Spring随笔
Spring随笔
- BeanFactory和ApplictionContext
- bean增强 AutowiredAnnotationBeanPostProcessor
- 工厂增强
BeanFactory和ApplictionContext
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BeanFactory装载了bean实例，一个容器，提供了对bean的增删改查
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ApplictionContext继承了factory，除此之外还装配了一系列的工厂后置处理器和bean后置处理器
- BeanFactoryPostProcessor工厂的增强，比如解析@Config，@ComponentScan等注解
- BeanPostProcessor bean的增强，比如解析@Autowired，@Resource等
bean增强 AutowiredAnnotationBeanPostProcessor
Field bean3 = Bean1.class.getDeclaredField("bean3");//对字段依赖的封装DependencyDescriptor dd1 = new DependencyDescriptor(bean3, false);Object o = beanFactory.doResolveDependency(dd1, null, null, null);System.out.println(o);Method setBean2 = Bean1.class.getDeclaredMethod("setBean2", Bean2.class);DependencyDescriptor dd2 =//方法中可能会有多个参数new DependencyDescriptor(new MethodParameter(setBean2, 0), true);//交个bean工厂去解析依赖数据Object o1 = beanFactory.doResolveDependency(dd2, null, null, null);System.out.println(o1);
