@Test public void test(){ //通过编程的方式去启动一个bean容器---该类通常用于测试,用于加载任意的外部资源,而不用加载特定格式的文件 StaticApplicationContext staticAppContext=new StaticApplicationContext(); MutablePropertyValues pvs=new MutablePropertyValues(); //在创建对象,需要指定实现类,不能是用抽象类或者接口,否则会出现错误 staticAppContext.registerSingleton("userDao", UserDaoImpl.class); //创建为UserServiceImpl---可以通过 pvs.add("userDao", staticAppContext.getBean(UserDao.class)); //注册为单例模式 并将属性键值对传入,value可以为引用类型 staticAppContext.registerSingleton("userService", UserServiceImpl.class, pvs); staticAppContext.registerSingleton("userService2", UserServiceImpl2.class); UserService userService=staticAppContext.getBean("userService",UserService.class); userService.save("hot", "123456"); ConfigurableListableBeanFactory factory=staticAppContext.getBeanFactory(); Map<String, Object> beans=factory.getBeansWithAnnotation(Quality.class); Iterator<Object> iterator=beans.values().iterator(); while(iterator.hasNext()){ System.err.println(iterator.next().getClass()); } staticAppContext.close(); }
我们可以通过上述的机制,来完成特殊的应用需求。例如,在web app启动的时候,从远程加载bean定义文件;动态创建bean;当然也可以通过别的机制完成特殊需求。各位根据自己的业务可以进行特殊定义
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