{"id":107297,"date":"2026-09-19T10:08:40","date_gmt":"2026-09-19T02:08:40","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/107297.html"},"modified":"2026-09-19T10:08:40","modified_gmt":"2026-09-19T02:08:40","slug":"spring-bean-%e7%9a%84%e7%94%9f%e5%91%bd%e5%91%a8%e6%9c%9f%e8%af%a6%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/107297.html","title":{"rendered":"Spring Bean \u7684\u751f\u547d\u5468\u671f\u8be6\u89e3"},"content":{"rendered":"

Spring Bean \u7684\u751f\u547d\u5468\u671f\u8be6\u89e3<\/h2>\n

\u4e00\u3001\u4ec0\u4e48\u662f Bean \u7684\u751f\u547d\u5468\u671f？<\/h3>\n

Bean \u7684\u751f\u547d\u5468\u671f\u662f\u6307\u4ece Spring \u5bb9\u5668\u521b\u5efa Bean \u5b9e\u4f8b\u5f00\u59cb，\u5230\u6700\u7ec8\u9500\u6bc1 Bean \u7684\u6574\u4e2a\u8fc7\u7a0b\u3002\u7406\u89e3\u8fd9\u4e2a\u8fc7\u7a0b，\u80fd\u5e2e\u4f60\u641e\u6e05\u695a\u5f88\u591a\u95ee\u9898：\u4e3a\u4ec0\u4e48 @PostConstruct \u80fd\u5728\u4f9d\u8d56\u6ce8\u5165\u5b8c\u6210\u540e\u6267\u884c\u3001AOP \u4ee3\u7406\u662f\u5728\u54ea\u4e2a\u9636\u6bb5\u751f\u6210\u7684\u3001@PreDestroy \u4e3a\u4ec0\u4e48\u6709\u65f6\u5019\u4e0d\u751f\u6548\u3002<\/p>\n

\u4e8c\u3001\u5b8c\u6574\u751f\u547d\u5468\u671f\u6d41\u7a0b<\/h3>\n

Spring Bean \u7684\u751f\u547d\u5468\u671f\u53ef\u4ee5\u6982\u62ec\u4e3a\u56db\u4e2a\u5927\u9636\u6bb5：\u5b9e\u4f8b\u5316 \u2192 \u5c5e\u6027\u586b\u5145 \u2192 \u521d\u59cb\u5316 \u2192 \u9500\u6bc1\u3002\u4f46\u5728\u8fd9\u56db\u4e2a\u9636\u6bb5\u4e4b\u95f4，\u7a7f\u63d2\u7740\u591a\u4e2a\u6269\u5c55\u70b9\u3002<\/p>\n

\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510
\n\u2502 Bean \u751f\u547d\u5468\u671f\u5b8c\u6574\u6d41\u7a0b \u2502
\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524
\n\u2502 \u2502
\n\u2502 \u2460 \u5b9e\u4f8b\u5316（Instantiation） \u2502
\n\u2502 \u2514\u2500\u2500 \u901a\u8fc7\u53cd\u5c04\u8c03\u7528\u6784\u9020\u65b9\u6cd5\u521b\u5efa\u5bf9\u8c61 \u2502
\n\u2502 \u2502
\n\u2502 \u2461 \u5c5e\u6027\u586b\u5145（Populate） \u2502
\n\u2502 \u2514\u2500\u2500 \u4f9d\u8d56\u6ce8\u5165（@Autowired\u3001@Value） \u2502
\n\u2502 \u2502
\n\u2502 \u2462 Aware \u63a5\u53e3\u56de\u8c03 \u2502
\n\u2502 \u251c\u2500\u2500 BeanNameAware.setBeanName() \u2502
\n\u2502 \u251c\u2500\u2500 BeanFactoryAware.setBeanFactory() \u2502
\n\u2502 \u251c\u2500\u2500 ApplicationContextAware.setApplicationContext() \u2502
\n\u2502 \u2514\u2500\u2500 \u5176\u4ed6 Aware \u63a5\u53e3 \u2502
\n\u2502 \u2502
\n\u2502 \u2463 BeanPostProcessor.postProcessBeforeInitialization() \u2502
\n\u2502 \u2514\u2500\u2500 \u521d\u59cb\u5316\u524d\u589e\u5f3a \u2502
\n\u2502 \u2502
\n\u2502 \u2464 \u521d\u59cb\u5316（Initialization） \u2502
\n\u2502 \u251c\u2500\u2500 @PostConstruct \u6807\u6ce8\u7684\u65b9\u6cd5 \u2502
\n\u2502 \u251c\u2500\u2500 InitializingBean.afterPropertiesSet() \u2502
\n\u2502 \u2514\u2500\u2500 init-method \u6216 @Bean(initMethod = "…") \u2502
\n\u2502 \u2502
\n\u2502 \u2465 BeanPostProcessor.postProcessAfterInitialization() \u2502
\n\u2502 \u2514\u2500\u2500 \u521d\u59cb\u5316\u540e\u589e\u5f3a（AOP \u4ee3\u7406\u5728\u6b64\u751f\u6210） \u2502
\n\u2502 \u2502
\n\u2502 \u2466 Bean \u5c31\u7eea，\u53ef\u4ee5\u4f7f\u7528 \u2502
\n\u2502 \u2502
\n\u2502 \u2467 \u5bb9\u5668\u5173\u95ed，\u9500\u6bc1 Bean \u2502
\n\u2502 \u251c\u2500\u2500 @PreDestroy \u6807\u6ce8\u7684\u65b9\u6cd5 \u2502
\n\u2502 \u251c\u2500\u2500 DisposableBean.destroy() \u2502
\n\u2502 \u2514\u2500\u2500 destroy-method \u6216 @Bean(destroyMethod = "…") \u2502
\n\u2502 \u2502
\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/p>\n

\u4e09\u3001\u5404\u9636\u6bb5\u8be6\u89e3<\/h3>\n

3.1 \u5b9e\u4f8b\u5316（Instantiation）<\/h4>\n

Spring \u901a\u8fc7\u53cd\u5c04\u8c03\u7528\u6784\u9020\u65b9\u6cd5\u521b\u5efa Bean \u5b9e\u4f8b\u3002\u5982\u679c\u4f7f\u7528\u6784\u9020\u5668\u6ce8\u5165，\u4f9d\u8d56\u5728\u6b64\u65f6\u4f5c\u4e3a\u53c2\u6570\u4f20\u5165\u3002\u5982\u679c\u4f7f\u7528\u5b57\u6bb5\u6ce8\u5165，\u6b64\u65f6\u5bf9\u8c61\u5df2\u521b\u5efa，\u4f46\u4f9d\u8d56\u5b57\u6bb5\u8fd8\u662f null\u3002<\/p>\n

@Service<\/span>
\npublic<\/span> class<\/span> UserService<\/span> {<\/span>
\n @Autowired<\/span>
\n private<\/span> UserDao<\/span> userDao;<\/span> \/\/ \u6b64\u65f6\u8fd8\u662f null<\/span><\/p>\n

public<\/span> UserService<\/span>(<\/span>)<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"1. \u6784\u9020\u65b9\u6cd5\u6267\u884c，userDao = "<\/span> +<\/span> userDao)<\/span>;<\/span> \/\/ null<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

3.2 \u5c5e\u6027\u586b\u5145（Populate）<\/h4>\n

Spring \u626b\u63cf Bean \u4e2d\u6807\u6ce8\u4e86 @Autowired\u3001@Value\u3001@Resource \u7684\u5b57\u6bb5\u548c\u65b9\u6cd5，\u4ece\u5bb9\u5668\u4e2d\u67e5\u627e\u5339\u914d\u7684\u4f9d\u8d56\u5e76\u6ce8\u5165\u3002<\/p>\n

@Autowired<\/span>
\nprivate<\/span> UserDao<\/span> userDao;<\/span> \/\/ \u6b64\u65f6\u88ab\u6ce8\u5165<\/span><\/p>\n

@Value<\/span>(<\/span>"${app.name}"<\/span>)<\/span>
\nprivate<\/span> String<\/span> appName;<\/span> \/\/ \u6b64\u65f6\u88ab\u6ce8\u5165<\/span><\/p>\n

\u5982\u679c\u4f9d\u8d56\u662f\u5faa\u73af\u4f9d\u8d56，Spring \u901a\u8fc7\u4e09\u7ea7\u7f13\u5b58\u63d0\u524d\u66b4\u9732\u5bf9\u8c61\u7684\u65e9\u671f\u5f15\u7528，\u8ba9\u4f9d\u8d56\u65b9\u5148\u62ff\u5230\u5f15\u7528\u3002<\/p>\n

3.3 Aware \u63a5\u53e3\u56de\u8c03<\/h4>\n

\u5982\u679c Bean \u5b9e\u73b0\u4e86 Aware \u7cfb\u5217\u63a5\u53e3，Spring \u4f1a\u8c03\u7528\u5bf9\u5e94\u7684\u65b9\u6cd5，\u8ba9 Bean \u83b7\u53d6\u5bb9\u5668\u5185\u90e8\u7684\u4e00\u4e9b\u8d44\u6e90\u3002<\/p>\n\nAware \u63a5\u53e3\u56de\u8c03\u65b9\u6cd5\u83b7\u53d6\u7684\u8d44\u6e90<\/tr>\n\n\n\n\n\n\n\n
BeanNameAware<\/td>\nsetBeanName(String)<\/td>\nBean \u7684\u540d\u79f0<\/td>\n<\/tr>\n
BeanFactoryAware<\/td>\nsetBeanFactory(BeanFactory)<\/td>\nBeanFactory \u5b9e\u4f8b<\/td>\n<\/tr>\n
ApplicationContextAware<\/td>\nsetApplicationContext(ApplicationContext)<\/td>\nApplicationContext \u5b9e\u4f8b<\/td>\n<\/tr>\n
EnvironmentAware<\/td>\nsetEnvironment(Environment)<\/td>\nEnvironment \u5b9e\u4f8b<\/td>\n<\/tr>\n
ResourceLoaderAware<\/td>\nsetResourceLoader(ResourceLoader)<\/td>\n\u8d44\u6e90\u52a0\u8f7d\u5668<\/td>\n<\/tr>\n
ApplicationEventPublisherAware<\/td>\nsetApplicationEventPublisher(…)<\/td>\n\u4e8b\u4ef6\u53d1\u5e03\u5668<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

@Component<\/span>
\npublic<\/span> class<\/span> MyBean<\/span> implements<\/span> BeanNameAware<\/span>,<\/span> ApplicationContextAware<\/span> {<\/span><\/p>\n

@Override<\/span>
\n public<\/span> void<\/span> setBeanName<\/span>(<\/span>String<\/span> name)<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"3. Bean \u540d\u79f0: "<\/span> +<\/span> name)<\/span>;<\/span>
\n }<\/span><\/p>\n

@Override<\/span>
\n public<\/span> void<\/span> setApplicationContext<\/span>(<\/span>ApplicationContext<\/span> context)<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"3. \u83b7\u53d6\u5230 ApplicationContext"<\/span>)<\/span>;<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

3.4 BeanPostProcessor \u524d\u7f6e\u5904\u7406<\/h4>\n

BeanPostProcessor \u662f Spring \u6700\u91cd\u8981\u7684\u6269\u5c55\u70b9\u4e4b\u4e00\u3002\u5b83\u7684 postProcessBeforeInitialization \u65b9\u6cd5\u4f1a\u5728\u6240\u6709\u521d\u59cb\u5316\u65b9\u6cd5\u6267\u884c\u4e4b\u524d\u88ab\u8c03\u7528\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> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"4. \u521d\u59cb\u5316\u524d: "<\/span> +<\/span> beanName)<\/span>;<\/span>
\n return<\/span> bean;<\/span> \/\/ \u8fd4\u56de null \u5219\u4e0d\u4f1a\u7ee7\u7eed\u540e\u7eed\u5904\u7406<\/span>
\n }<\/span><\/p>\n

@Override<\/span>
\n public<\/span> Object<\/span> postProcessAfterInitialization<\/span>(<\/span>Object<\/span> bean,<\/span> String<\/span> beanName)<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"6. \u521d\u59cb\u5316\u540e: "<\/span> +<\/span> beanName)<\/span>;<\/span>
\n return<\/span> bean;<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

\u5982\u679c\u8fd4\u56de null，Spring \u4e0d\u4f1a\u7ee7\u7eed\u6267\u884c\u540e\u7eed\u7684\u521d\u59cb\u5316\u6d41\u7a0b，Bean \u4e5f\u4e0d\u4f1a\u88ab\u6ce8\u518c\u5230\u5bb9\u5668\u4e2d\u3002<\/p>\n

3.5 \u521d\u59cb\u5316（Initialization）<\/h4>\n

\u521d\u59cb\u5316\u9636\u6bb5\u6309\u4ee5\u4e0b\u987a\u5e8f\u6267\u884c：<\/p>\n

1. @PostConstruct \u6807\u6ce8\u7684\u65b9\u6cd5<\/p>\n

@PostConstruct<\/span>
\npublic<\/span> void<\/span> init<\/span>(<\/span>)<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"5.1 @PostConstruct \u6267\u884c"<\/span>)<\/span>;<\/span>
\n}<\/span><\/p>\n

2. InitializingBean.afterPropertiesSet()<\/p>\n

@Component<\/span>
\npublic<\/span> class<\/span> MyBean<\/span> implements<\/span> InitializingBean<\/span> {<\/span>
\n @Override<\/span>
\n public<\/span> void<\/span> afterPropertiesSet<\/span>(<\/span>)<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"5.2 afterPropertiesSet \u6267\u884c"<\/span>)<\/span>;<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

3. init-method \u6216 @Bean(initMethod = "…")<\/p>\n

@Bean<\/span>(<\/span>initMethod =<\/span> "customInit"<\/span>)<\/span>
\npublic<\/span> MyBean<\/span> myBean<\/span>(<\/span>)<\/span> {<\/span>
\n return<\/span> new<\/span> MyBean<\/span>(<\/span>)<\/span>;<\/span>
\n}<\/span><\/p>\n

\/\/ MyBean \u4e2d\u5b9a\u4e49 customInit \u65b9\u6cd5<\/span>
\npublic<\/span> void<\/span> customInit<\/span>(<\/span>)<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"5.3 init-method \u6267\u884c"<\/span>)<\/span>;<\/span>
\n}<\/span><\/p>\n

\u6267\u884c\u987a\u5e8f：@PostConstruct \u2192 afterPropertiesSet() \u2192 init-method<\/p>\n

3.6 BeanPostProcessor \u540e\u7f6e\u5904\u7406<\/h4>\n

postProcessAfterInitialization \u5728\u6240\u6709\u521d\u59cb\u5316\u65b9\u6cd5\u6267\u884c\u4e4b\u540e\u88ab\u8c03\u7528\u3002AOP \u4ee3\u7406\u5c31\u662f\u5728\u8fd9\u4e2a\u9636\u6bb5\u751f\u6210\u7684\u3002<\/p>\n

@Override<\/span>
\npublic<\/span> Object<\/span> postProcessAfterInitialization<\/span>(<\/span>Object<\/span> bean,<\/span> String<\/span> beanName)<\/span> {<\/span>
\n \/\/ \u5982\u679c Bean \u9700\u8981\u88ab AOP \u4ee3\u7406，\u8fd9\u91cc\u8fd4\u56de\u4ee3\u7406\u5bf9\u8c61<\/span>
\n \/\/ Spring \u7684 AbstractAutoProxyCreator \u5c31\u662f\u5728\u8fd9\u91cc\u521b\u5efa\u4ee3\u7406\u7684<\/span>
\n return<\/span> bean;<\/span>
\n}<\/span><\/p>\n

\u5982\u679c Bean \u88ab AOP \u4ee3\u7406，\u5bb9\u5668\u4e2d\u6700\u7ec8\u5b58\u653e\u7684\u662f\u4ee3\u7406\u5bf9\u8c61，\u800c\u4e0d\u662f\u539f\u59cb\u5bf9\u8c61\u3002\u8fd9\u4e5f\u89e3\u91ca\u4e86\u4e3a\u4ec0\u4e48 @Transactional \u6ce8\u89e3\u7684\u65b9\u6cd5\u5fc5\u987b\u901a\u8fc7\u4ee3\u7406\u8c03\u7528\u624d\u751f\u6548\u3002<\/p>\n

3.7 Bean \u5c31\u7eea<\/h4>\n

\u7ecf\u8fc7\u4ee5\u4e0a\u6240\u6709\u9636\u6bb5\u540e，Bean \u88ab\u653e\u5165\u5355\u4f8b\u6c60（singletonObjects），\u53ef\u4ee5\u88ab\u5e94\u7528\u7a0b\u5e8f\u4f7f\u7528\u3002<\/p>\n

3.8 \u9500\u6bc1（Destruction）<\/h4>\n

\u5bb9\u5668\u5173\u95ed\u65f6，Bean \u7684\u9500\u6bc1\u6d41\u7a0b\u6309\u4ee5\u4e0b\u987a\u5e8f\u6267\u884c：<\/p>\n

1. @PreDestroy \u6807\u6ce8\u7684\u65b9\u6cd5<\/p>\n

@PreDestroy<\/span>
\npublic<\/span> void<\/span> preDestroy<\/span>(<\/span>)<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"8.1 @PreDestroy \u6267\u884c"<\/span>)<\/span>;<\/span>
\n}<\/span><\/p>\n

2. DisposableBean.destroy()<\/p>\n

@Component<\/span>
\npublic<\/span> class<\/span> MyBean<\/span> implements<\/span> DisposableBean<\/span> {<\/span>
\n @Override<\/span>
\n public<\/span> void<\/span> destroy<\/span>(<\/span>)<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"8.2 destroy \u6267\u884c"<\/span>)<\/span>;<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

3. destroy-method \u6216 @Bean(destroyMethod = "…")<\/p>\n

@Bean<\/span>(<\/span>destroyMethod =<\/span> "customDestroy"<\/span>)<\/span>
\npublic<\/span> MyBean<\/span> myBean<\/span>(<\/span>)<\/span> {<\/span>
\n return<\/span> new<\/span> MyBean<\/span>(<\/span>)<\/span>;<\/span>
\n}<\/span><\/p>\n

\u6267\u884c\u987a\u5e8f：@PreDestroy \u2192 destroy() \u2192 destroy-method<\/p>\n

\u56db\u3001\u5b8c\u6574\u793a\u4f8b<\/h3>\n

@Component<\/span>
\npublic<\/span> class<\/span> LifecycleBean<\/span> implements<\/span> BeanNameAware<\/span>,<\/span> InitializingBean<\/span>,<\/span> DisposableBean<\/span> {<\/span><\/p>\n

@Autowired<\/span>
\n private<\/span> UserDao<\/span> userDao;<\/span><\/p>\n

public<\/span> LifecycleBean<\/span>(<\/span>)<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"1. \u6784\u9020\u65b9\u6cd5\u6267\u884c"<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

@Override<\/span>
\n public<\/span> void<\/span> setBeanName<\/span>(<\/span>String<\/span> name)<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"3. BeanNameAware.setBeanName: "<\/span> +<\/span> name)<\/span>;<\/span>
\n }<\/span><\/p>\n

@PostConstruct<\/span>
\n public<\/span> void<\/span> postConstruct<\/span>(<\/span>)<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"5.1 @PostConstruct \u6267\u884c"<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

@Override<\/span>
\n public<\/span> void<\/span> afterPropertiesSet<\/span>(<\/span>)<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"5.2 afterPropertiesSet \u6267\u884c"<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

public<\/span> void<\/span> customInit<\/span>(<\/span>)<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"5.3 init-method \u6267\u884c"<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

@PreDestroy<\/span>
\n public<\/span> void<\/span> preDestroy<\/span>(<\/span>)<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"8.1 @PreDestroy \u6267\u884c"<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

@Override<\/span>
\n public<\/span> void<\/span> destroy<\/span>(<\/span>)<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"8.2 destroy \u6267\u884c"<\/span>)<\/span>;<\/span>
\n }<\/span><\/p>\n

public<\/span> void<\/span> customDestroy<\/span>(<\/span>)<\/span> {<\/span>
\n System<\/span>.<\/span>out.<\/span>println<\/span>(<\/span>"8.3 destroy-method \u6267\u884c"<\/span>)<\/span>;<\/span>
\n }<\/span>
\n}<\/span><\/p>\n

\u914d\u7f6e：<\/p>\n

@Bean<\/span>(<\/span>initMethod =<\/span> "customInit"<\/span>,<\/span> destroyMethod =<\/span> "customDestroy"<\/span>)<\/span>
\npublic<\/span> LifecycleBean<\/span> lifecycleBean<\/span>(<\/span>)<\/span> {<\/span>
\n return<\/span> new<\/span> LifecycleBean<\/span>(<\/span>)<\/span>;<\/span>
\n}<\/span><\/p>\n

\u8f93\u51fa：<\/p>\n

1. \u6784\u9020\u65b9\u6cd5\u6267\u884c
\n2. \u5c5e\u6027\u586b\u5145（\u4f9d\u8d56\u6ce8\u5165）
\n3. BeanNameAware.setBeanName: lifecycleBean
\n4. BeanPostProcessor.postProcessBeforeInitialization
\n5.1 @PostConstruct \u6267\u884c
\n5.2 afterPropertiesSet \u6267\u884c
\n5.3 init-method \u6267\u884c
\n6. BeanPostProcessor.postProcessAfterInitialization
\n7. Bean \u5c31\u7eea
\n… \u5e94\u7528\u8fd0\u884c …
\n8.1 @PreDestroy \u6267\u884c
\n8.2 destroy \u6267\u884c
\n8.3 destroy-method \u6267\u884c<\/p>\n

\u4e94\u3001\u4f5c\u7528\u57df\u5bf9\u751f\u547d\u5468\u671f\u7684\u5f71\u54cd<\/h3>\n\n\u4f5c\u7528\u57df\u751f\u547d\u5468\u671f<\/tr>\n\n\n\n\n\n\n
singleton<\/td>\n\u5bb9\u5668\u542f\u52a8\u65f6\u521b\u5efa，\u5bb9\u5668\u5173\u95ed\u65f6\u9500\u6bc1<\/td>\n<\/tr>\n
prototype<\/td>\n\u6bcf\u6b21\u83b7\u53d6\u65f6\u521b\u5efa，Spring \u4e0d\u7ba1\u7406\u9500\u6bc1（\u9700\u8981\u8c03\u7528\u65b9\u81ea\u884c\u5904\u7406）<\/td>\n<\/tr>\n
request<\/td>\n\u6bcf\u6b21 HTTP \u8bf7\u6c42\u521b\u5efa，\u8bf7\u6c42\u7ed3\u675f\u65f6\u9500\u6bc1<\/td>\n<\/tr>\n
session<\/td>\n\u6bcf\u4e2a\u4f1a\u8bdd\u521b\u5efa，\u4f1a\u8bdd\u5931\u6548\u65f6\u9500\u6bc1<\/td>\n<\/tr>\n
application<\/td>\n\u6574\u4e2a ServletContext \u751f\u547d\u5468\u671f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

prototype \u4f5c\u7528\u57df\u7684 Bean，Spring \u53ea\u8d1f\u8d23\u521b\u5efa，\u4e0d\u8d1f\u8d23\u9500\u6bc1\u3002@PreDestroy \u548c DisposableBean \u4e0d\u4f1a\u751f\u6548\u3002<\/p>\n

\u516d\u3001\u751f\u547d\u5468\u671f\u4e2d\u7684\u6269\u5c55\u70b9<\/h3>\n\n\u6269\u5c55\u70b9\u7c7b\u578b\u4f5c\u7528<\/tr>\n\n\n\n\n\n\n\n\n\n
BeanPostProcessor<\/td>\n\u63a5\u53e3<\/td>\n\u5728\u521d\u59cb\u5316\u524d\u540e\u589e\u5f3a Bean<\/td>\n<\/tr>\n
InstantiationAwareBeanPostProcessor<\/td>\n\u63a5\u53e3<\/td>\n\u5728\u5b9e\u4f8b\u5316\u524d\u540e\u589e\u5f3a Bean<\/td>\n<\/tr>\n
@PostConstruct<\/td>\n\u6ce8\u89e3<\/td>\n\u521d\u59cb\u5316\u65b9\u6cd5<\/td>\n<\/tr>\n
InitializingBean<\/td>\n\u63a5\u53e3<\/td>\n\u521d\u59cb\u5316\u65b9\u6cd5<\/td>\n<\/tr>\n
init-method<\/td>\nXML\/\u6ce8\u89e3<\/td>\n\u521d\u59cb\u5316\u65b9\u6cd5<\/td>\n<\/tr>\n
@PreDestroy<\/td>\n\u6ce8\u89e3<\/td>\n\u9500\u6bc1\u65b9\u6cd5<\/td>\n<\/tr>\n
DisposableBean<\/td>\n\u63a5\u53e3<\/td>\n\u9500\u6bc1\u65b9\u6cd5<\/td>\n<\/tr>\n
destroy-method<\/td>\nXML\/\u6ce8\u89e3<\/td>\n\u9500\u6bc1\u65b9\u6cd5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4e03\u3001\u5e38\u89c1\u95ee\u9898<\/h3>\n

1. @PostConstruct \u5728\u4f9d\u8d56\u6ce8\u5165\u5b8c\u6210\u540e\u624d\u6267\u884c<\/p>\n

\u8fd9\u4e2a\u987a\u5e8f\u4fdd\u8bc1\u4e86 @PostConstruct \u65b9\u6cd5\u4e2d\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u6ce8\u5165\u7684\u4f9d\u8d56，\u4e0d\u4f1a\u51fa\u73b0\u7a7a\u6307\u9488\u3002<\/p>\n

@PostConstruct<\/span>
\npublic<\/span> void<\/span> init<\/span>(<\/span>)<\/span> {<\/span>
\n userDao.<\/span>count<\/span>(<\/span>)<\/span>;<\/span> \/\/ \u5b89\u5168，userDao \u5df2\u7ecf\u88ab\u6ce8\u5165<\/span>
\n}<\/span><\/p>\n

2. AOP \u4ee3\u7406\u5728\u54ea\u4e2a\u9636\u6bb5\u751f\u6210？<\/p>\n

AOP \u4ee3\u7406\u5728 BeanPostProcessor.postProcessAfterInitialization() \u4e2d\u751f\u6210\u3002\u6240\u4ee5\u5982\u679c Bean \u88ab AOP \u4ee3\u7406，\u5bb9\u5668\u4e2d\u5b58\u653e\u7684\u662f\u4ee3\u7406\u5bf9\u8c61\u3002\u8fd9\u4e5f\u89e3\u91ca\u4e86\u4e3a\u4ec0\u4e48\u540c\u4e00\u4e2a\u7c7b\u5185\u90e8\u65b9\u6cd5\u8c03\u7528\u4e0d\u4f1a\u89e6\u53d1 AOP\u2014\u2014\u56e0\u4e3a\u5185\u90e8\u8c03\u7528\u8d70\u7684\u662f\u539f\u59cb\u5bf9\u8c61，\u4e0d\u662f\u4ee3\u7406\u5bf9\u8c61\u3002<\/p>\n

3. \u6784\u9020\u65b9\u6cd5\u4e2d\u4e3a\u4ec0\u4e48\u4e0d\u80fd\u4f7f\u7528\u6ce8\u5165\u7684\u4f9d\u8d56？<\/p>\n

\u6784\u9020\u65b9\u6cd5\u6267\u884c\u65f6，\u5c5e\u6027\u586b\u5145\u8fd8\u6ca1\u5f00\u59cb\u3002\u6240\u4ee5\u6784\u9020\u65b9\u6cd5\u4e2d userDao \u8fd8\u662f null\u3002\u5982\u679c\u9700\u8981\u5728\u6784\u9020\u65b9\u6cd5\u4e2d\u4f7f\u7528\u4f9d\u8d56，\u5e94\u4f7f\u7528\u6784\u9020\u5668\u6ce8\u5165\u3002<\/p>\n

4. prototype Bean \u7684\u9500\u6bc1\u65b9\u6cd5\u4e3a\u4ec0\u4e48\u4e0d\u6267\u884c？<\/p>\n

Spring \u53ea\u8d1f\u8d23\u521b\u5efa prototype Bean，\u521b\u5efa\u5b8c\u6210\u540e\u5c31\u4e0d\u518d\u7ba1\u7406\u5b83\u7684\u751f\u547d\u5468\u671f\u3002\u9500\u6bc1\u65b9\u6cd5\u9700\u8981\u8c03\u7528\u65b9\u624b\u52a8\u8c03\u7528，\u6216\u8005\u901a\u8fc7 DisposableBeanAdapter \u81ea\u884c\u5904\u7406\u3002<\/p>\n

5. BeanPostProcessor \u4e3a\u4ec0\u4e48\u80fd\u62e6\u622a\u6240\u6709 Bean？<\/p>\n

BeanPostProcessor \u672c\u8eab\u4e5f\u662f\u4e00\u4e2a Bean，\u4f46\u5b83\u7684\u6ce8\u518c\u65f6\u673a\u975e\u5e38\u65e9（\u5728 refresh() \u7684 registerBeanPostProcessors() \u9636\u6bb5）\u3002Spring \u5728\u521b\u5efa\u4efb\u4f55 Bean \u65f6，\u90fd\u4f1a\u5148\u83b7\u53d6\u6240\u6709\u5df2\u6ce8\u518c\u7684 BeanPostProcessor，\u4f9d\u6b21\u8c03\u7528\u5b83\u4eec\u7684\u540e\u7f6e\u5904\u7406\u65b9\u6cd5\u3002<\/p>\n

\u516b\u3001\u603b\u7ed3<\/h3>\n

Bean \u7684\u751f\u547d\u5468\u671f\u53ef\u4ee5\u6982\u62ec\u4e3a\u56db\u4e2a\u6838\u5fc3\u9636\u6bb5：\u5b9e\u4f8b\u5316 \u2192 \u5c5e\u6027\u586b\u5145 \u2192 \u521d\u59cb\u5316 \u2192 \u9500\u6bc1\u3002\u5728\u8fd9\u56db\u4e2a\u9636\u6bb5\u4e4b\u95f4，Spring \u63d0\u4f9b\u4e86\u591a\u4e2a\u6269\u5c55\u70b9，\u8ba9\u5f00\u53d1\u8005\u53ef\u4ee5\u5728\u5408\u9002\u7684\u65f6\u673a\u63d2\u5165\u81ea\u5b9a\u4e49\u903b\u8f91\u3002<\/p>\n\n\u9636\u6bb5\u6838\u5fc3\u64cd\u4f5c\u5e38\u7528\u6269\u5c55\u70b9<\/tr>\n\n\n\n\n\n\n\n\n\n
\u5b9e\u4f8b\u5316<\/td>\n\u53cd\u5c04\u8c03\u7528\u6784\u9020\u65b9\u6cd5<\/td>\nInstantiationAwareBeanPostProcessor<\/td>\n<\/tr>\n
\u5c5e\u6027\u586b\u5145<\/td>\n\u4f9d\u8d56\u6ce8\u5165<\/td>\n@Autowired\u3001@Value<\/td>\n<\/tr>\n
Aware \u56de\u8c03<\/td>\n\u83b7\u53d6\u5bb9\u5668\u8d44\u6e90<\/td>\nBeanNameAware\u3001ApplicationContextAware<\/td>\n<\/tr>\n
\u521d\u59cb\u5316\u524d<\/td>\nBeanPostProcessor \u524d\u7f6e<\/td>\npostProcessBeforeInitialization<\/td>\n<\/tr>\n
\u521d\u59cb\u5316<\/td>\n\u6267\u884c\u521d\u59cb\u5316\u903b\u8f91<\/td>\n@PostConstruct\u3001InitializingBean\u3001init-method<\/td>\n<\/tr>\n
\u521d\u59cb\u5316\u540e<\/td>\nBeanPostProcessor \u540e\u7f6e<\/td>\npostProcessAfterInitialization（AOP \u4ee3\u7406\u5728\u6b64\u751f\u6210）<\/td>\n<\/tr>\n
\u4f7f\u7528<\/td>\nBean \u5c31\u7eea<\/td>\n\u2014<\/td>\n<\/tr>\n
\u9500\u6bc1<\/td>\n\u91ca\u653e\u8d44\u6e90<\/td>\n@PreDestroy\u3001DisposableBean\u3001destroy-method<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u7406\u89e3 Bean \u751f\u547d\u5468\u671f，\u80fd\u5e2e\u4f60\u89e3\u91ca\u5f88\u591a Spring \u4e2d\u7684\u201c\u5947\u602a\u73b0\u8c61\u201d：\u4e3a\u4ec0\u4e48 @PostConstruct \u80fd\u62ff\u5230\u6ce8\u5165\u7684\u4f9d\u8d56\u3001\u4e3a\u4ec0\u4e48 AOP \u4ee3\u7406\u7684\u65b9\u6cd5\u8c03\u7528\u6709\u201c\u81ea\u8c03\u7528\u5931\u6548\u201d\u95ee\u9898\u3001\u4e3a\u4ec0\u4e48 prototype Bean \u7684\u9500\u6bc1\u65b9\u6cd5\u4e0d\u751f\u6548\u3002\u638c\u63e1\u751f\u547d\u5468\u671f，\u5c31\u638c\u63e1\u4e86 Spring \u5bb9\u5668\u7ba1\u7406\u7684\u5e95\u5c42\u903b\u8f91\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

Spring Bean \u7684\u751f\u547d\u5468\u671f\u8be6\u89e3
\n\u4e00\u3001\u4ec0\u4e48\u662f Bean \u7684\u751f\u547d\u5468\u671f？
\nBean \u7684\u751f\u547d\u5468\u671f\u662f\u6307\u4ece Spring \u5bb9\u5668\u521b\u5efa Bean \u5b9e\u4f8b\u5f00\u59cb，\u5230\u6700\u7ec8\u9500\u6bc1 Bean \u7684\u6574\u4e2a\u8fc7\u7a0b\u3002\u7406\u89e3\u8fd9\u4e2a\u8fc7\u7a0b，\u80fd\u5e2e\u4f60\u641e\u6e05\u695a\u5f88\u591a\u95ee\u9898：\u4e3a\u4ec0\u4e48 PostConstruct \u80fd\u5728\u4f9d\u8d56\u6ce8\u5165\u5b8c\u6210\u540e\u6267\u884c\u3001AOP \u4ee3\u7406\u662f\u5728\u54ea\u4e2a\u9636\u6bb5\u751f\u6210\u7684\u3001PreDestroy \u4e3a\u4ec0\u4e48\u6709\u65f6\u5019\u4e0d\u751f\u6548\u3002
\n\u4e8c\u3001\u5b8c\u6574\u751f\u547d\u5468\u671f\u6d41\u7a0b
\nSpring Bean \u7684\u751f\u547d\u5468\u671f\u53ef\u4ee5\u6982\u62ec\u4e3a\u56db\u4e2a<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[99,101,292],"topic":[],"class_list":["post-107297","post","type-post","status-publish","format-standard","hentry","category-server","tag-java","tag-spring","tag-292"],"yoast_head":"\nSpring Bean \u7684\u751f\u547d\u5468\u671f\u8be6\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/107297.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Spring Bean \u7684\u751f\u547d\u5468\u671f\u8be6\u89e3 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"Spring Bean \u7684\u751f\u547d\u5468\u671f\u8be6\u89e3 \u4e00\u3001\u4ec0\u4e48\u662f Bean \u7684\u751f\u547d\u5468\u671f？ Bean \u7684\u751f\u547d\u5468\u671f\u662f\u6307\u4ece Spring \u5bb9\u5668\u521b\u5efa Bean \u5b9e\u4f8b\u5f00\u59cb，\u5230\u6700\u7ec8\u9500\u6bc1 Bean \u7684\u6574\u4e2a\u8fc7\u7a0b\u3002\u7406\u89e3\u8fd9\u4e2a\u8fc7\u7a0b，\u80fd\u5e2e\u4f60\u641e\u6e05\u695a\u5f88\u591a\u95ee\u9898：\u4e3a\u4ec0\u4e48 PostConstruct \u80fd\u5728\u4f9d\u8d56\u6ce8\u5165\u5b8c\u6210\u540e\u6267\u884c\u3001AOP \u4ee3\u7406\u662f\u5728\u54ea\u4e2a\u9636\u6bb5\u751f\u6210\u7684\u3001PreDestroy \u4e3a\u4ec0\u4e48\u6709\u65f6\u5019\u4e0d\u751f\u6548\u3002 \u4e8c\u3001\u5b8c\u6574\u751f\u547d\u5468\u671f\u6d41\u7a0b Spring Bean \u7684\u751f\u547d\u5468\u671f\u53ef\u4ee5\u6982\u62ec\u4e3a\u56db\u4e2a\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/107297.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-09-19T02:08:40+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/107297.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/107297.html\",\"name\":\"Spring Bean \u7684\u751f\u547d\u5468\u671f\u8be6\u89e3 - 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