13_注解05_注解的继承

【工程截图】

 

【SuperPerson.java】

package com.HigginCui.annotation;

import org.springframework.stereotype.Component;

@Component("superPerson")
public class SuperPerson {
    public void superPersonSay(){
        System.out.println("super Person!!!");
    }
}

【Person.java】

package com.HigginCui.annotation;

import javax.annotation.Resource;
import org.springframework.stereotype.Component;

@Component("person")
public class Person {
    @Resource(name="superPerson")
    private SuperPerson supperPerson;
    
    public void personSay(){
        this.supperPerson.superPersonSay();
    }
}

【Studnet.java】

package com.HigginCui.annotation;

import org.springframework.stereotype.Component;

@Component("student")
public class Student extends Person{
    public void studentSay(){
        this.personSay();
    }
}

【applicationContext.xml】

<?xml version= "1.0" encoding ="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:context="http://www.springframework.org/schema/context"
       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-2.5.xsd
           http://www.springframework.org/schema/context
           http://www.springframework.org/schema/context/spring-context-2.5.xsd">

    <!-- 把一个类放入到Spring容器中，该类就是一个component，此时不需要声明对应的bean -->
    <context:component-scan base-package="com.HigginCui.annotation"></context:component-scan>
</beans>

 

【testPerson.java】

package com.HigginCui.test;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.HigginCui.annotation.Student;

public class testPerson {
    @Test
    public void test(){
        ApplicationContext context=new ClassPathXmlApplicationContext("applicationContext.xml");
        Student student=(Student) context.getBean("student");
        student.studentSay();
    }
}

【运行结果】

super Person!!!