<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
        <context:component-scan base-package="Bean.UserData"></context:component-scan>
</beans>

package Bean.UserData;
import org.springframework.stereotype.Component;
//最上面這個(gè)注解  就相當(dāng)于之前xml中的bean聲明  value就是當(dāng)時(shí)的id class  就是當(dāng)前類(lèi)的路徑
//類(lèi)上的注解  value可以不寫(xiě)  不寫(xiě)用默認(rèn)值  默認(rèn)值就是類(lèi)的名字
//但如果你的類(lèi)名名首個(gè)字母是大寫(xiě) 默認(rèn)值會(huì)將首字母變成小寫(xiě)
@Component(value = "userService")
public class user {
    public String toString(){
        return "我是user對(duì)象";
    }
}

import Bean.UserData.User;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class text {
    public static void main(String args[]) {
        ApplicationContext context = new ClassPathXmlApplicationContext("bean.xml");
        User user = context.getBean("userService", User.class);
        System.out.println(user);
    }
}