spring基础——＜bean＞scope属性

通过对scope属性的设置可实现单例或多例，默认不设置为单例

singleton 单例（默认值）

prototype 多例

例如

<bean id="user" class="spring.User" scope="prototype"></bean>

判断是多例还是单例

ApplicationContext context = new ClassPathXmlApplicationContext("bean.xml");
User user1 = beanFactory.getBean("user", User.class);
User user2 = beanFactory.getBean("user", User.class);
System.out.println(user1 == user2);