Java-Spring例题(2)

annotation.dao包下的Leg.java

package annotation.dao;public interface Leg {    public void run();}

annotation.dao包下的LegImpl.java

package annotation.dao;import org.springframework.stereotype.Repository;//配置一个bean，相当于<bean id="" class="">。@Repositorypublic class LegImpl implements Leg{    @Override    public void run() {        // TODO Auto-generated method stub         System.out.println("健步如飞");    }}

annotation.service包下的 People.java

package annotation.service;public interface People {    public void run();}

annotation.service包下的 PeopleImpl.java

package annotation.service;import annotation.dao.Leg;import org.springframework.stereotype.Service;import org.springframework.beans.factory.annotation.Autowired;//配置一个bean，相当于<bean id="peopleimpl" class="">。@Service("peopleimpl")public class PeopleImpl implements People{//    主动依据类型注入。    @Autowired    private Leg l;        public PeopleImpl(Leg l){        this.l=l;    }        @Override    public void run() {        // TODO Auto-generated method stub         l.run();         System.out.println("People 构造方法 注入 leg");    }}

annotation.service包下的 PeopleImpl1.java

package annotation.service;import org.springframework.stereotype.Service;import org.springframework.beans.factory.annotation.Autowired;import annotation.dao.Leg;//配置一个bean，相当于<bean id="peopleimpl1" class="">。@Service("peopleimpl1")public class PeopleImpl1 implements People {    @Autowired    private Leg l1;    public void setL1(Leg l1) {        this.l1 = l1;    }    @Override    public void run() {        // TODO Auto-generated method stub         l1.run();         System.out.println("People setter办法 注入 leg");    }}

test包下的TestPeople.java

package test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import annotation.service.People;public class TestPeople {    public static void main(String[] args) {        ApplicationContext appCon=new ClassPathXmlApplicationContext("annotationContext.xml");        People p=(People)appCon.getBean("peopleimpl");        p.run();        People p1=(People)appCon.getBean("peopleimpl1");        p1.run();    }}

annotationContext.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"    xmlns:context="http://www.springframework.org/schema/context"    xsi:schemaLocation="http://www.springframework.org/schema/beans        http://www.springframework.org/schema/beans/spring-beans.xsd        http://www.springframework.org/schema/context        http://www.springframework.org/schema/context/spring-context.xsd">    <!--指定要扫描的包这个包下的注解就会失效-->    <context:component-scan base-package="annotation"/>      <!--开启注解的反对-->    <context:annotation-config/></beans>