（四）spring配置bean的作用域

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
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.xsd"> <!--
使用bean的scope属性来支配bean的作用域
singleton:默认值,容器初始时创建bean实例，在整个容器的生命周期内只建立一个bean
prototype:原型的，容器初始化时不创建bean实例，而在每次请求时创建一个新的Bean实例，并返回,
每次向容器获取bean,都是获取新的bean
-->
<bean id="car" class="com.atguigu.spring.beans.autowire.Car"
scope="singleton">
<property name="brand" value="Audi"></property>
<property name="price" value="300000"></property>
</bean>
</beans>

package com.atguigu.spring.beans.scope;
import java.sql.SQLException;

import javax.sql.DataSource;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.atguigu.spring.beans.autowire.Car;
public class Main {
public static void main(String[] args) throws SQLException {
ApplicationContext ctx=new ClassPathXmlApplicationContext("beans-scope.xml");
Car car=(Car) ctx.getBean("car");
Car car2 =(Car) ctx.getBean("car");
System.out.println(car==car2);
}
}