Spring框架HelloWord

【1】创建beans.xml(等同于applicationContext.xml文件)

<?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-2.5.xsd">
    
    <bean id="personService" class="com.bird.service.impl.PersonServerImpl"></bean>
</beans>

【2】JavaBean编写

package com.bird.service;

    public interface PersonServer{
        void save();
    }


package com.bird.service.impl;

import com.bird.service.PersonServer;

public class PersonServerImpl implements PersonServer{

    public void save() {
        System.out.println("HelloWord！");
    }

}

【3】Test测试

package com.bird.service.test;

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

import com.bird.service.PersonServer;

public class TestSpring {
    public static void main(String []args){
        //初始化
        ApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");
        //用getBean方法调用personService对象
        PersonServer s = (PersonServer)ctx.getBean("personService");
        //调用save方法
        s.save();
    }
}

【4】测试结果如下

2013-5-9 11:20:54 org.springframework.context.support.AbstractApplicationContext prepareRefresh

信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@133f1d7: startup date [Thu May 09 11:20:54 CST 2013]; root of context hierarchy
2013-5-9 11:20:54 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from class path resource [beans.xml]
2013-5-9 11:20:54 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
信息: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@1ce2dd4: defining beans [personService]; root of factory hierarchy
HelloWord！