一、       定义GreetingService接口

package cn.csdn.hr.service;

publicinterface GreetingService {

         publicvoid sayGeeting();

}

 

二、       定义GreetingServiceImpl类并实现GreetingService接口

package cn.csdn.hr.service;

publicclass GeetingServiceImplimplements GreetingService {

   private String greeting;

 

/*bean配置文件中property属性name 的名称和greeting一致，自动通过set方法注入*/

//依赖注入

   publicvoid setGreeting(String greeting) {

      this.greeting = greeting;

   }

   publicvoid sayGeeting() {

      System.out.println(greeting);

   }

}

 

三、       定义applicationContext.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"      xsi:schemaLocation="http://www.springframework.org/schema/beans           http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">       

 <bean id="greetingServiceBean"  class="cn.csdn.hr.service.GeetingServiceImpl" scope="singleton">

      <!-- propertybean中的属性值 -->

      <property name="greeting">

         <value>你好!</value>

      </property> 

    </bean>

</beans>

四、       测试

package cn.csdn.hr.junit;

import org.junit.Test;

import org.springframework.beans.factory.BeanFactory;

import org.springframework.beans.factory.xml.XmlBeanFactory;

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import org.springframework.context.support.FileSystemXmlApplicationContext;

import org.springframework.core.io.ClassPathResource;

import org.springframework.core.io.FileSystemResource;

import org.springframework.core.io.Resource;

import cn.csdn.hr.service.GeetingServiceBean;

import cn.csdn.hr.service.GreetingService;

public class AppMain {

             @Test

             public void test() {

             //装配bean

ApplicationContext context=new FileSystemXmlApplicationContext("D:\\Users\\Administrator\\workspace\\day\\src\\applicationContext.xml");

//创建beanFacory工厂

//获取BeanFactory工厂创建的bean对象

GreetingService greetingService =(GreetingService) context.getBean("greetingServiceBean");//xml资源文件中的classbean           

//使用bean的实例

                       greetingService.sayGeeting();

                                                        }

            

@Test

public void test1() {

         //装配bean                       

                                          //创建依赖的资源文件

         ApplicationContext applicationContext = new ClassPathXmlApplicationContext("applicationContext.xml");

                                          //获取BeanFactory工厂创建的bean对象

         GreetingService greetingService =(GreetingService)applicationContext.getBean("greetingServiceBean");//xml资源文件中的classbean的id名称

                                                  //使用bean的实例

                       greetingService.sayGeeting();

         }

}