spring小实例

 

Spring简单的例子:

 

1.interface:

   package com.houyawei;

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

2.实现接口的类：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.测试类 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.程序代码结构：