spring4笔记----spring4设值注入

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2个接口

package com.ij34.servce;

public interface people {
       public void cut();
  
}

package com.ij34.servce;

public interface root {
  public String chop();
}

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实现上面的接口

package com.ij34.web;

import com.ij34.servce.people;
import com.ij34.servce.root;

public class chinese implements people{
    private root dog;



    public root getDog() {
        return dog;
    }



    public void setDog(root dog) {
        this.dog = dog;
    }

package com.ij34.web;

import com.ij34.servce.root;

public class stonechop implements root{

    @Override
    public String chop() {
        // TODO Auto-generated method stub
        return "使用石头";
    }
  
}

package com.ij34.web;

import com.ij34.servce.root;

public class ironchop implements root{

    @Override
    public String chop() {
        // TODO Auto-generated method stub
        return "使用铁斧";
    }

}

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beans

<?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-4.3.xsd">

 <bean id="chinese" class="com.ij34.web.chinese">     //  是chinese不是people
 <property name="dog" ref="iron"></property>
 </bean>
 <bean id="stone" class="com.ij34.web.stonechop"></bean>
 <bean id="iron" class="com.ij34.web.ironchop"></bean>
</beans>

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加载bean，实现调用实例

package com.ij34.bean;


import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.ij34.servce.people;

public class test {

    
    public static void main(String[] args) throws Exception{
        // TODO Auto-generated method stub
        @SuppressWarnings("resource")
        ApplicationContext app=new ClassPathXmlApplicationContext("beans.xml");
        people p= app.getBean("chinese",people.class);
         p.cut();
    }

}