spring学习1-初始项目

1打开idea----new project

 2点击建立项目的类型maven 点击next

 3点击next

 4选择路径，点击完成

 

5建立成功之后修改pom.xml配置文件

添加，解决依赖关系

 

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

6在main下建立一个hello包----下面建立三个类

 

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