spring学习6-使用xml方式实现spring基本应用

<?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.xsd">
         <!--
         bean元素：描述当前的对象需要由spring容器管理
         id属性：标识对象 未来在应用程序中可以根据id获取对象
         class对象：被管理的对象的全名
        -->
         <bean id="service" class="hello.MesasageService"></bean>
         <bean id="printer" class="hello.MessagePrinter">
             <property name="service" ref="service"></property>
         </bean>
     </beans>MesasageService 类
    package hello;
     //去掉注解
     public class MesasageService {
         public MesasageService() {
             super();
             System.out.println("MessageService...");
         }
         /**
          * 执行打印功能
          * @return 返回要打印的字符串
          */
         public String getMessage(){
             return "Hello World";
         }
     }MessagePrinter类
    package hello;
     //去掉注解
     public class MessagePrinter {
         //无参构造方法的加入
         public MessagePrinter() {
             super();
             System.out.println("MessagePrinter...");
         }
         private MesasageService service;
         /*
         * 简历和MessageService的关系
         * */
         //设置service的值
         //创建关联关系
         public void setService(MesasageService service){
             this.service =service;
         }
         public void printMessage(){
             System.out.println(this.service.getMessage());
         }
     }ApplicationSpring类
    package hello;
     import org.springframework.context.ApplicationContext;
     import org.springframework.context.annotation.AnnotationConfigApplicationContext;
     import org.springframework.context.support.ClassPathXmlApplicationContext;
     //加入扫描
     public class ApplicationSpring {
         public static void main(String[] args){
             System.out.println("appliaction....");
             //初始化spring
             ApplicationContext context =new ClassPathXmlApplicationContext("applicationContext.xml");
             //获取messagePrinter对象
             MessagePrinter printer=context.getBean(MessagePrinter.class);
             printer.printMessage();
         }
     }