项目结构

http://www.cnblogs.com/hongten/gallery/image/112322.html

这里需要设置环境：

添加如下jar包

commons-logging.jar

spring.jar

/spring_0001_搭建spring环境/src/com/b510/service/PersonService.java

 1 package com.b510.service;
 2 /**
 3  * 
 4  * @author Hongten
 5  * 这是一个Service层的接口
 6  *
 7  */
 8 public interface PersonService {
 9 
10     public abstract void save();
11 
12 }

/spring_0001_搭建spring环境/src/com/b510/service/impl/PersonServiceBean.java

 1 package com.b510.service.impl;
 2 
 3 import com.b510.service.PersonService;
 4 /**
 5  * 
 6  * @author Hongten
 7  *    实现PersonService接口
 8  */
 9 public class PersonServiceBean implements PersonService {
10     /* (non-Javadoc)
11      * @see com.b510.service.impl.PersonService#save()
12 */
13     public void save() {
14         System.out.println("i'm hongten,这是save()方法");
15     }
16 }

beans.xml

1 <?xml version="1.0" encoding="UTF-8"?>
2 <beans xmlns="http://www.springframework.org/schema/beans"
3     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4     xsi:schemaLocation="http://www.springframework.org/schema/beans
5            http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">
6     <bean id="personServiceImpl" class="com.b510.service.impl.PersonServiceBean"></bean>
7 </beans>

/spring_0001_搭建spring环境/src/junit/test/SpringTest.java

package junit.test;

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

import com.b510.service.PersonService;
/**
 * 
 * @author Hongten
 *    测试类
 */
public class SpringTest {

    @BeforeClass
    public static void setUpBeforeClass() throws Exception {
    }

    /**
     * spring容器实例化
     */
    public void instanceSpring(){
        ApplicationContext ctx=new ClassPathXmlApplicationContext(new String[]{"beans.xml"});
        //取出bean
        PersonService personService=(PersonService) ctx.getBean("personServiceImpl");
        //调用bean的方法save()
        personService.save();
    }
    
    public static void main(String[] args) {
        new SpringTest().instanceSpring();
    }
}

ApplicationContext实例是Spring的核心，它既是一个巨大的工厂，也是一个功能强大的工厂，spring框架的绝大部分功能

都是通过该容器实现的。

运行结果

2012-3-5 20:19:05 org.springframework.context.support.AbstractApplicationContext prepareRefresh
信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@15eb0a9: display name [org.springframework.context.support.ClassPathXmlApplicationContext@15eb0a9]; startup date [Mon Mar 05 20:19:05 CST 2012]; root of context hierarchy
2012-3-5 20:19:05 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from class path resource [beans.xml]
2012-3-5 20:19:05 org.springframework.context.support.AbstractApplicationContext obtainFreshBeanFactory
信息: Bean factory for application context [org.springframework.context.support.ClassPathXmlApplicationContext@15eb0a9]: org.springframework.beans.factory.support.DefaultListableBeanFactory@16a786
2012-3-5 20:19:05 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
信息: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@16a786: defining beans [personServiceImpl]; root of factory hierarchy
i'm hongten,这是save()方法

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