spring学习1-初始项目

<dependencies>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>4.3.13.RELEASE</version>
    </dependency>
</dependencies>

MesasageService类
    package hello;
     public class MesasageService {
         /**
          * 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;
     public class MessagePrinter {
         private MesasageService service;
         /*
         * 简历和MessageService的关系
         * */
         //设置service的值
         public void setService(MesasageService service){
             this.service =service;
         }
         public void printMessage(){
             System.out.println(this.service.getMessage());
         }
     }application类
    package hello;
     import javax.print.attribute.standard.RequestingUserName;
     public class Application {
         public static void main(String[] args){
             System.out.println("application" + "");
             //创建打印机对象
             MessagePrinter printer = new MessagePrinter();
             //创建消息服务对象
             MesasageService service = new MesasageService();
             //设置打印机属性
             printer.setService(service);
             //打印消息
             printer.printMessage();
         }
     }运行结果
     application
     Hello World