12 Spring Bean的别名

（1）Bean别名（Alias）的价值

• 复用现有的BeanDefinition
• 更具有场景化的命名方法：比如:

<alias name="myApp-dataSource" alias="subsystemA-dataSource"/>

<alias name="myApp-dataSource" alias="subsystemB-dataSource"/>

 

（2）实例代码

1. 复用Bean配置信息

 

package org.binsoft.thinking.in.spring.bean.definition;

import org.binsoft.thinking.in.spring.ioc.overview.domain.User;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * TODO
 *
 * @author Administrator
 * @version 1.0
 * @date 2021/1/5 22:22
 */
public class BeanAliasDemo {
    public static void main(String[] args) {
        BeanFactory beanFactory = new ClassPathXmlApplicationContext("classpath:/META-INF/bean-definitions-context.xml");
        User user = beanFactory.getBean("user",User.class);
        User binsoftUser = beanFactory.getBean("binsoft-user",User.class);
        System.out.println("user == binsoftUser:" + (user == binsoftUser));
    }
}