spring 管理bean

目录结构：

Person.java

package com.wss.entity;

import com.wss.service.doHomeWork;

public class Person {

    private String name;
    private int age;
    private doHomeWork dohomework;
    
    public void setDoHomeWork(doHomeWork dohomework) {
        this.dohomework = dohomework;
    }
    public doHomeWork getDoHomeWork() {
        return this.dohomework;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public int getAge() {
        return age;
    }
    public void setAge(int age) {
        this.age = age;
    }
    @Override
    public String toString() {
        return "Person [name=" + name + ", age=" + age + ", dohomework=" + dohomework + "]";
    }
}

doHomeWork.java

package com.wss.service;

public class doHomeWork {
    
    public String write() {
        return new String("write");
    }
}

PersonTest.java

package com.wss.test;

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

import com.wss.entity.Person;

public class PersonTest {

    @Test
    public void test1() {
        ApplicationContext context = new ClassPathXmlApplicationContext("spring-config.xml");
        Person person = context.getBean("person", Person.class);
        System.out.println(person.toString());
        System.out.println(person.getDoHomeWork().write());
    }
}

spring-config.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" 
       xsi:schemaLocation="http://www.springframework.org/schema/beans  
                           http://www.springframework.org/schema/beans/spring-beans.xsd">
    <!-- 配置person实例，其实现类是Person -->
    <bean id="person" class="com.wss.entity.Person">
        <property name="name" value="wss"></property>
        <property name="age" value="24"></property>
        <!-- 驱动调用person的setDoHomeWork()方法，将容器中的stoneAxe作为参数传入 -->
        <property name="doHomeWork" ref="dohomework"></property>
    </bean>
    <!-- 配置dohomework实例，其实现类是doHomeWork -->
    <bean id="dohomework" class="com.wss.service.doHomeWork"></bean>
</beans>

运行结果：

 两种注入方式：