<!-- https://mvnrepository.com/artifact/org.springframework/spring-beans -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>5.1.5.RELEASE</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-context -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.1.5.RELEASE</version>
    </dependency>

package cn. spring. entity;
9/**
* Bean
*/
public class StudentBean {
//普通属性
private Integer stu_ id;
private String stu_ name;|
//方法
public void say(){
System. out. print1n("大家好，本人编号: "+stu_ id+"\t名字: "+stu_ name);
public Integer getStu_ id() {
return stu_ _id;
}
public void setStu_ id(Integer stu_ id) {
this.stu_ id = stu_ _id;
}

public class SpringIOC {
@Test
public void iocTest(){
//步骤一:加载配置文件applicationContext. xmL
ApplicationContext ctx=new ClassPathXm1ApplicationContext( configLocation: " applicationContext . xm1");
//步骤二:获取bean
StudentBean bean=(StudentBean) ctx. getBean( s: "studentBean");
bean.say();
}

< ?xml version="1. 0" encoding="UTF-8"?>
<beans xmIns= "http://www. springfr amework . 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">
白
<!--注入bean .
id相当于当前bean唯一标识
class是bean的全路径
property注入bean中的属性
必须封装
-->

<bean id="teacherBean
class="cn. spring . entity.TeacherBean">
property name="t_ _id" value= " 250" ></ property>
<property name="t_ name" value=" 刘磊" ></property>
</bean>
</beans>

* Bean
public class StudentBean {
//普通属性
private Integer stu_ id;
private String stu_ name;
//域属性
private TeacherBean teacherBean;
public TeacherBean getTeacherBean() {
return teacherBean ; ,
public void setTeacherBean(TeacherBean teacherBean) {
this . teacherBean = teacherBean;
|}

/*
Ink 墨盒接口
*/
public interface Ink {
//获取墨盒颜色
public String getInk();
}


/
**
*彩色墨盒实现类
*/
public class ColorInk implements Ink{
@Override
public String getInk() {
return "彩色";
}

/**
*黑白墨盒实现类
*/
public class GrayInk implements Ink{
public String getInk() {
return” 黑白";
}

/**
*纸张接口
/
public interface Paper {
//获取纸张大小
public String getPaper();|
}

/**
* A4实现类.
*/
public class A4Paper implements Paper{
public String getPaper() {
return "A4";
}
}

/**
*B5实现类
*/
public  class  B5Paper  implements  Paper{
public  String  getPaper(){
retuen  "B5";
}
}


/**
*打印机类
*/
public class Printer {
//纸张对象
private Paper paper;
//墨盒对象
private Ink ink;
//打印方法
public void print(){
System. out . print1n("您正在使用: "+paper . getPaper( )+"纸张和"
}
public Paper getPaper() {
}


<!--注入彩色墨盒
Bean的注入都是实现类-->
<bean id="colorInk" class="cn. spring。print. ink. ColorInk"></bean>
<bean id="grayInk" class="cn. spring. print . ink . GrayInk"></bean>
<!--注入纸张-->
<bean id="a4Paper" class="cn. spring . print.paper.A4Paper"></bean>
bean id="b5Paper" class="cn. spring. print. paper. B5Paper"></bean>
<!--打印机-->
<bean id="printer" class="cn. spring. print. printer . Printer">|
<!--将纸张和墨盒组合起来-->
property name="paper" ref= "b5Paper"></property>
<property name="ink" ref=" grayInk" ></ property>
</bean>


public class PrinterTest {
public static void main(String[] args) {
//步骤- :加载配置文件
ApplicationContext context=new ClassPathXmlApplicationContext( configLocation: " applicationContext . xml");
//调用bean 
Printer printer = (Printer) context. getBean( s: "printer");
printer . print();|
}