{"id":115346,"date":"2026-10-12T00:41:04","date_gmt":"2026-10-11T16:41:04","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/115346.html"},"modified":"2026-10-12T00:41:04","modified_gmt":"2026-10-11T16:41:04","slug":"%e7%8e%a9%e8%bd%acspring%e7%9b%98%e7%82%b9-spring-%e5%b8%b8%e7%94%a8%e6%89%a9%e5%b1%95%e7%82%b9%ef%bc%9abeanfactorypostprocessor%e3%80%81beanpostprocessor%e3%80%81enable%e3%80%81%e8%87%aa%e5%8a%a8","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/115346.html","title":{"rendered":"[\u73a9\u8f6cSpring]\u76d8\u70b9 Spring \u5e38\u7528\u6269\u5c55\u70b9\uff1aBeanFactoryPostProcessor\u3001BeanPostProcessor\u3001@Enable\u3001\u81ea\u52a8\u914d\u7f6e\u5230\u5e95\u8be5\u7528\u54ea\u4e2a\uff1f"},"content":{"rendered":"
\n

💡 Spring \u7ed9\u6211\u4eec\u7559\u4e86\u5f88\u591a\u6269\u5c55\u70b9\u3002\u7528\u597d\u5b83\u4eec，\u5f88\u591a\u4e1a\u52a1\u903b\u8f91\u6839\u672c\u4e0d\u9700\u8981\u6539\u4e3b\u5e72\u4ee3\u7801；\u5e02\u9762\u4e0a\u5927\u91cf\u7b2c\u4e09\u65b9\u6846\u67b6（MyBatis \u96c6\u6210\u3001\u5404\u79cd starter\u3001AOP\u3001\u914d\u7f6e\u4e2d\u5fc3\u5ba2\u6237\u7aef），\u5305\u62ec Spring \u81ea\u5df1，\u672c\u8d28\u4e0a\u90fd\u662f\u5728\u8fd9\u6279\u6269\u5c55\u70b9\u4e0a\u505a\u6587\u7ae0\u3002\u5bf9\u4fee\u6539\u5173\u95ed\u3001\u5bf9\u6269\u5c55\u5f00\u653e，Spring \u662f\u628a\u5b83\u843d\u8fdb\u4e86\u63a5\u53e3\u91cc\u3002<\/p>\n

\u4f46\u771f\u5230\u52a8\u624b\u7684\u65f6\u5019，\u95ee\u9898\u5f80\u5f80\u4e0d\u662f"\u4e0d\u77e5\u9053\u6709\u8fd9\u4e9b\u63a5\u53e3"，\u800c\u662f\u8fd9\u51e0\u4e2a：\u540c\u4e00\u4e2a\u9700\u6c42，\u8be5\u5728 BeanFactoryPostProcessor \u52a8\u624b\u8fd8\u662f BeanPostProcessor \u52a8\u624b？\u4e3a\u4ec0\u4e48\u6211\u7684 BeanPostProcessor \u91cc getBean \u4e00\u4e0b\u6765\u5c31\u8b66\u544a is not eligible for getting processed by all BeanPostProcessors？@PostConstruct\u3001afterPropertiesSet\u3001init-method\u3001ContextRefreshedEvent\u3001ApplicationReadyEvent \u5230\u5e95\u8c01\u5148\u8c01\u540e？<\/p>\n

\u8fd9\u7bc7\u6587\u7ae0\u6309"\u5bb9\u5668\u7ea7 \u2192 Bean \u7ea7 \u2192 \u5c31\u7eea\u65f6\u673a \u2192 \u52a8\u6001\u6ce8\u518c \u2192 Boot \u5c42"\u8fd9\u6761\u65f6\u95f4\u7ebf，\u628a\u5e38\u7528\u6269\u5c55\u70b9\u4e00\u6b21\u4e32\u8d77\u6765，\u6bcf\u4e2a\u90fd\u7ed9\u89e6\u53d1\u65f6\u673a\u3001\u80fd\u6539\u4ec0\u4e48\u3001\u5b98\u65b9\u81ea\u5df1\u600e\u4e48\u7528\u7684\u771f\u5b9e\u4f8b\u5b50，\u6700\u540e\u4e00\u5f20"\u9700\u6c42 \u2192 \u6269\u5c55\u70b9"\u9009\u578b\u8868\u3002<\/p>\n

\u6574\u4f53\u76d8\u70b9\u4e00\u4e0b Spring \u5e38\u7528\u6269\u5c55\u70b9：BeanFactoryPostProcessor\u3001BeanPostProcessor\u3001@Enable\u3001\u81ea\u52a8\u914d\u7f6e\u5230\u5e95\u8be5\u7528\u54ea\u4e2a？<\/p>\n

\"Spring<\/p>\n

\n

1. \u5148\u628a\u5730\u56fe\u94fa\u5f00：\u8fd9\u662f\u4e24\u6761\u4e0d\u540c\u7684\u65f6\u95f4\u7ebf<\/h3>\n

\u5927\u90e8\u5206\u56f0\u60d1\u6765\u81ea\u628a\u4e24\u6761\u65f6\u95f4\u7ebf\u6df7\u6210\u4e00\u6761\u3002\u5bb9\u5668\u7ea7\u6269\u5c55\u70b9\u5728 refresh() \u91cc\u8dd1，\u5904\u7406\u7684\u662f"\u4e00\u6279\u5b9a\u4e49"；Bean \u7ea7\u6269\u5c55\u70b9\u5728 getBean() \u91cc\u8dd1，\u5904\u7406\u7684\u662f"\u4e00\u4e2a\u5bf9\u8c61"\u3002<\/p>\n

\u5bb9\u5668 refresh()：
\nprepareBeanFactory –> invokeBeanFactoryPostProcessors –> registerBeanPostProcessors
\n [BDRPP \u5148, BFPP \u540e] [\u6b64\u65f6\u53ea\u6ce8\u518c, \u4e0d\u56de\u8c03]
\n –> onRefresh –> finishBeanFactoryInitialization –> finishRefresh
\n [preInstantiateSingletons [SmartLifecycle.start
\n \u9010\u4e2a getBean，Bean \u7ea7\u6269\u5c55\u70b9\u5728\u8fd9\u91cc\u8dd1] + \u53d1\u5e03 ContextRefreshedEvent]<\/p>\n

\u5355\u4e2a Bean \u7684\u751f\u547d\u5468\u671f：
\n\u5b9e\u4f8b\u5316\u524d\u94a9\u5b50 –> \u6784\u9020\u5b9e\u4f8b –> \u5c5e\u6027\u586b\u5145 –> Aware \u56de\u8c03 –> postProcessBeforeInitialization
\n[postProcessBeforeInstantiation] [postProcessProperties: @Autowired] [@PostConstruct \u4e5f\u5728\u8fd9\u4e00\u6b65]
\n –> afterPropertiesSet –> init-method –> postProcessAfterInitialization –> \u53ef\u7528 –> \u9500\u6bc1
\n [InitializingBean] [xml\/@Bean initMethod] [AOP \u4ee3\u7406\u5728\u8fd9\u91cc\u751f\u6210] [@PreDestroy \u2192 DisposableBean \u2192 destroy-method]<\/p>\n

\u628a\u8fd9\u4e24\u6761\u7ebf\u53e0\u5728\u4e00\u8d77\u770b，\u4e0a\u4e0b\u4e24\u6392\u7684\u5173\u7cfb\u5c31\u4e00\u76ee\u4e86\u7136：<\/p>\n

\"\u4e24\u6761\u65f6\u95f4\u7ebf\uff1a\u5bb9\u5668\u7ea7\u4e0e<\/p>\n

\u4e0b\u9762\u8fd9\u5f20\u8868\u662f\u5168\u6587\u7684\u7d22\u5f15，\u5efa\u8bae\u5148\u8bb0"\u4f5c\u7528\u57df"\u548c"\u5904\u7406\u5bf9\u8c61"\u8fd9\u4e24\u5217\u3002<\/p>\n\n\u6269\u5c55\u63a5\u53e3\u4f5c\u7528\u57df\u5904\u7406\u5bf9\u8c61\u89e6\u53d1\u65f6\u673a\u5178\u578b\u7528\u9014<\/tr>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
BeanDefinitionRegistryPostProcessor<\/td>\n\u5bb9\u5668<\/td>\nBeanDefinitionRegistry<\/td>\nrefresh() \u4e2d，\u65e9\u4e8e BFPP<\/td>\n\u52a8\u6001\u6ce8\u518c\u81ea\u5b9a\u4e49 bean（MyBatis \u626b\u63cf @Mapper）<\/td>\n<\/tr>\n
BeanFactoryPostProcessor<\/td>\n\u5bb9\u5668<\/td>\nBeanDefinition<\/td>\n\u5b9e\u4f8b\u5316\u4efb\u4f55 bean \u4e4b\u524d<\/td>\n\u6539\u914d\u7f6e\u5143\u6570\u636e：\u61d2\u52a0\u8f7d\u3001\u5360\u4f4d\u7b26\u3001\u5c5e\u6027\u8986\u76d6<\/td>\n<\/tr>\n
InstantiationAwareBeanPostProcessor<\/td>\nBean<\/td>\n\u5b9e\u4f8b \/ PropertyValues<\/td>\n\u5b9e\u4f8b\u5316\u524d\u540e\u3001\u5c5e\u6027\u586b\u5145<\/td>\n\u6362\u6389\u5b9e\u4f8b\u3001\u5e72\u9884\u6ce8\u5165（@Autowired \u7684\u5b9e\u73b0）<\/td>\n<\/tr>\n
BeanPostProcessor<\/td>\nBean<\/td>\nbean \u5b9e\u4f8b<\/td>\n\u521d\u59cb\u5316\u65b9\u6cd5\u524d\u540e<\/td>\n\u6539\u5c5e\u6027\u503c\u3001\u5305\u88c5\u4ee3\u7406（AOP \u7684\u5b9e\u73b0）<\/td>\n<\/tr>\n
DestructionAwareBeanPostProcessor<\/td>\nBean<\/td>\nbean \u5b9e\u4f8b<\/td>\n\u9500\u6bc1\u524d<\/td>\n\u7edf\u4e00\u5904\u7406 @PreDestroy<\/td>\n<\/tr>\n
ApplicationContextAware \u7b49 Aware<\/td>\nBean<\/td>\n\u81ea\u8eab<\/td>\n\u5c5e\u6027\u586b\u5145\u540e\u3001\u521d\u59cb\u5316\u524d<\/td>\n\u62ff\u5230\u5bb9\u5668 \/ Environment \/ \u8d44\u6e90\u52a0\u8f7d\u5668<\/td>\n<\/tr>\n
InitializingBean \/ DisposableBean<\/td>\nBean<\/td>\n\u81ea\u8eab<\/td>\n\u5c5e\u6027\u6ce8\u5165\u5b8c\u6210\u540e \/ \u9500\u6bc1\u524d<\/td>\n\u81ea\u5efa\u8fde\u63a5\u3001\u521d\u59cb\u5316\u7f13\u5b58 \/ \u91ca\u653e\u8d44\u6e90<\/td>\n<\/tr>\n
FactoryBean<\/td>\nBean<\/td>\n\u4ea7\u54c1\u5bf9\u8c61<\/td>\ngetBean \u65f6<\/td>\n\u4ea4\u7ed9\u6846\u67b6"\u600e\u4e48\u9020\u8fd9\u4e2a bean"（SqlSessionFactoryBean）<\/td>\n<\/tr>\n
ApplicationListener \/ @EventListener<\/td>\n\u5bb9\u5668<\/td>\n\u4e8b\u4ef6<\/td>\n\u4e8b\u4ef6\u53d1\u5e03\u65f6<\/td>\n\u542f\u52a8\u5b8c\u6210\u540e\u9884\u70ed\u3001\u5237\u65b0\u7d22\u5f15<\/td>\n<\/tr>\n
SmartInitializingSingleton<\/td>\n\u5bb9\u5668<\/td>\n\u81ea\u8eab<\/td>\n\u6240\u6709\u5355\u4f8b\u521d\u59cb\u5316\u5b8c\u6bd5<\/td>\n\u6279\u91cf\u6821\u9a8c\u3001\u9884\u70ed，\u6bd4\u5bb9\u5668\u4e8b\u4ef6\u66f4\u65e9<\/td>\n<\/tr>\n
SmartLifecycle<\/td>\n\u5bb9\u5668<\/td>\n\u81ea\u8eab<\/td>\nfinishRefresh \/ \u5173\u95ed\u65f6<\/td>\n\u6d88\u8d39\u8005\u3001\u5b9a\u65f6\u4efb\u52a1\u7684\u542f\u505c<\/td>\n<\/tr>\n
ImportBeanDefinitionRegistrar<\/td>\n\u5bb9\u5668<\/td>\nBeanDefinitionRegistry<\/td>\n\u89e3\u6790 @Configuration \u65f6<\/td>\n\u81ea\u5b9a\u4e49 @Enable* \u5f00\u5173<\/td>\n<\/tr>\n
Condition<\/td>\n\u5bb9\u5668<\/td>\n\u5143\u6570\u636e<\/td>\n\u89e3\u6790\u5019\u9009 bean \u65f6<\/td>\n\u6309\u914d\u7f6e\/\u7c7b\u8def\u5f84\u51b3\u5b9a\u88c5\u4e0d\u88c5<\/td>\n<\/tr>\n
HandlerInterceptor \/ Filter<\/td>\n\u8bf7\u6c42<\/td>\n\u5355\u6b21\u8bf7\u6c42<\/td>\n\u6bcf\u6b21 HTTP \u8bf7\u6c42<\/td>\n\u9274\u6743\u3001\u65e5\u5fd7\u3001\u7edf\u4e00\u54cd\u5e94<\/td>\n<\/tr>\n
EnvironmentPostProcessor \/ \u81ea\u52a8\u914d\u7f6e<\/td>\n\u5bb9\u5668（Boot）<\/td>\nEnvironment \/ \u5b9a\u4e49<\/td>\nrun() \u65e9\u671f \/ \u5bb9\u5668\u542f\u52a8<\/td>\nstarter \u9ed8\u8ba4\u503c\u3001\u914d\u7f6e\u89e3\u5bc6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u7b80\u5355\u7406\u89e3：<\/p>\n

\u6539"\u5b9a\u4e49"（\u8fd8\u6ca1 new \u51fa\u6765） –> BFPP \/ BDRPP \/ Registrar \/ @Conditional \/ \u81ea\u52a8\u914d\u7f6e
\n\u6539"\u5bf9\u8c61"（\u5df2\u7ecf new \u51fa\u6765） –> BeanPostProcessor \u5bb6\u65cf \/ FactoryBean
\n\u7b49"\u5c31\u7eea"（\u90fd\u9020\u597d\u4e86） –> SmartInitializingSingleton \/ \u5bb9\u5668\u4e8b\u4ef6 \/ SmartLifecycle \/ Runner<\/p>\n

\u672c\u6587\u63a5\u53e3\u7b7e\u540d\u6838\u5bf9\u81ea\u672c\u5730\u4ed3\u5e93\u7684 spring-beans 5.3.34 \u4e0e 6.2.7\u3001spring-boot 3.5.0；Spring 6 \u5df2\u5220\u9664 postProcessPropertyValues，\u6539\u7528 postProcessProperties\u3002<\/p>\n

\n

2. \u5bb9\u5668\u7ea7：BeanFactoryPostProcessor \u4e0e BeanDefinitionRegistryPostProcessor<\/h3>\n

Spring \u4e3b\u8981\u63d0\u4f9b\u4e24\u7c7b\u5bb9\u5668\u7ea7\u5207\u9762：BeanFactoryPostProcessor（\u4e0b\u79f0 BFPP）\u4e0e\u5b83\u7684\u5b50\u63a5\u53e3 BeanDefinitionRegistryPostProcessor（\u4e0b\u79f0 BDRPP）\u3002<\/p>\n

\u5171\u540c\u70b9：\u5b83\u4eec\u8dd1\u5728\u6240\u6709\u666e\u901a bean \u5b9e\u4f8b\u5316\u4e4b\u524d，\u6240\u4ee5\u624b\u4e0a\u53ea\u6709 BeanDefinition，\u6ca1\u6709\u5bf9\u8c61\u3002<\/p>\n

2.1 BFPP：\u6539\u914d\u7f6e\u5143\u6570\u636e<\/h4>\n

\u5b9e\u73b0 BFPP，\u53ef\u4ee5\u5728 Spring \u521b\u5efa bean \u4e4b\u524d\u8bfb\u53d6\u5e76\u4fee\u6539 bean \u7684\u5b9a\u4e49\u5c5e\u6027\u3002\u5f53 postProcessBeanFactory \u88ab\u8c03\u7528\u65f6，bean \u8fd8\u6ca1\u5b9e\u4f8b\u5316，\u521a\u4ece\u914d\u7f6e\u6587\u4ef6\/\u6ce8\u89e3\u89e3\u6790\u6210 BeanDefinition\u3002<\/p>\n

@Component<\/span>
\npublic<\/span> class<\/span> TestBeanFactoryPostProcessor<\/span> implements<\/span> BeanFactoryPostProcessor<\/span> {<\/span><\/p>\n

@Override<\/span>
\n public<\/span> void<\/span> postProcessBeanFactory<\/span>(<\/span>ConfigurableListableBeanFactory<\/span> beanFactory)<\/span> throws<\/span> BeansException<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"IOC \u5bb9\u5668\u8c03\u7528\u4e86 TestBeanFactoryPostProcessor \u7684 postProcessBeanFactory \u65b9\u6cd5"<\/span>)<\/span>;<\/span>
\n for<\/span> (<\/span>String<\/span> name :<\/span> beanFactory.<\/span>getBeanDefinitionNames<\/span>(<\/span>)<\/span>)<\/span> {<\/span>
\n if<\/span> (<\/span>"yjLog"<\/span>.<\/span>equals<\/span>(<\/span>name)<\/span>)<\/span> {<\/span>
\n BeanDefinition<\/span> beanDefinition =<\/span> beanFactory.<\/span>getBeanDefinition<\/span>(<\/span>name)<\/span>;<\/span>
\n \/\/ \u4f8b\u5982：\u628a\u67d0\u4e2a\u6c89\u91cd\u7684 bean \u6539\u6210\u61d2\u52a0\u8f7d<\/span>
\n beanDefinition.<\/span>setLazyInit<\/span>(<\/span>true<\/span>)<\/span>;<\/span>
\n }<\/span>
\n }<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

Spring \u5185\u7f6e\u4e86\u4e0d\u5c11 BFPP \u5b9e\u73b0，\u503c\u5f97\u5148\u770b\u4e00\u773c\u5b83\u4eec\u5404\u81ea\u89e3\u51b3\u4ec0\u4e48：<\/p>\n\n\u5185\u7f6e\u5b9e\u73b0\u5c5e\u4e8e\u5e72\u4ec0\u4e48<\/tr>\n\n\n\n\n\n\n
PropertySourcesPlaceholderConfigurer<\/td>\nBFPP<\/td>\n\u89e3\u6790 ${…} \u5360\u4f4d\u7b26，\u628a\u503c\u5199\u56de BeanDefinition<\/td>\n<\/tr>\n
PropertyOverrideConfigurer<\/td>\nBFPP<\/td>\n\u7528\u5c5e\u6027\u6587\u4ef6\u8986\u76d6\u5df2\u6709 bean \u7684\u5c5e\u6027<\/td>\n<\/tr>\n
CustomEditorConfigurer<\/td>\nBFPP<\/td>\n\u6ce8\u518c\u81ea\u5b9a\u4e49 PropertyEditor（String \u2192 \u590d\u6742\u7c7b\u578b）<\/td>\n<\/tr>\n
ConfigurationClassPostProcessor<\/td>\nBDRPP<\/td>\n\u89e3\u6790 @Configuration\/@ComponentScan\/@Import\/@Bean，\u628a\u6ce8\u89e3\u4e16\u754c\u7ffb\u8bd1\u6210 BeanDefinition<\/td>\n<\/tr>\n
MapperScannerConfigurer<\/td>\nBDRPP<\/td>\nMyBatis \u7684 @MapperScan，\u626b\u63cf\u63a5\u53e3\u5e76\u6ce8\u518c\u6210 bean<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2.2 BDRPP：\u52a8\u6001\u6ce8\u518c bean \u7684\u6b63\u786e\u59ff\u52bf<\/h4>\n

\u9700\u8981"\u8fd0\u884c\u65f6\u624d\u77e5\u9053\u8981\u6ce8\u518c\u54ea\u4e9b bean"\u65f6，\u53ea\u6709 BDRPP \u80fd\u5e72\u51c0\u5730\u505a\u5230\u2014\u2014\u5b83\u62ff\u5230\u7684\u662f BeanDefinitionRegistry，\u53ef\u4ee5\u76f4\u63a5\u5f80\u91cc\u585e\u5b9a\u4e49\u3002<\/p>\n

public<\/span> class<\/span> DynamicJobRegistrar<\/span> implements<\/span> BeanDefinitionRegistryPostProcessor<\/span> {<\/span><\/p>\n

@Override<\/span>
\n public<\/span> void<\/span> postProcessBeanDefinitionRegistry<\/span>(<\/span>BeanDefinitionRegistry<\/span> registry)<\/span> throws<\/span> BeansException<\/span> {<\/span>
\n for<\/span> (<\/span>JobMeta<\/span> job :<\/span> JobScanner<\/span>.<\/span>scan<\/span>(<\/span>)<\/span>)<\/span> {<\/span> \/\/ \u4f8b\u5982\u8bfb\u8868 \/ \u8bfb\u914d\u7f6e\u62ff\u5230\u4efb\u52a1\u6e05\u5355<\/span>
\n RootBeanDefinition<\/span> bd =<\/span> new<\/span> RootBeanDefinition<\/span>(<\/span>job.<\/span>getBeanClass<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
\n bd.<\/span>setScope<\/span>(<\/span>BeanDefinition<\/span>.<\/span>SCOPE_SINGLETON<\/span>)<\/span>;<\/span>
\n bd.<\/span>getPropertyValues<\/span>(<\/span>)<\/span>.<\/span>add<\/span>(<\/span>"cron"<\/span>,<\/span> job.<\/span>getCron<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
\n if<\/span> (<\/span>!<\/span>registry.<\/span>containsBeanDefinition<\/span>(<\/span>job.<\/span>getName<\/span>(<\/span>)<\/span>)<\/span>)<\/span> {<\/span> \/\/ \u5e42\u7b49：\u540c\u540d\u4f1a\u8986\u76d6，\u5148\u5224\u4e00\u4e0b<\/span>
\n registry.<\/span>registerBeanDefinition<\/span>(<\/span>job.<\/span>getName<\/span>(<\/span>)<\/span>,<\/span> bd)<\/span>;<\/span>
\n }<\/span>
\n }<\/span>
\n }<\/span><\/p>\n

@Override<\/span>
\n public<\/span> void<\/span> postProcessBeanFactory<\/span>(<\/span>ConfigurableListableBeanFactory<\/span> beanFactory)<\/span> throws<\/span> BeansException<\/span> {<\/span>
\n \/\/ \u8fd9\u91cc\u624d\u8f6e\u5230\u6539\u5df2\u6709\u5b9a\u4e49；BDRPP \u7ee7\u627f BFPP，\u4e24\u4e2a\u65b9\u6cd5\u90fd\u4f1a\u56de\u8c03<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

\u6267\u884c\u987a\u5e8f（PostProcessorRegistrationDelegate \u7684\u5b9e\u9645\u903b\u8f91）\u503c\u5f97\u5355\u72ec\u8bb0\u4f4f：<\/p>\n

BDRPP(PriorityOrdered) –> BDRPP(Ordered) –> \u5176\u4f59 BDRPP
\n –> \u3010\u6240\u6709 BDRPP \u7684 postProcessBeanFactory\u3011 –> BFPP(PriorityOrdered) –> BFPP(Ordered) –> \u5176\u4f59 BFPP<\/p>\n

\u5173\u952e\u70b9：\u53ea\u8981\u8fd8\u6709\u4e00\u4e2a BDRPP \u6ce8\u518c\u51fa\u4e86\u65b0\u7684\u540e\u5904\u7406\u5668\u5b9a\u4e49，\u6846\u67b6\u5c31\u4f1a\u91cd\u65b0\u626b\u4e00\u8f6e\u3002 \u8fd9\u5c31\u662f\u4e3a\u4ec0\u4e48 ConfigurationClassPostProcessor（PriorityOrdered）\u80fd\u5148\u628a\u4f60\u7684 @Bean \u65b9\u6cd5\u6ce8\u518c\u51fa\u6765，\u4f60\u518d\u5f80\u540e\u7eed\u8f6e\u6b21\u91cc\u6392\u961f\u3002<\/p>\n

Q1：\u4e3a\u4ec0\u4e48\u6211\u7684 BDRPP \u91cc getBean() \u62ff\u5230\u7684\u662f"\u534a\u6210\u54c1"？<\/h5>\n

\u56e0\u4e3a\u5b83\u8dd1\u5f97\u592a\u65e9\u3002\u6b64\u65f6 BeanPostProcessor \u8fd8\u6ca1\u6ce8\u518c\u5b8c，\u4f60 getBean \u51fa\u6765\u7684\u5bf9\u8c61\u4e0d\u4f1a\u7ecf\u8fc7 AOP \u4ee3\u7406\u3001\u4e0d\u4f1a\u8d70 @Autowired \u4e4b\u5916\u7684\u589e\u5f3a\u3002BDRPP\/BFPP \u91cc\u53ea\u5e94\u8be5\u64cd\u4f5c BeanDefinition，\u9700\u8981\u5b9e\u4f8b\u8bf7\u5ef6\u540e\u5230 SmartInitializingSingleton \u6216\u5bb9\u5668\u4e8b\u4ef6\u91cc\u3002<\/p>\n

Q2：BFPP \u548c BDRPP \u5230\u5e95\u600e\u4e48\u9009？<\/h5>\n\n\u9700\u6c42\u9009\u62e9<\/tr>\n\n\n\n\n
\u6539\u5df2\u6709 bean \u7684\u5b9a\u4e49（\u61d2\u52a0\u8f7d\u3001\u5c5e\u6027\u503c\u3001\u4f5c\u7528\u57df）<\/td>\nBeanFactoryPostProcessor<\/td>\n<\/tr>\n
\u65b0\u589e bean（\u626b\u63cf\u5305\u3001\u8bfb\u8868\u3001\u6309\u914d\u7f6e\u751f\u6210\u4e00\u6279）<\/td>\nBeanDefinitionRegistryPostProcessor<\/td>\n<\/tr>\n
\u5728\u6ce8\u89e3\u7c7b\u4e0a\u5f00\u5173\u4e00\u7ec4 bean<\/td>\nImportBeanDefinitionRegistrar（\u89c1\u7b2c 6 \u8282，\u66f4\u5185\u805a）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

3. Bean \u7ea7：BeanPostProcessor \u5bb6\u65cf<\/h3>\n

BFPP \u6539"\u56fe\u7eb8"，BeanPostProcessor \u6539"\u6210\u54c1"\u3002\u5b83\u7684\u4e24\u4e2a\u65b9\u6cd5\u5206\u522b\u5728 bean \u7684\u521d\u59cb\u5316\u65b9\u6cd5（InitializingBean \u6216 init-method）\u6267\u884c\u524d\u540e\u88ab\u8c03\u7528，\u56e0\u6b64\u5bb9\u5668\u521b\u5efa\u5bf9\u8c61\u540e\u4f60\u8fd8\u80fd\u7ee7\u7eed\u4fee\u6539\u8fd9\u4e2a\u5bf9\u8c61；\u5b9e\u9645\u8c03\u7528\u70b9\u5728 getBean() \u6d41\u7a0b\u91cc，\u6bcf\u4e2a bean \u90fd\u4f1a\u89e6\u53d1\u4e00\u6b21\u3002<\/p>\n

@Component<\/span>
\npublic<\/span> class<\/span> MyBeanPostProcessor<\/span> implements<\/span> BeanPostProcessor<\/span> {<\/span><\/p>\n

@Override<\/span>
\n public<\/span> Object<\/span> postProcessBeforeInitialization<\/span>(<\/span>Object<\/span> bean,<\/span> String<\/span> beanName)<\/span> throws<\/span> BeansException<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"postProcessBeforeInitialization====>"<\/span> +<\/span> beanName)<\/span>;<\/span>
\n \/\/ \u6bcf\u4e2a bean \u90fd\u4f1a\u8d70\u5230\u8fd9\u91cc，\u53ea\u5904\u7406\u76ee\u6807 bean \u65f6\u8981\u81ea\u5df1\u5224\u65ad<\/span>
\n if<\/span> (<\/span>"address"<\/span>.<\/span>equals<\/span>(<\/span>beanName)<\/span>)<\/span> {<\/span>
\n Address<\/span> address =<\/span> (<\/span>Address<\/span>)<\/span> bean;<\/span>
\n address.<\/span>setAddressName<\/span>(<\/span>"\u968f\u4fbf\u4e00\u4e2a\u5730\u5740\u540d\u5b57"<\/span>)<\/span>;<\/span>
\n }<\/span>
\n return<\/span> bean;<\/span>
\n }<\/span><\/p>\n

@Override<\/span>
\n public<\/span> Object<\/span> postProcessAfterInitialization<\/span>(<\/span>Object<\/span> bean,<\/span> String<\/span> beanName)<\/span> throws<\/span> BeansException<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"postProcessAfterInitialization======>"<\/span> +<\/span> beanName)<\/span>;<\/span>
\n return<\/span> bean;<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

\u6bd4\u5982\u4f60\u5728 xml \u91cc\u7ed9 address \u7684 addressName \u8bbe\u4e86\u503c，\u7136\u540e\u5728 BeanPostProcessor \u91cc\u6539\u6389\u5b83，\u4e4b\u540e\u901a\u8fc7\u5bb9\u5668 getBean \u62ff\u5230\u7684\u5c31\u662f\u4f60\u4fee\u6539\u540e\u7684\u5bf9\u8c61\u2014\u2014\u4f46\u4e0d\u8981\u8fd4\u56de null：applyBeanPostProcessorsBeforeInitialization \u9047\u5230 null \u4f1a\u76f4\u63a5\u8fd4\u56de\u524d\u4e00\u4e2a\u5904\u7406\u5668\u624b\u4e0a\u7684\u5b9e\u4f8b，\u5e76\u8df3\u8fc7\u540e\u9762\u6240\u6709 BeanPostProcessor，\u4f60\u7684 bean \u4f1a\u9759\u9ed8\u5c11\u6389\u4e00\u5c42\u589e\u5f3a（AOP \u5c31\u662f\u8fd9\u4e48\u4e22\u7684）\u3002<\/p>\n

BeanPostProcessor \u672c\u8eab\u53ea\u6709\u4e24\u4e2a\u65b9\u6cd5，\u80fd\u529b\u88ab\u62c6\u8fdb\u4e86\u5b50\u63a5\u53e3：<\/p>\n\n\u5b50\u63a5\u53e3\u65b9\u6cd5\u65f6\u673a\u5b98\u65b9\u8c01\u5728\u7528<\/tr>\n\n\n\n\n\n\n\n
InstantiationAwareBeanPostProcessor<\/td>\npostProcessBeforeInstantiation<\/td>\n\u6784\u9020\u4e4b\u524d（\u8fd4\u56de\u975e null \u5219\u77ed\u8def，\u540e\u7eed\u5168\u8df3\u8fc7）<\/td>\nAsyncAnnotationBeanPostProcessor（@Async \u63d0\u524d\u8fd4\u56de\u4ee3\u7406）<\/td>\n<\/tr>\n
<\/td>\npostProcessAfterInstantiation<\/td>\n\u6784\u9020\u4e4b\u540e\u3001\u6ce8\u5165\u4e4b\u524d（\u8fd4\u56de false \u8df3\u8fc7\u5c5e\u6027\u586b\u5145）<\/td>\n\u81ea\u5b9a\u4e49\u6ce8\u5165\u7b56\u7565<\/td>\n<\/tr>\n
<\/td>\npostProcessProperties<\/td>\n\u5c5e\u6027\u586b\u5145\u9636\u6bb5<\/td>\nAutowiredAnnotationBeanPostProcessor（@Autowired\/@Value）<\/td>\n<\/tr>\n
MergedBeanDefinitionPostProcessor<\/td>\npostProcessMergedBeanDefinition<\/td>\n\u5408\u5e76\u5b9a\u4e49\u540e，\u6536\u96c6\u5143\u6570\u636e<\/td>\n\u6ce8\u89e3\u5b57\u6bb5\/\u65b9\u6cd5\u7f13\u5b58，\u4f9b\u540e\u7eed\u6ce8\u5165\u4f7f\u7528<\/td>\n<\/tr>\n
DestructionAwareBeanPostProcessor<\/td>\npostProcessBeforeDestruction<\/td>\n\u9500\u6bc1\u524d<\/td>\nInitDestroyAnnotationBeanPostProcessor（@PreDestroy）<\/td>\n<\/tr>\n
BeanPostProcessor<\/td>\npostProcessAfterInitialization<\/td>\n\u521d\u59cb\u5316\u540e<\/td>\nAnnotationAwareAspectJAutoProxyCreator（AOP \u4ee3\u7406）\u3001SqlSessionFactoryBean \u5468\u8fb9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
Q3：\u4e3a\u4ec0\u4e48\u6211\u5728 BeanPostProcessor \u91cc getBean，\u65e5\u5fd7\u63d0\u793a "is not eligible for getting processed by all BeanPostProcessors"？<\/h5>\n

\u8fd9\u662f\u6700\u5e38\u89c1\u7684\u5751\u3002registerBeanPostProcessors \u9636\u6bb5\u4f1a\u6309 PriorityOrdered \u2192 Ordered \u2192 \u65e0\u5e8f \u5206\u6279\u5b9e\u4f8b\u5316 BPP；\u4f60\u5728 A \u8fd9\u4e2a BPP \u91cc getBean(B)，B \u5c31\u4f1a\u5728\u8fd9\u4e00\u523b\u88ab\u63d0\u524d\u521b\u5efa，\u800c\u5f53\u65f6\u540e\u9762\u7684 BPP \u8fd8\u6ca1\u6ce8\u518c\u5b8c，\u4e8e\u662f B \u53ea\u88ab\u524d\u9762\u4e00\u90e8\u5206 BPP \u5904\u7406\u8fc7\u2014\u2014\u5b83\u7684 AOP \u4ee3\u7406\u3001@Autowired \u53ef\u80fd\u5c31\u662f\u4e0d\u5b8c\u6574\u7684\u3002<\/p>\n

\u4e09\u6761\u5904\u7406\u539f\u5219：<\/p>\n

    \n
  • BPP \u7684\u4f9d\u8d56\u5c3d\u91cf\u53ea\u6ce8\u5165 BeanFactory \u672c\u8eab，\u4e0d\u8981\u5728\u6784\u9020\u671f\u53d6\u4e1a\u52a1 bean\u3002<\/li>\n
  • \u5728\u914d\u7f6e\u7c7b\u91cc\u7528 static @Bean \u65b9\u6cd5\u58f0\u660e BPP，\u907f\u514d\u6574\u4e2a\u914d\u7f6e\u7c7b\u88ab\u63d0\u524d\u5b9e\u4f8b\u5316：<\/li>\n<\/ul>\n

    @Configuration<\/span>
    \npublic<\/span> class<\/span> PostProcessorConfig<\/span> {<\/span>
    \n \/\/ static：Spring \u65e0\u9700\u5148\u5b9e\u4f8b\u5316\u914d\u7f6e\u7c7b\u5c31\u80fd\u62ff\u5230 BPP，\u907f\u514d"\u914d\u7f6e\u7c7b\u8fc7\u65e9\u521d\u59cb\u5316"<\/span>
    \n @Bean<\/span>
    \n public<\/span> static<\/span> MyBeanPostProcessor<\/span> myBeanPostProcessor<\/span>(<\/span>)<\/span> {<\/span>
    \n return<\/span> new<\/span> MyBeanPostProcessor<\/span>(<\/span>)<\/span>;<\/span>
    \n }<\/span>
    \n}<\/span><\/p>\n

      \n
    • \u591a\u4e2a BPP \u4e4b\u95f4\u6709\u5148\u540e\u8981\u6c42\u65f6，\u5b9e\u73b0 Ordered，\u522b\u6307\u671b\u5305\u626b\u63cf\u987a\u5e8f\u3002<\/li>\n<\/ul>\n
      \n

      4. \u4e0d\u60f3\u5199\u63a5\u53e3\u4e5f\u80fd\u6302：Aware\u3001\u521d\u59cb\u5316\u9500\u6bc1\u3001FactoryBean<\/h3>\n

      4.1 Aware \u5bb6\u65cf：\u8ba9 bean \u81ea\u5df1\u58f0\u660e"\u6211\u8981\u4ec0\u4e48"<\/h4>\n

      Aware \u8d70\u7684\u662f"\u56de\u8c03\u6ce8\u5165"，\u65f6\u673a\u5728\u5c5e\u6027\u586b\u5145\u4e4b\u540e\u3001\u521d\u59cb\u5316\u4e4b\u524d\u3002ApplicationContextAware \u5e76\u4e0d\u662f\u5bb9\u5668\u7279\u6b8a\u7167\u987e\u4f60，\u800c\u662f\u5185\u7f6e\u7684 ApplicationContextAwareProcessor（\u4e00\u4e2a BeanPostProcessor）\u5728 postProcessBeforeInitialization \u91cc\u5e2e\u4f60\u56de\u8c03\u7684\u3002<\/p>\n\n\u63a5\u53e3\u62ff\u5230\u4ec0\u4e48\u5e38\u89c1\u7528\u6cd5<\/tr>\n\n\n\n\n\n\n\n
      BeanNameAware<\/td>\n\u81ea\u5df1\u7684 beanName<\/td>\n\u65e5\u5fd7\u6253\u6807\u3001\u6ce8\u518c\u5230\u81ea\u8eab\u5de5\u5382<\/td>\n<\/tr>\n
      BeanFactoryAware<\/td>\nBeanFactory<\/td>\n\u6309\u9700 getBean\u3001\u62ff BeanDefinition<\/td>\n<\/tr>\n
      ApplicationContextAware<\/td>\nApplicationContext<\/td>\n\u53d1\u4e8b\u4ef6\u3001\u53d6 MessageSource\u3001\u6309\u7c7b\u578b\u6279\u91cf\u53d6 bean<\/td>\n<\/tr>\n
      EnvironmentAware<\/td>\nEnvironment<\/td>\n\u8bfb profile\u3001\u52a8\u6001\u914d\u7f6e<\/td>\n<\/tr>\n
      ResourceLoaderAware<\/td>\nResourceLoader<\/td>\n\u52a0\u8f7d classpath: \/ file: \u8d44\u6e90<\/td>\n<\/tr>\n
      EmbeddedValueResolverAware<\/td>\nStringValueResolver<\/td>\n\u624b\u52a8\u89e3\u6790 ${}（@Value \u4e4b\u5916\u7684\u573a\u666f）<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      \u80fd\u7528\u6784\u9020\u6ce8\u5165\u89e3\u51b3\u7684，\u5c31\u4e0d\u8981\u7528 Aware\u3002Aware \u4f1a\u8ba9 bean \u548c\u5bb9\u5668\u8026\u5408，\u5355\u6d4b\u65f6\u4f60\u5f97\u624b\u52a8\u8c03 setApplicationContext\u3002<\/p>\n

      4.2 \u521d\u59cb\u5316\u4e0e\u9500\u6bc1：\u4e09\u5957\u5199\u6cd5，\u4e00\u6b21\u6392\u597d\u5e8f<\/h4>\n

      \u6784\u9020 –> \u4f9d\u8d56\u6ce8\u5165 –> @PostConstruct –> afterPropertiesSet() –> init-method –> \u53ef\u7528
      \n \u2191
      \n \u9500\u6bc1\u65f6\u53cd\u5411：@PreDestroy –> destroy() –> destroy-method<\/p>\n\n\u5199\u6cd5\u6765\u6e90\u4f18\u70b9\u4ee3\u4ef7<\/tr>\n\n\n\n\n
      @PostConstruct \/ @PreDestroy<\/td>\nJSR-250<\/td>\n\u4e0d\u8026\u5408 Spring \u63a5\u53e3，\u4f4d\u7f6e\u8d34\u4ee3\u7801<\/td>\n\u9700\u8981 jakarta.annotation \u4f9d\u8d56<\/td>\n<\/tr>\n
      InitializingBean \/ DisposableBean<\/td>\nSpring<\/td>\n\u65e0\u9700\u6ce8\u89e3，\u660e\u786e<\/td>\n\u4ee3\u7801\u4fb5\u5165\u63a5\u53e3<\/td>\n<\/tr>\n
      @Bean(initMethod="x", destroyMethod="y") \/ xml init-method<\/td>\n\u914d\u7f6e<\/td>\n\u80fd\u7ba1\u7b2c\u4e09\u65b9\u7c7b（\u6e90\u7801\u4e0d\u5728\u4f60\u624b\u4e0a\u65f6\u552f\u4e00\u9009\u62e9）<\/td>\n\u65b9\u6cd5\u540d\u5b57\u7b26\u4e32，\u91cd\u6784\u6613\u6f0f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      \u7b14\u8005（\u540e\u7aef & \u67b6\u6784）\u7684\u9009\u62e9：\u81ea\u5df1\u7684\u7c7b\u4e00\u5f8b @PostConstruct；\u7b2c\u4e09\u65b9\u7ec4\u4ef6\u4e00\u5f8b @Bean(initMethod\/destroyMethod)；InitializingBean \u57fa\u672c\u4e0d\u65b0\u589e\u4f7f\u7528\u3002<\/p>\n

      4.3 FactoryBean：\u628a"\u600e\u4e48\u9020"\u4ea4\u7ed9\u4f60<\/h4>\n

      BeanPostProcessor \u662f\u62ff\u5230\u6210\u54c1\u518d\u6539，FactoryBean \u662f\u4ece\u96f6\u51b3\u5b9a\u8fd9\u4e2a\u5bf9\u8c61\u600e\u4e48\u4ea7\u751f\u2014\u2014\u9002\u5408\u6784\u9020\u8fc7\u7a0b\u590d\u6742\u3001\u6216\u4ea7\u54c1\u7c7b\u578b\u65e0\u6cd5\u76f4\u63a5\u58f0\u660e\u4e3a bean \u7684\u573a\u666f\u3002<\/p>\n

      public<\/span> class<\/span> RpcReferenceBean<\/span> implements<\/span> FactoryBean<\/span><<\/span>Object<\/span>><\/span><\/span> {<\/span><\/p>\n

      private<\/span> String<\/span> interfaceName;<\/span> \/\/ \u8fdc\u7a0b\u4ee3\u7406\u8981\u5b9e\u73b0\u7684\u63a5\u53e3<\/span>
      \n private<\/span> volatile<\/span> Object<\/span> cached;<\/span><\/p>\n

      @Override<\/span>
      \n public<\/span> Object<\/span> getObject<\/span>(<\/span>)<\/span> throws<\/span> Exception<\/span> {<\/span>
      \n if<\/span> (<\/span>cached ==<\/span> null<\/span>)<\/span> {<\/span>
      \n \/\/ \u8fd9\u91cc\u53ef\u4ee5\u52a8\u6001\u751f\u6210 JDK \u4ee3\u7406\u3001\u5efa\u7acb\u8fde\u63a5\u6c60\u7b49<\/span>
      \n cached =<\/span> ProxyFactory<\/span>.<\/span>createRef<\/span>(<\/span>Class<\/span>.<\/span>forName<\/span>(<\/span>interfaceName)<\/span>)<\/span>;<\/span>
      \n }<\/span>
      \n return<\/span> cached;<\/span>
      \n }<\/span><\/p>\n

      @Override<\/span>
      \n public<\/span> Class<\/span><<\/span>?<\/span>><\/span><\/span> getObjectType<\/span>(<\/span>)<\/span> {<\/span>
      \n return<\/span> cached ==<\/span> null<\/span> ?<\/span> null<\/span> :<\/span> cached.<\/span>getClass<\/span>(<\/span>)<\/span>.<\/span>getInterfaces<\/span>(<\/span>)<\/span>[<\/span>0<\/span>]<\/span>;<\/span>
      \n }<\/span><\/p>\n

      @Override<\/span>
      \n public<\/span> boolean<\/span> isSingleton<\/span>(<\/span>)<\/span> {<\/span>
      \n return<\/span> true<\/span>;<\/span> \/\/ true \u65f6\u5bb9\u5668\u53ea\u8c03\u4e00\u6b21 getObject \u5e76\u7f13\u5b58<\/span>
      \n }<\/span>
      \n}<\/span><\/p>\n

      \u4e09\u4e2a\u5bb9\u6613\u8e29\u7684\u70b9：<\/p>\n

        \n
      • getBean("rpcUserService") \u62ff\u5230\u7684\u662f getObject() \u7684\u4ea7\u54c1；\u8981\u62ff\u5de5\u5382\u672c\u8eab，\u540d\u5b57\u524d\u52a0 &：getBean("&rpcUserService")\u3002<\/li>\n
      • getObjectType() \u8fd4\u56de null \u4f1a\u8ba9\u6309\u7c7b\u578b\u6ce8\u5165\u9000\u5316，\u5bb9\u5668\u53ea\u80fd\u5b9e\u4f8b\u5316\u540e\u624d\u80fd\u786e\u8ba4\u7c7b\u578b，\u5bb9\u6613\u89e6\u53d1\u63d0\u524d\u521b\u5efa\u3002<\/li>\n
      • MyBatis \u7684 SqlSessionFactoryBean\u3001Dubbo \u7684 ReferenceBean \u90fd\u662f\u8fd9\u4e00\u6a21\u5f0f，\u770b\u61c2\u5b83\u4eec\u5c31\u770b\u61c2\u4e86\u534a\u4e2a\u751f\u6001\u3002<\/li>\n<\/ul>\n
        \n

        5. \u7b49\u4e00\u5207\u5c31\u7eea：\u4e8b\u4ef6\u3001SmartInitializingSingleton\u3001Runner<\/h3>\n

        \u5f88\u591a\u9700\u6c42\u672c\u8d28\u662f"\u522b\u6025\u7740\u5e72\u6d3b，\u7b49\u5bb9\u5668\u90fd\u88c5\u597d"\u3002Spring \u5728\u8fd9\u6761\u7ebf\u4e0a\u7ed9\u4e86\u56db\u4e2a\u4e0d\u540c\u6df1\u5ea6\u7684\u6302\u8f7d\u70b9\u3002<\/p>\n

        \u6240\u6709\u5355\u4f8b\u5b9e\u4f8b\u5316\u5b8c –> SmartInitializingSingleton –> ContextRefreshedEvent –> SmartLifecycle.start –> ApplicationStartedEvent –> ApplicationReadyEvent –> \u53ef\u63a5\u6d41\u91cf<\/p>\n\n\u673a\u5236\u89e6\u53d1\u8005\u65f6\u673a\u9002\u5408\u505a\u4ec0\u4e48\u5751<\/tr>\n\n\n\n\n\n\n
        SmartInitializingSingleton#afterSingletonsInstantiated<\/td>\n\u5bb9\u5668<\/td>\n\u5355\u4f8b\u5168\u90e8\u5c31\u7eea，\u4ecd\u5c5e finishBeanFactoryInitialization \u9636\u6bb5<\/td>\n\u6279\u91cf\u6821\u9a8c\u914d\u7f6e\u3001\u9884\u70ed\u672c\u5730\u7f13\u5b58<\/td>\n\u53ea\u6709\u5355\u4f8b\u4f1a\u88ab\u56de\u8c03；prototype \u4e0d\u7ba1<\/td>\n<\/tr>\n
        ApplicationListener \/ @EventListener<\/td>\nApplicationEventPublisher<\/td>\n\u4e8b\u4ef6\u53d1\u5e03\u65f6（\u5bb9\u5668\u4e8b\u4ef6\u9ed8\u8ba4\u540c\u6b65）<\/td>\n\u89e3\u8026"\u542f\u52a8\u5b8c\u6210\u540e\u901a\u77e5\u4e00\u6279\u4eba"<\/td>\n\u9ed8\u8ba4\u5728\u53d1\u5e03\u7ebf\u7a0b\u5185\u540c\u6b65\u6267\u884c，\u6162\u903b\u8f91\u4f1a\u62d6\u542f\u52a8<\/td>\n<\/tr>\n
        @EventListener + @Async<\/td>\n\u540c\u4e0a<\/td>\n\u4ea4\u7ed9\u7ebf\u7a0b\u6c60<\/td>\n\u4e0a\u62a5\u3001\u5237\u65b0\u5916\u90e8\u7f13\u5b58<\/td>\n\u9700\u8981 @EnableAsync，\u5f02\u5e38\u4e0d\u4f1a\u56de\u4f20<\/td>\n<\/tr>\n
        SmartLifecycle#start<\/td>\n\u5bb9\u5668 finishRefresh<\/td>\n\u5bb9\u5668\u4e8b\u4ef6\u9644\u8fd1，\u53d7 phase \u63a7\u5236\u987a\u5e8f<\/td>\nMQ \u6d88\u8d39\u8005\u3001\u5b9a\u65f6\u4efb\u52a1\u7684\u542f\u505c\u5bf9\u79f0<\/td>\nstop() \u5fc5\u987b\u771f\u7684\u80fd\u505c，\u5426\u5219\u4f18\u96c5\u4e0b\u7ebf\u5361\u4f4f<\/td>\n<\/tr>\n
        ApplicationRunner \/ CommandLineRunner（Boot）<\/td>\nSpringApplication.run<\/td>\n\u5728 ApplicationReadyEvent \u4e4b\u524d，\u4f46\u665a\u4e8e\u5bb9\u5668 refresh<\/td>\n\u4e00\u6b21\u6027\u4efb\u52a1\u3001CLI \u53c2\u6570\u5904\u7406<\/td>\n\u629b\u5f02\u5e38\u4f1a\u5bfc\u81f4\u542f\u52a8\u5931\u8d25<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        ApplicationListener \u4e0e @EventListener \u7684\u9009\u62e9：<\/p>\n

        \/\/ \u5199\u6cd5\u4e00：\u7c7b\u578b\u5316\u76d1\u542c\u5668，\u6cdb\u578b\u5373\u4e8b\u4ef6，\u65e0\u9700\u6ce8\u89e3<\/span>
        \n@Component<\/span>
        \npublic<\/span> class<\/span> CacheWarmUpListener<\/span> implements<\/span> ApplicationListener<\/span><<\/span>ContextRefreshedEvent<\/span>><\/span><\/span> {<\/span>
        \n @Override<\/span>
        \n public<\/span> void<\/span> onApplicationEvent<\/span>(<\/span>ContextRefreshedEvent<\/span> event)<\/span> {<\/span>
        \n \/\/ \u6ce8\u610f：\u7236\u5b50\u5bb9\u5668\/\u591a\u6b21 refresh \u4f1a\u88ab\u56de\u8c03\u591a\u6b21，\u4e1a\u52a1\u91cc\u8981\u505a\u5e42\u7b49<\/span>
        \n }<\/span>
        \n}<\/span><\/p>\n

        \/\/ \u5199\u6cd5\u4e8c：\u65b9\u6cd5\u7ea7\u76d1\u542c\u5668，\u4e00\u4e2a\u7c7b\u53ef\u4ee5\u76d1\u542c\u591a\u4e2a\u4e8b\u4ef6，\u8fd8\u80fd\u6392\u5e8f<\/span>
        \n@Component<\/span>
        \npublic<\/span> class<\/span> StartupHooks<\/span> {<\/span>
        \n @EventListener<\/span>(<\/span>classes =<\/span> ApplicationReadyEvent<\/span>.<\/span>class<\/span>)<\/span>
        \n @Order<\/span>(<\/span>1<\/span>)<\/span>
        \n public<\/span> void<\/span> ready<\/span>(<\/span>ApplicationReadyEvent<\/span> event)<\/span> {<\/span> \/* \u6ce8\u518c\u7f51\u5173\u3001\u4e0a\u62a5\u7248\u672c *\/<\/span> }<\/span>
        \n}<\/span><\/p>\n

        Q4：ContextRefreshedEvent \u548c ApplicationReadyEvent \u5dee\u5728\u54ea？\u8be5\u542c\u54ea\u4e2a？<\/h5>\n

        ContextRefreshedEvent \u662f Spring \u5bb9\u5668\u81ea\u5df1\u7684\u4e8b\u4ef6，\u53ea\u8868\u793a"\u8fd9\u4e2a context \u5237\u65b0\u5b8c\u4e86"；\u7236\u5b50\u5bb9\u5668\u573a\u666f\u4f1a\u6536\u5230\u591a\u6b21，\u7eaf Spring MVC（\u975e Boot）\u9879\u76ee\u91cc\u4e5f\u53ea\u6709\u5b83\u3002ApplicationStartedEvent \/ ApplicationReadyEvent \u662f Boot \u5728 run() \u91cc\u7531 SpringApplicationRunListener \u8865\u53d1\u7684，\u8bed\u4e49\u662f"\u5e94\u7528\u6574\u4f53\u8d77\u6765\u4e86（\u542b runner\u3001Web \u7aef\u53e3\u5c31\u7eea）"\u3002<\/p>\n

        \u7ed3\u8bba：Boot \u9879\u76ee\u91cc"\u80fd\u63a5\u6d41\u91cf\/\u80fd\u5bf9\u5916\u66b4\u9732"\u7684\u94a9\u5b50\u7528 ApplicationReadyEvent；\u5fc5\u987b\u5728\u5bb9\u5668\u9636\u6bb5\u5b8c\u6210\u521d\u59cb\u5316\u7684\u7528 ContextRefreshedEvent \u6216\u76f4\u63a5 SmartInitializingSingleton（\u66f4\u65e9，\u4e14\u4e0d\u4f9d\u8d56\u4e8b\u4ef6）\u3002<\/p>\n

        \n

        6. \u52a8\u6001\u6ce8\u518c\u4e0e\u5f00\u5173：@Import\u3001ImportBeanDefinitionRegistrar\u3001@Conditional<\/h3>\n

        Spring \u81ea\u8eab\u5927\u91cf\u4f7f\u7528\u7b2c 2\u30013 \u8282\u90a3\u4e9b\u63a5\u53e3，\u4f46\u7ed9\u4e1a\u52a1\u65b9\u7559\u4e86\u4e2a\u66f4\u5185\u805a\u7684\u5165\u53e3：\u6ce8\u89e3\u9a71\u52a8\u7684\u6ce8\u518c\u3002@EnableXxx \u90a3\u4e00\u65cf\u57fa\u672c\u90fd\u662f @Import + Selector\/Registrar + @Conditional \u7684\u7ec4\u5408\u62f3\u3002<\/p>\n\n\u624b\u6bb5\u4f60\u80fd\u51b3\u5b9a\u4ec0\u4e48\u8fd4\u56de\/\u64cd\u4f5c\u5178\u578b\u573a\u666f<\/tr>\n\n\n\n\n\n\n
        @Import(Config.class)<\/td>\n\u5bfc\u5165\u54ea\u51e0\u4e2a\u7c7b<\/td>\n\u76f4\u63a5\u5199\u6b7b<\/td>\n\u6a21\u5757\u5185\u90e8\u88c5\u914d<\/td>\n<\/tr>\n
        ImportSelector<\/td>\n\u6309\u6761\u4ef6\u5bfc\u5165\u54ea\u4e9b\u914d\u7f6e\u7c7b<\/td>\n\u8fd4\u56de\u7c7b\u540d\u5b57\u7b26\u4e32\u6570\u7ec4<\/td>\n@EnableTransactionManagement\u3001\u81ea\u52a8\u914d\u7f6e\u6392\u5e8f<\/td>\n<\/tr>\n
        DeferredImportSelector<\/td>\n\u540c\u4e0a，\u4e14\u665a\u4e8e\u5176\u4ed6\u914d\u7f6e\u7c7b\u89e3\u6790<\/td>\n\u8fd4\u56de\u7c7b\u540d<\/td>\nBoot \u81ea\u52a8\u914d\u7f6e\u5c31\u9760\u5b83<\/td>\n<\/tr>\n
        ImportBeanDefinitionRegistrar<\/td>\n\u624b\u5de5\u6ce8\u518c\u4efb\u610f BeanDefinition<\/td>\n\u76f4\u63a5\u64cd\u4f5c registry<\/td>\n@MapperScan\u3001\u81ea\u5b9a\u4e49 @Enable* \u751f\u6210\u4e00\u6279 bean<\/td>\n<\/tr>\n
        @Conditional<\/td>\n\u8fd9\u4e2a bean \u88c5\u4e0d\u88c5<\/td>\n\u8fd4\u56de boolean<\/td>\nstarter \u7684"\u4f60\u6ca1\u914d\u6211\u5c31\u4e0d\u542f\u7528"<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \u4e00\u4e2a\u80fd\u76f4\u63a5\u6284\u8d70\u7684\u6700\u5c0f\u5b8c\u6574\u4f8b\u5b50：\u7528\u6ce8\u89e3\u5f00\u5173\u52a8\u6001\u6ce8\u518c\u4e00\u4e2a\u62e6\u622a\u5668\u3002<\/p>\n

        @Retention<\/span>(<\/span>RetentionPolicy<\/span>.<\/span>RUNTIME<\/span>)<\/span>
        \n@Target<\/span>(<\/span>ElementType<\/span>.<\/span>TYPE<\/span>)<\/span>
        \n@Import<\/span>(<\/span>SignatureRegistrar<\/span>.<\/span>class<\/span>)<\/span>
        \npublic<\/span> @interface<\/span> EnableApiSignature<\/span> {<\/span>
        \n String<\/span> headerName<\/span>(<\/span>)<\/span> default<\/span> "X-Sign"<\/span>;<\/span>
        \n boolean<\/span> enabled<\/span>(<\/span>)<\/span> default<\/span> true<\/span>;<\/span>
        \n}<\/span><\/p>\n

        public<\/span> class<\/span> SignatureRegistrar<\/span> implements<\/span> ImportBeanDefinitionRegistrar<\/span> {<\/span><\/p>\n

        @Override<\/span>
        \n public<\/span> void<\/span> registerBeanDefinitions<\/span>(<\/span>AnnotationMetadata<\/span> meta,<\/span> BeanDefinitionRegistry<\/span> registry)<\/span> {<\/span>
        \n Map<\/span><<\/span>String<\/span>,<\/span> Object<\/span>><\/span><\/span> attrs =<\/span> meta.<\/span>getAnnotationAttributes<\/span>(<\/span>EnableApiSignature<\/span>.<\/span>class<\/span>.<\/span>getName<\/span>(<\/span>)<\/span>)<\/span>;<\/span>
        \n if<\/span> (<\/span>attrs ==<\/span> null<\/span> ||<\/span> !<\/span>Boolean<\/span>.<\/span>TRUE<\/span>.<\/span>equals<\/span>(<\/span>attrs.<\/span>get<\/span>(<\/span>"enabled"<\/span>)<\/span>)<\/span>)<\/span> {<\/span>
        \n return<\/span>;<\/span> \/\/ \u6ce8\u89e3\u6ca1\u5199\u6216\u663e\u5f0f\u5173\u95ed，\u76f4\u63a5\u4e0d\u6ce8\u518c<\/span>
        \n }<\/span>
        \n RootBeanDefinition<\/span> bd =<\/span> new<\/span> RootBeanDefinition<\/span>(<\/span>SignatureInterceptor<\/span>.<\/span>class<\/span>)<\/span>;<\/span>
        \n \/\/ \u53ea\u628a\u53c2\u6570\u5199\u8fdb\u5b9a\u4e49，\u4ea4\u7ed9\u76ee\u6807 bean \u81ea\u5df1\u53bb\u8981\u4f9d\u8d56 \u2014\u2014 Registrar \u9636\u6bb5\u4e0d\u8981\u78b0\u5b9e\u4f8b<\/span>
        \n bd.<\/span>getConstructorArgumentValues<\/span>(<\/span>)<\/span>.<\/span>addIndexedArgumentValue<\/span>(<\/span>0<\/span>,<\/span> attrs.<\/span>get<\/span>(<\/span>"headerName"<\/span>)<\/span>)<\/span>;<\/span>
        \n if<\/span> (<\/span>!<\/span>registry.<\/span>containsBeanDefinition<\/span>(<\/span>"signatureInterceptor"<\/span>)<\/span>)<\/span> {<\/span>
        \n registry.<\/span>registerBeanDefinition<\/span>(<\/span>"signatureInterceptor"<\/span>,<\/span> bd)<\/span>;<\/span>
        \n }<\/span>
        \n }<\/span>
        \n}<\/span><\/p>\n

        \u81ea\u5b9a\u4e49\u6761\u4ef6：<\/p>\n

        public<\/span> class<\/span> OnFeatureEnabled<\/span> implements<\/span> Condition<\/span> {<\/span>
        \n @Override<\/span>
        \n public<\/span> boolean<\/span> matches<\/span>(<\/span>ConditionContext<\/span> ctx,<\/span> AnnotatedTypeMetadata<\/span> meta)<\/span> {<\/span>
        \n return<\/span> Boolean<\/span>.<\/span>parseBoolean<\/span>(<\/span>ctx.<\/span>getEnvironment<\/span>(<\/span>)<\/span>.<\/span>getProperty<\/span>(<\/span>"feature.sign"<\/span>,<\/span> "false"<\/span>)<\/span>)<\/span>;<\/span>
        \n }<\/span>
        \n}<\/span><\/p>\n

        @Configuration<\/span>
        \n@Conditional<\/span>(<\/span>OnFeatureEnabled<\/span>.<\/span>class<\/span>)<\/span>
        \npublic<\/span> class<\/span> SignatureConfig<\/span> {<\/span> \/* \u53ea\u6709\u5f00\u5173\u6253\u5f00\u624d\u4f1a\u88ab\u89e3\u6790\u6210 bean *\/<\/span> }<\/span><\/p>\n

        @ConditionalOnProperty \/ @ConditionalOnClass \/ @ConditionalOnMissingBean \u662f Boot \u63d0\u4f9b\u7684\u73b0\u6210\u5b9e\u73b0，@ConditionalOnMissingBean \u66f4\u662f starter \u91cc"\u7528\u6237\u6ca1\u5b9a\u4e49\u6211\u624d\u515c\u5e95"\u7684\u6807\u51c6\u5199\u6cd5\u3002<\/p>\n

        \u628a\u8fd9\u4e00\u8282\u7684\u4e09\u4e2a\u89d2\u8272\u4e32\u8d77\u6765，@Enable* \u7684\u5f62\u72b6\u5c31\u662f\u8fd9\u6837\u7684：<\/p>\n

        \"\u6ce8\u89e3\u9a71\u52a8\u7684\u6ce8\u518c\uff1a@Enable<\/p>\n

        Registrar \u4e0e Selector \u91cc\u53ea\u505a"\u6ce8\u518c"，\u4e0d\u8981\u6ce8\u5165\u4f9d\u8d56\u3001\u4e0d\u8981 getBean\u3002 \u9700\u8981\u914d\u7f6e\u503c\u5c31\u585e\u8fdb BeanDefinition \u7684\u6784\u9020\u53c2\u6570\u6216\u5c5e\u6027，\u8ba9\u88ab\u6ce8\u518c\u51fa\u6765\u7684 bean \u81ea\u5df1\u7528 @Value \/ Environment \u62ff\u3002<\/p>\n

        \n

        7. Web \u5c42\u4e0e Boot \u5c42：\u8fd8\u6709\u4e00\u6279\u9ad8\u9891\u6302\u8f7d\u70b9<\/h3>\n

        7.1 \u4e00\u6b21 HTTP \u8bf7\u6c42\u4e0a\u7684\u5207\u9762<\/h4>\n

        \u8bf7\u6c42 –> Filter(Servlet \u5bb9\u5668) –> DispatcherServlet –> preHandle –> Interceptor –> Controller
        \n –> postHandle –> afterCompletion(\u9006\u5e8f)<\/p>\n\n\u7ef4\u5ea6FilterHandlerInterceptor<\/tr>\n\n\n\n\n\n
        \u89c4\u8303\u6765\u6e90<\/td>\nServlet \u89c4\u8303<\/td>\nSpring MVC<\/td>\n<\/tr>\n
        \u80fd\u62ff\u5230 handler \u65b9\u6cd5<\/td>\n\u4e0d\u80fd<\/td>\n\u80fd（HandlerMethod，\u53ef\u8bfb\u5230\u6ce8\u89e3）<\/td>\n<\/tr>\n
        \u80fd\u5426\u76f4\u63a5\u6ce8\u5165 Spring bean<\/td>\n\u53d6\u51b3\u4e8e\u6ce8\u518c\u65b9\u5f0f，FilterRegistrationBean \u53ef\u4ee5<\/td>\n\u53ef\u4ee5（\u672c\u8eab\u7531\u5bb9\u5668\u7ba1\u7406）<\/td>\n<\/tr>\n
        \u5178\u578b\u7528\u9014<\/td>\n\u7f16\u7801\u3001XSS\u3001\u8de8\u57df\u3001\u9650\u6d41\u3001\u8bf7\u6c42\u4f53\u7f13\u5b58<\/td>\n\u9274\u6743\u3001\u63a5\u53e3\u7b7e\u540d\u3001\u8017\u65f6\u57cb\u70b9<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \u914d\u5957\u7684\u8fd8\u6709 WebMvcConfigurer（addInterceptors \/ extendMessageConverters \/ addFormatters \/ addCorsMappings）\u3001HandlerMethodArgumentResolver（\u81ea\u5b9a\u4e49 @CurrentUser \u8fd9\u7c7b\u53c2\u6570\u89e3\u6790）\u3001ResponseBodyAdvice + @RestControllerAdvice（\u7edf\u4e00\u8fd4\u56de\u5305\u88c5\u4e0e\u52a0\u7b7e）\u3002<\/p>\n

        7.2 Boot \u542f\u52a8\u94fe\u4e0a\u7684\u6269\u5c55\u70b9<\/h4>\n\n\u6269\u5c55\u70b9\u65f6\u673a\u80fd\u5e72\u7684\u4e8b<\/tr>\n\n\n\n\n\n\n\n
        EnvironmentPostProcessor<\/td>\n\u73af\u5883\u51c6\u5907\u5b8c\u3001\u5bb9\u5668\u521b\u5efa\u524d<\/td>\n\u914d\u7f6e\u89e3\u5bc6\u3001\u6ce8\u5165\u5916\u90e8\u914d\u7f6e\u6e90（spring.config.import \u4e4b\u5916\u7684\u515c\u5e95）<\/td>\n<\/tr>\n
        ApplicationContextInitializer<\/td>\nApplicationContext \u521b\u5efa\u540e\u3001refresh \u524d<\/td>\n\u63d0\u524d\u6ce8\u518c bean \u5b9a\u4e49\u3001profile \u8865\u5145<\/td>\n<\/tr>\n
        SpringApplicationRunListener<\/td>\n\u8d2f\u7a7f run() \u5404\u9636\u6bb5<\/td>\n\u57cb\u70b9\u3001\u53d1\u5e03\u81ea\u5b9a\u4e49\u751f\u547d\u5468\u671f\u4e8b\u4ef6（ApplicationReadyEvent \u5c31\u662f\u5b83\u53d1\u7684）<\/td>\n<\/tr>\n
        FailureAnalyzer<\/td>\n\u542f\u52a8\u5931\u8d25\u65f6<\/td>\n\u628a BeanCreationException \u7ffb\u8bd1\u6210\u4eba\u8bdd（starter \u4f53\u9a8c\u4f18\u5316）<\/td>\n<\/tr>\n
        @AutoConfiguration + AutoConfiguration.imports<\/td>\n\u5bb9\u5668 refresh \u65f6<\/td>\nstarter \u5bf9\u5916\u66b4\u9732\u9ed8\u8ba4\u914d\u7f6e<\/td>\n<\/tr>\n
        @ConfigurationProperties + Binder<\/td>\n\u5c5e\u6027\u7ed1\u5b9a\u671f<\/td>\n\u7ed3\u6784\u5316\u914d\u7f6e\u3001\u6279\u91cf\u6821\u9a8c<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \u81ea\u52a8\u914d\u7f6e\u7684\u58f0\u660e\u6587\u4ef6\u5728\u672c\u5730 Boot 3.5.0 \u7684 spring-boot-autoconfigure \u5305\u91cc\u4e24\u4e2a\u6587\u4ef6\u662f\u540c\u65f6\u5b58\u5728\u7684，\u5b9e\u9645\u751f\u6548\u9879\u5df2\u7ecf\u8d70 imports：<\/p>\n

        META-INF\/spring\/org.springframework.boot.autoconfigure.AutoConfiguration.imports # 2.7 \u8d77，\u81ea\u52a8\u914d\u7f6e\u4e13\u7528
        \nMETA-INF\/spring.factories # \u5176\u4f59 SPI \u4ecd\u5728\u7528（EnvironmentPostProcessor \u7b49）<\/p>\n

        @ConditionalOnMissingBean \u52a0\u4e0a\u81ea\u52a8\u914d\u7f6e\u7684\u6392\u5e8f（@AutoConfigureAfter \/ AutoConfigurationMetadata）\u51b3\u5b9a\u4e86\u5b83"\u6c38\u8fdc\u6392\u5728\u7528\u6237\u914d\u7f6e\u540e\u9762"，\u8fd9\u4e5f\u662f starter \u80fd"\u914d\u4e86\u5c31\u8d62"\u7684\u539f\u56e0\u3002<\/p>\n

        7.3 \u9700\u6c42 \u2192 \u6269\u5c55\u70b9\u901f\u67e5（\u5982\u679c\u662f\u6211，\u6211\u4f1a\u8fd9\u4e48\u9009）<\/h4>\n\n\u6211\u7684\u9700\u6c42\u9996\u9009\u6b21\u9009\u4e0d\u5efa\u8bae<\/tr>\n\n\n\n\n\n\n\n\n\n
        \u542f\u52a8\u65f6\u6309\u8868\/\u914d\u7f6e\u52a8\u6001\u6ce8\u518c\u4e00\u6279 bean<\/td>\nBeanDefinitionRegistryPostProcessor<\/td>\nImportBeanDefinitionRegistrar<\/td>\n\u5728 @PostConstruct \u91cc registerBeanDefinition<\/td>\n<\/tr>\n
        \u7ed9\u67d0\u7c7b bean \u7edf\u4e00\u52a0\u4ee3\u7406\/\u5305\u88c5<\/td>\nBeanPostProcessor#postProcessAfterInitialization<\/td>\n@Aspect + @Around<\/td>\n\u624b\u5199\u7ee7\u627f\u8986\u76d6<\/td>\n<\/tr>\n
        \u4fee\u6539\u6240\u6709 bean \u7684\u67d0\u4e2a\u5c5e\u6027\u521d\u503c<\/td>\nBFPP \u6539 BeanDefinition<\/td>\nBPP \u6539\u5b9e\u4f8b<\/td>\n\u53cd\u5c04\u626b\u63cf<\/td>\n<\/tr>\n
        \u8ba9\u7b2c\u4e09\u65b9 jar \u91cc\u7684\u7c7b\u53ef\u914d\u7f6e<\/td>\n@Bean(initMethod\/destroyMethod) + @ConfigurationProperties<\/td>\nFactoryBean<\/td>\n\u6539\u5bf9\u65b9\u6e90\u7801<\/td>\n<\/tr>\n
        \u542f\u52a8\u540e\u9884\u70ed\u672c\u5730\u7f13\u5b58<\/td>\nSmartInitializingSingleton<\/td>\nContextRefreshedEvent<\/td>\n\u5728\u6784\u9020\u51fd\u6570\u91cc\u5e72\u6d3b<\/td>\n<\/tr>\n
        \u8d77\u6765\u4e4b\u540e\u518d\u901a\u77e5\u5916\u90e8\u7cfb\u7edf<\/td>\nApplicationReadyEvent<\/td>\nApplicationRunner<\/td>\n@PostConstruct<\/td>\n<\/tr>\n
        \u505a\u4e00\u4e2a\u53ef\u5f00\u5173\u7684 starter<\/td>\n@Enable* + Registrar + @Conditional*<\/td>\n\u7eaf\u81ea\u52a8\u914d\u7f6e<\/td>\n\u9760 README \u63d0\u9192\u7528\u6237\u6ce8\u91ca\u4ee3\u7801<\/td>\n<\/tr>\n
        \u7edf\u4e00\u52a0\u7b7e \/ \u9274\u6743 \/ \u54cd\u5e94\u5305\u88c5<\/td>\nHandlerInterceptor + ResponseBodyAdvice<\/td>\nFilter（\u8981\u8bfb\u539f\u59cb\u6d41\u65f6）<\/td>\n\u6bcf\u4e2a Controller \u590d\u5236\u7c98\u8d34<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        \u4e00\u4e2a\u901a\u7528\u539f\u5219：\u8d8a\u9760\u524d\u7684\u6269\u5c55\u70b9\u8d8a\u5c11\u7528\u3002 BDRPP\/BFPP \u53ea\u80fd\u78b0\u5b9a\u4e49，\u8d8a\u65e9\u6267\u884c\u5bf9\u540e\u6765\u8d8a\u4e0d\u53ef\u89c1；\u80fd\u5728 Bean \u7ea7\u6216\u4e8b\u4ef6\u7ea7\u89e3\u51b3\u7684\u95ee\u9898，\u4e0d\u8981\u5f80\u5bb9\u5668\u7ea7\u63d0\u524d\u3002<\/p>\n

        \n

        \u6700\u540e\u603b\u7ed3<\/h3>\n
          \n
        • \u5982\u679c\u53ea\u60f3\u8bb0\u4e00\u53e5\u8bdd： \u6539"\u56fe\u7eb8"\u7528 BFPP \/ BDRPP，\u6539"\u5bf9\u8c61"\u7528 BeanPostProcessor \u5bb6\u65cf，"\u7b49\u5c31\u7eea"\u7528 SmartInitializingSingleton \/ \u5bb9\u5668\u4e8b\u4ef6 \/ Runner，"\u7ed9\u522b\u4eba\u7528"\u7528 @Import + @Conditional\u3002<\/li>\n
        • \u5982\u679c\u662f\u4e1a\u52a1\u4ee3\u7801\u91cc\u7b2c\u4e00\u6b21\u5f15\u5165\u6269\u5c55\u70b9： \u4f18\u5148 @PostConstruct + @Bean(initMethod) + ApplicationReadyEvent \u8fd9\u4e09\u4ef6\u5957，\u591f\u7528\u4e14\u8026\u5408\u6700\u5c0f\u3002<\/li>\n
        • \u5982\u679c\u4f60\u5728\u5199\u6846\u67b6\u6216 starter： \u5fc5\u987b\u638c\u63e1 BeanDefinitionRegistryPostProcessor\u3001FactoryBean\u3001ImportBeanDefinitionRegistrar\u3001@Conditional，Spring \u751f\u6001（MyBatis\u3001Dubbo\u3001Boot starter）\u51e0\u4e4e\u90fd\u662f\u8fd9\u56db\u4e2a\u7684\u7ec4\u5408\u3002<\/li>\n
        • \u5bf9\u4e8e\u540e\u7aef \/ \u67b6\u6784\u5f00\u53d1\u8005，\u6211\u4e2a\u4eba\u6700\u770b\u91cd\u7684\u662f\u8fd9\u51e0\u70b9\u5de5\u7a0b\u7ea6\u675f： \u5bb9\u5668\u7ea7\u6269\u5c55\u70b9\u91cc\u7edd\u4e0d\u53d6\u5b9e\u4f8b；BeanPostProcessor \u7528 static @Bean \u66b4\u9732\u5e76\u663e\u5f0f Ordered；\u6240\u6709"\u542f\u52a8\u540e\u94a9\u5b50"\u90fd\u8981\u5199\u5e42\u7b49（\u7236\u5b50\u5bb9\u5668\u3001\u591a\u6b21 refresh\u3001\u91cd\u542f\u90fd\u4f1a\u91cd\u653e）；\u6ce8\u518c BeanDefinition \u524d\u5148 containsBeanDefinition\u3002<\/li>\n<\/ul>\n

          \u6269\u5c55\u70b9\u672c\u8eab\u4e0d\u503c\u94b1，\u503c\u94b1\u7684\u662f"\u77e5\u9053\u54ea\u4e2a\u5207\u9762\u80fd\u770b\u5230\u4ec0\u4e48\u3001\u770b\u4e0d\u5230\u4ec0\u4e48"\u3002\u628a\u7b2c 1 \u8282\u90a3\u4e24\u6761\u65f6\u95f4\u7ebf\u8bb0\u4f4f，\u5269\u4e0b\u7684\u90fd\u662f\u67e5\u8868\u3002<\/p>\n

          \u53c2\u8003\u8d44\u6599 & \u81f4\u8c22<\/h3>\n

          [1] Spring \u5e38\u7528\u6269\u5c55\u70b9（CSDN） [2] \u76d8\u70b9 Spring\/Boot \u7684\u90a3\u4e9b\u5e38\u7528\u6269\u5c55\u70b9（CSDN） [3] Spring Framework \u5b98\u65b9\u6587\u6863 – Bean \u5bb9\u5668\u4e0e\u6269\u5c55\u63a5\u53e3 [4] Spring Boot 2.7.0 M2 Release Notes – \u81ea\u52a8\u914d\u7f6e\u6539\u7528 AutoConfiguration.imports [5] Spring Boot \u5b98\u65b9\u6587\u6863 – \u81ea\u52a8\u914d\u7f6e\u4e0e starter<\/p>\n

          \u7248\u672c\u4e0e\u5f85\u6838\u5b9e\u8bf4\u660e：<\/p>\n

            \n
          • \u672c\u6587\u63a5\u53e3\u7b7e\u540d\u4e8e 2026-09-26 \u7528 javap \u76f4\u63a5\u6838\u5bf9\u81ea\u672c\u673a Maven \u4ed3\u5e93\u4e2d\u7684 spring-beans \/ spring-context 5.3.34\u30016.2.7 \u4e0e spring-boot \/ spring-boot-autoconfigure 2.7.18\u30013.5.0 \u7684 jar \u5305，\u4e0d\u662f\u51ed\u8bb0\u5fc6\u63cf\u8ff0\u3002<\/li>\n
          • \u5df2\u6838\u5b9e\u4e8b\u5b9e：InstantiationAwareBeanPostProcessor \u5728 5.3 \u4e2d\u4ecd\u4fdd\u7559 postProcessPropertyValues（\u5df2\u5e9f\u5f03），6.2.7 \u4e2d\u5df2\u5220\u9664，\u53ea\u5269 postProcessBeforeInstantiation \/ postProcessAfterInstantiation \/ postProcessProperties；BeanDefinitionRegistryPostProcessor \u4f4d\u4e8e org.springframework.beans.factory.support \u5305\u4e14\u7ee7\u627f BeanFactoryPostProcessor；ConfigurationClassPostProcessor \u5b9e\u73b0 BeanDefinitionRegistryPostProcessor \u4e14\u4e3a PriorityOrdered；FactoryBean#getObjectType() \u8fd4\u56de Class<?>（\u65e0\u6cdb\u578b\u53c2\u6570）\u3002<\/li>\n
          • \u5df2\u6838\u5b9e\u4e8b\u5b9e：\u672c\u5730 Boot 3.5.0 \u7684 spring-boot-autoconfigure \u5305\u5185 META-INF\/spring\/org.springframework.boot.autoconfigure.AutoConfiguration.imports \u4e0e META-INF\/spring.factories \u540c\u65f6\u5b58\u5728，\u524d\u8005\u662f\u81ea\u52a8\u914d\u7f6e\u58f0\u660e\u5165\u53e3\u3002<\/li>\n
          • \u5df2\u6838\u5b9e\u4e8b\u5b9e（javap -c \u53cd\u8bfb\u5b57\u8282\u7801）：AbstractAutowireCapableBeanFactory#applyBeanPostProcessorsBeforeInitialization \u5728\u67d0\u4e2a\u5904\u7406\u5668\u8fd4\u56de null \u65f6，\u4f1a\u8fd4\u56de\u8be5\u5904\u7406\u5668\u5165\u53c2\u4e4b\u524d\u7684\u5b9e\u4f8b\u5e76\u7ec8\u6b62\u904d\u5386\u5269\u4f59\u5904\u7406\u5668；MergedBeanDefinitionPostProcessor \u4f4d\u4e8e org.springframework.beans.factory.support \u5305（\u4e0d\u662f config \u5305）\u3002<\/li>\n
          • \u5df2\u6838\u5b9e\u4e8b\u5b9e：\u989d\u5916\u5bf9 spring-beans 7.0.9 \u505a\u4e86\u62bd\u67e5，\u672c\u6587\u7528\u5230\u7684\u63a5\u53e3（BeanPostProcessor\u3001InstantiationAwareBeanPostProcessor\u3001SmartInstantiationAwareBeanPostProcessor\u3001DestructionAwareBeanPostProcessor\u3001MergedBeanDefinitionPostProcessor\u3001FactoryBean）\u5728 7.0.9 \u4e2d\u4ecd\u5b58\u5728\u4e14\u5f62\u6001\u4e00\u81f4\u3002<\/li>\n
          • \u672a\u9010\u6761\u6838\u5b9e：EnvironmentPostProcessor\u3001ApplicationContextInitializer\u3001SpringApplicationRunListener\u3001FailureAnalyzer \u7684\u7cbe\u786e\u6267\u884c\u95f4\u9694\u70b9（\u672c\u6587\u6309\u5b98\u65b9\u6587\u6863\u8bed\u4e49\u63cf\u8ff0，\u672a\u5728 3.x\/4.x \u6e90\u7801\u9010\u884c\u5bf9\u7167）；\u6587\u4e2d\u7c7b\u540d\u4e0e\u65b9\u6cd5\u540d\u5728\u4e0a\u8ff0 jar \u4e2d\u5df2\u786e\u8ba4\u5b58\u5728\u3002<\/li>\n
          • \u672a\u6838\u5b9e\u9879：\u8bfb\u8005\u73af\u5883\u7684 Spring \/ Spring Boot \u7248\u672c\u672a\u77e5\u3002Spring Boot 4.x（\u82e5\u4f60\u5df2\u5728\u7528）\u4e2d\u90e8\u5206\u6269\u5c55\u70b9\u5b58\u5728\u5305\u8def\u5f84\u4e0e\u6392\u5e8f\u8bed\u4e49\u8c03\u6574，\u672c\u6587\u672a\u8986\u76d6，\u8bf7\u4ee5\u5bf9\u5e94\u7248\u672c\u6587\u6863\u4e3a\u51c6\u3002 \u7248\u672c\u53f7\u8de8\u5ea6\u5e26\u6765\u7684\u5dee\u5f02，\u8bf7\u6309 javap \/ \u5b98\u65b9\u6587\u6863\u5728\u4f60\u81ea\u5df1\u7684\u4f9d\u8d56\u4e0a\u590d\u6838\u4e00\u904d，\u6211\u5728 5.3 \u4e0e 6.2 \u4e4b\u95f4\u5df2\u53d1\u73b0\u4e00\u5904\u63a5\u53e3\u5220\u9664（\u89c1\u4e0a）\u3002<\/li>\n
          • \u7b2c 3 \u8282 MyBeanPostProcessor \u7684\u793a\u4f8b\u57fa\u4e8e\u539f\u7a3f\u4ee3\u7801，\u7c7b\u540d\u7b14\u8bef（Proccessor）\u5df2\u4fee\u6b63；\u793a\u4f8b\u4e2d\u7684 Address\u3001JobMeta\u3001RpcReferenceBean\u3001SignatureInterceptor \u5747\u4e3a\u6f14\u793a\u7528\u865a\u6784\u7c7b，\u975e\u53ef\u8fd0\u884c\u5de5\u7a0b\u4ee3\u7801\u3002<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

            💡 Spring \u7ed9\u6211\u4eec\u7559\u4e86\u5f88\u591a\u6269\u5c55\u70b9\u3002\u7528\u597d\u5b83\u4eec，\u5f88\u591a\u4e1a\u52a1\u903b\u8f91\u6839\u672c\u4e0d\u9700\u8981\u6539\u4e3b\u5e72\u4ee3\u7801；\u5e02\u9762\u4e0a\u5927\u91cf\u7b2c\u4e09\u65b9\u6846\u67b6（MyBatis \u96c6\u6210\u3001\u5404\u79cd starter\u3001AOP\u3001\u914d\u7f6e\u4e2d\u5fc3\u5ba2\u6237\u7aef），\u5305\u62ec Spring \u81ea\u5df1，\u672c\u8d28\u4e0a\u90fd\u662f\u5728\u8fd9\u6279\u6269\u5c55\u70b9\u4e0a\u505a\u6587\u7ae0\u3002\u5bf9\u4fee\u6539\u5173\u95ed\u3001\u5bf9\u6269\u5c55\u5f00\u653e，Spring \u662f\u628a\u5b83\u843d\u8fdb\u4e86\u63a5\u53e3\u91cc\u3002
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