Spring实战——byName规则

一 配置

<?xml version="1.0" encoding="GBK"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xmlns="http://www.springframework.org/schema/beans"
     xsi:schemaLocation="http://www.springframework.org/schema/beans
     http://www.springframework.org/schema/beans/spring-beans-4.0.xsd">
     <!-- 指定使用byName策略，Spring会根据setter方法的方法名与Bean的id进行匹配 -->
     <bean id="chinese"  class="org.crazyit.app.service.impl.Chinese"
           autowire="byName"/>
     <bean id="gunDog"  class="org.crazyit.app.service.impl.GunDog">
           <property name="name" value="wangwang"/>
     </bean>
</beans>

二 接口

Dog

package org.crazyit.app.service;

public interface Dog
{
     public String run();
}

Person

package org.crazyit.app.service;

public interface Person
{
     public void test();
}

三 实现类

Chinese

package org.crazyit.app.service.impl;
import org.crazyit.app.service.*;

public class Chinese implements Person
{
     private Dog dog;
     // dog的setter方法
     public void setGunDog(Dog dog)
     {
           this.dog = dog;
     }
     public Dog getDog()
     {
           return this.dog;
     }
     public void test()
     {
           System.out.println("我是一个普通人,养了一条狗："
                + getDog().run());
     }
}

Gundog

package org.crazyit.app.service.impl;
import org.crazyit.app.service.*;

public class GunDog implements Dog
{
     private String name;
     public void setName(String name)
     {
           this.name = name;
     }
     public String getName()
     {
           return name;
     }
     public String run()
     {
           return "我是一只叫" + getName()
                + "的猎犬，奔跑迅速..." ;
     }
}

四 测试类

package lee;


import org.springframework.context.*;
import org.springframework.context.support.*;


import org.crazyit.app.service.*;

public class SpringTest
{
    public static void main(String[] args)
    {
        // 以类加载路径下的beans.xml作为配置文件，创建Spring容器
        ApplicationContext ctx = new
            ClassPathXmlApplicationContext("beans.xml");
        Person p = ctx.getBean("chinese" , Person.class);
        p.test();
    }
}

五 测试结果

我是一个普通人,养了一条狗：我是一只叫wangwang的猎犬，奔跑迅速...