Multi-instance and single-instance of a Springioc_ object

is an object in the spring container in the end a number of cases or a single case?

The default is a singleton, when the scope is set to prototype, when the object is created with multiple instances, when it is a multi-instance, regardless of lazy-init why value, are all in Context.getbean (); When you create an object

1.applicationcontext.xml

<?XML version= "1.0" encoding= "UTF-8"?><Beansxmlns= "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-2.5. XSD ">               <BeanID= "HelloWorld"class= "Com.spring.scope.HelloWord"></Bean>        <BeanID= "HelloWorld2"class= "Com.spring.scope.HelloWord"Scope= "Prototype"></Bean>            </Beans>

2. Test code

Helloword

 Package Com.spring.scope;  Public class Helloword {        public  Helloword () {                System.out.println ("Create Object");    }         publicvoid  hello () {        System.out.println ("Hello word!" );    }}

3. Testing

 Packagecom.spring.scope.test;Importorg.junit.Test;ImportOrg.springframework.context.ApplicationContext;ImportOrg.springframework.context.support.ClassPathXmlApplicationContext;ImportCom.spring.scope.HelloWord; Public classHellowordtest {/*** * objects in the Spring container, by default are singleton * Because the object is a single column, so long as a property is declared on a class that contains data, then this property will be global (dangerous)*/@Test Public voidTestscope_default () {//start the spring containerApplicationContext context=NewClasspathxmlapplicationcontext ("Applicationcontext.xml"); //extract the beans from the spring container according to the IDHelloword Helloword = (Helloword) context.getbean ("HelloWorld"); Helloword HelloWord2= (Helloword) context.getbean ("HelloWorld");         System.out.println (Helloword);         System.out.println (HELLOWORD2); //Create Object//[email protected]//[email protected]            }            /*** * If the scope for the Prototype,spring container is a multi-instance * * * If an object is a multi-instance, this object will change when created in the spring container, then the object will not be created when it is started, then GETBE     An () creates an object * i.e.: * If scope is prototype, the object is created at Context.getbean () regardless of the value of Lazy-init. *      */@Test Public voidTestscope_prototype () {//start the spring containerApplicationContext context=NewClasspathxmlapplicationcontext ("Applicationcontext.xml"); //extract the beans from the spring container according to the IDHelloword Helloword = (Helloword) context.getbean ("HelloWorld2"); Helloword HelloWord2= (Helloword) context.getbean ("HelloWorld2");         System.out.println (Helloword);               System.out.println (HELLOWORD2); /*Create object Create object [email protected] [email protected]*/            }        }

Multi-instance and single-instance of a Springioc_ object