Spring的配置，bean后处理器，工厂使用以及生命周期等

た入场券 2023-01-11 08:34 12阅读 0赞

//最原始的 //@Test /*public void myTest() \{ IStudentService iStudentService=new StudentServiceimpl(); iStudentService.doFirst(); iStudentService.doDestroy(); \}*/ //使用配置文件 @Test public void myTest() \{ String resource = “applicationContext.xml”; //------------<<< //以文件路径 //ApplicationContext applicationContext=new FileSystemXmlApplicationContext(“classpath:applicationContext.xml”); //配置多个spring：例如spring-student.xml,spring-school.xml等,则路径资源可写为spring-*； //在总spring.xml中，使用import标签引入其他spring-(…).xml文件，即可在路径资源下只引用总配置文件spring.xml //直接使用工厂创建 //IStudentService iStudentService=new StudentFactory().getStudentFactory(); //iStudentService.doDestroy(); //用bean注册创建 //StudentFactory factory=(StudentFactory) applicationContext.getBean(“serviceFactory”); //---------------factory.getStudentFactory(); //用bean的工厂注册创建 //IStudentService iStudentService=(IStudentService) applicationContext.getBean(“someStudentFactory”); //iStudentService.doDestroy(); /* \* scope作用域： \* prototype，每次都会创建一个对象，原型模式 \* singleton：单例模式，默认 \* IStudentService iStudentService2=(IStudentService) \* applicationContext.getBean(“serviceStudent”); \* System.out.println(iStudentService2); \* System.out.println(iStudentService); \*/ //------------>>> //以当前类路径 ApplicationContext applicationContext=new ClassPathXmlApplicationContext(resource); //最原始的方式 IStudentService iStudentService=(IStudentService) applicationContext.getBean(“serviceStudent”); iStudentService.doDestroy(); String doFirst = iStudentService.doFirst(); System.out.println(doFirst); //关闭容器 ((ClassPathXmlApplicationContext)applicationContext).close(); \}

ApplicationContext配置：