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 + "]";
     }
 }

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doHomeWork.java

 package com.wss.service;

 public class doHomeWork {

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

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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());
     }
 }

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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>

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运行结果：

两种注入方式：