println(action2.execute("wangshigeyao"));
}

}

5.程序代碼結構：