12 Spring Bean的别名

最新推荐文章于 2024-06-22 20:09:43 发布

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最新推荐文章于 2024-06-22 20:09:43 发布

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分类专栏： Spring Framework 研究

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（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

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));
    }
}