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());

    }

}

---

<?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>

---