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  • Spring Bean范围 示例

    Spring 该目的是通过默认单身创建的对象

    设定Bean范围。由Bean美元Scope财产

    Scope取值范围:

    Singleton:单例

    proptotype:非单例

           Request:创建该Bean,并调用request.setAttribute(“beanId”,beanObj);

           Session:创建该Bean,并调用request.getSession().setAttribute(“beanId”,beanObj);

          globalSession:全局Session分布式server

    測试代码

    public class InitBeanApp {
    	@Test
    	public void show() {
    		ApplicationContext ac = new ClassPathXmlApplicationContext(
    				"applicatioContext.xml");
    		Bean1 bean1 = (Bean1) ac.getBean("bean2");
    		Bean1 bean2 = (Bean1) ac.getBean("bean2");
    		Bean1 bean3 = (Bean1) ac.getBean("bean3");
    		Bean1 bean4 = (Bean1) ac.getBean("bean3");
    		System.out.println(bean1);
    		System.out.println(bean2);
    		System.out.println(bean3);
    		System.out.println(bean4);
    	}
    }


    配置代码

    	<!-- bean的作用域 -->
    	<!-- scope:用于设置bean的作用域 默认值:singleton  单例-->
    	<bean id="bean2" class="com.hao947.bean.Bean1" scope="singleton">
    	</bean>
    	<!-- bean的作用域 -->
    	<!-- scope:对于设置bean范围 默认:prototype -->
    	<bean id="bean3" class="com.hao947.bean.Bean1" scope="prototype">
    	</bean>


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  • 原文地址:https://www.cnblogs.com/lcchuguo/p/4569966.html
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