Spring实战——获得Bean本身的id

浅浅的花香味﹌ 2021-07-24 15:45 496阅读 0赞

**一 配置**

<?xml version="1.0" encoding="GBK"?>
    <beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://www.springframework.org/schema/beans"
         xsi:schemaLocation="http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans-4.0.xsd">
         
         <bean id="chinese"  class="org.crazyit.app.service.Chinese"/>
    </beans>

**二 Bean**

package org.crazyit.app.service;
    import org.springframework.beans.factory.BeanNameAware;
    
    public class Chinese implements BeanNameAware
    {
         // 保存部署该Bean时指定的id属性
         private String beanName;
         public void setBeanName(String name)
         {
               this.beanName = name;
         }
         public void info()
         {
               System.out.println("Chinese实现类"
                    + ", 部署该Bean时指定的id为" + beanName);
         }
    }

**三 测试类**

package lee;
    
    
    import org.springframework.context.*;
    import org.springframework.context.support.*;
    
    
    import org.crazyit.app.service.*;
    
    public class SpringTest
    {
        public static void main(String[] args)
        {
            // 创建Spring容器，容器会自动预初始化所有Bean实例
            ApplicationContext ctx =
                new ClassPathXmlApplicationContext("beans.xml");
            Chinese chin = ctx.getBean("chinese" , Chinese.class);
            chin.info();
        }
    }

**四 测试结果**

Chinese实现类, 部署该Bean时指定的id为chinese