spring4笔记----spring4构造注入

与设值注入有以下不同，颜色标出

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;
    }*/
    public chinese(root dog) {
        this.dog = dog;
    }
    @Override
    public void cut() {
        // TODO Auto-generated method stub
        System.out.println("我是中国人");
        System.out.println(dog.chop());
    }
    
    
}

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<?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">
<!--  <property name="dog" ref="iron"></property>
 -->
 <constructor-arg ref="iron" type="com.ij34.servce.root"></constructor-arg>
  </bean>
 <bean id="stone" class="com.ij34.web.stonechop"></bean>
 <bean id="iron" class="com.ij34.web.ironchop"></bean>
</beans>

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