![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260802044900-6a6ecc3c5cced.png\")
<\/p>\n\u6458\u8981：\u672c\u6587\u6df1\u5165\u89e3\u6790 Spring Bean \u751f\u547d\u5468\u671f\u7684 13 \u4e2a\u6838\u5fc3\u6b65\u9aa4，\u4ece\u5b9e\u4f8b\u5316\u3001\u5c5e\u6027\u6ce8\u5165\u5230\u521d\u59cb\u5316\u524d\u540e\u7684 BeanPostProcessor \u94a9\u5b50\u673a\u5236\u3002\u91cd\u70b9\u63ed\u793a\u4e86 AOP \u4ee3\u7406\u5728 postProcessAfterInitialization \u9636\u6bb5\u521b\u5efa\u7684\u5e95\u5c42\u539f\u7406，\u4ee5\u53ca\u4e09\u7ea7\u7f13\u5b58\u89e3\u51b3\u5faa\u73af\u4f9d\u8d56\u7684\u5173\u952e\u8bbe\u8ba1\u3002\u6587\u7ae0\u8fd8\u5bf9\u6bd4\u4e86 BeanPostProcessor \u4e0e BeanFactoryPostProcessor \u7684\u533a\u522b，\u5e76\u4ecb\u7ecd\u4e86 @PostConstruct\u3001SmartInitializingSingleton \u7b49\u6269\u5c55\u94a9\u5b50，\u5e2e\u52a9\u8bfb\u8005\u4ece\u6e90\u7801\u5c42\u9762\u638c\u63e1 Spring \u5bb9\u5668\u7684\u6838\u5fc3\u5de5\u4f5c\u673a\u5236\u3002<\/p>\n
<\/p>\n
"Spring Bean \u7684\u751f\u547d\u5468\u671f\u662f\u4ec0\u4e48？"<\/p>\n
\u8fd9\u9053\u9898\u9762\u8bd5\u9891\u7387\u4e4b\u9ad8，\u51e0\u4e4e\u8ddf"HashMap \u539f\u7406"\u4e00\u4e2a\u7ea7\u522b\u3002\u4f46\u4f60\u4ed4\u7ec6\u56de\u5fc6\u4e00\u4e0b\u2014\u2014\u5927\u90e8\u5206\u4eba\u7684\u56de\u7b54\u662f\u4e0d\u662f\u5c31\u4e09\u53e5\u8bdd：\u5b9e\u4f8b\u5316\u3001\u5c5e\u6027\u6ce8\u5165\u3001\u521d\u59cb\u5316？<\/p>\n
\u8fd9\u6ca1\u9519，\u4f46\u4f60\u6f0f\u6389\u4e86\u4e00\u6574\u5c42\u4e1c\u897f\u3002<\/p>\n
\u9762\u8bd5\u5b98\u771f\u6b63\u60f3\u542c\u7684，\u662f\u4f60\u77e5\u4e0d\u77e5\u9053BeanPostProcessor\u8fd9\u4e2a\u673a\u5236\u2014\u2014\u5b83\u624d\u662f\u8d2f\u7a7f Spring Bean \u751f\u547d\u5468\u671f\u7684\u7075\u9b42\u3002\u6ca1\u6709\u5b83，AOP \u5207\u4e0d\u8fdb\u53bb\u3001\u4e8b\u52a1\u7ba1\u7406\u8dd1\u4e0d\u8d77\u6765\u3001@Autowired \u6839\u672c\u4e0d\u4f1a\u5de5\u4f5c\u3002BeanPostProcessor \u662f\u5728 Bean \u521d\u59cb\u5316\u524d\u540e\u63d2\u5165\u81ea\u5b9a\u4e49\u903b\u8f91\u7684\u94a9\u5b50，\u5b83\u7684 intercept \u80fd\u529b\u662f Spring \u6240\u6709\u6269\u5c55\u529f\u80fd\u7684\u57fa\u7840\u3002<\/p>\n
\u4eca\u5929\u5c31\u4ece\u5934\u5230\u5c3e\u8fc7\u4e00\u904d Spring Bean \u7684\u751f\u547d\u5468\u671f，\u6bcf\u4e00\u9636\u6bb5\u6211\u544a\u8bc9\u4f60\u6e90\u7801\u5728\u54ea\u513f\u3001\u505a\u4e86\u4ec0\u4e48\u3001\u6709\u4ec0\u4e48\u7528\u3002<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260802044900-6a6ecc3cc6987.png\")
<\/p>\n
\u4e00\u4e2a Bean \u4ece\u8bde\u751f\u5230\u9500\u6bc1，\u7406\u8bba\u4e0a\u7ecf\u5386\u4e94\u4e2a\u9636\u6bb5\u3002\u4f46 Spring \u5728\u8fd9\u4e94\u4e2a\u9636\u6bb5\u91cc\u5d4c\u5165\u4e86\u5927\u91cf\u5e72\u9884\u70b9\u3002\u628a\u5e72\u9884\u70b9\u52a0\u4e0a，\u5b9e\u9645\u7684\u6b65\u9aa4\u662f 13 \u6b65：<\/p>\n
1. \u5b9e\u4f8b\u5316（\u53cd\u5c04\u521b\u5efa\u5bf9\u8c61）
\n2. \u5c5e\u6027\u6ce8\u5165（\u8bbe\u7f6e\u5404\u79cd\u5c5e\u6027\u503c）
\n3. BeanNameAware.setBeanName()
\n4. BeanClassLoaderAware.setBeanClassLoader()
\n5. BeanFactoryAware.setBeanFactory()
\n6. BeanPostProcessor.postProcessBeforeInitialization()
\n7. InitializingBean.afterPropertiesSet()
\n8. \u81ea\u5b9a\u4e49 init-method
\n9. BeanPostProcessor.postProcessAfterInitialization() \u2190 🔥 AOP\u5728\u8fd9\u6b65
\n10. Bean \u51c6\u5907\u5c31\u7eea，\u53ef\u4ee5\u7528\u4e86
\n…
\n11. DisposableBean.destroy()
\n12. \u81ea\u5b9a\u4e49 destroy-method
\n13. Bean \u9500\u6bc1<\/p>\n
\u8fd9\u91cc\u9762\u6700\u6838\u5fc3\u7684\u662f\u7b2c 9 \u6b65\u2014\u2014postProcessAfterInitialization()\u3002AOP \u7684\u4ee3\u7406\u5bf9\u8c61\u5c31\u662f\u5728\u8fd9\u6b65\u521b\u5efa\u7684\u3002Spring \u7684 AbstractAutoProxyCreator \u5b9e\u73b0\u4e86 BeanPostProcessor，\u5728 postProcessAfterInitialization \u91cc\u5224\u65ad\u8fd9\u4e2a Bean \u662f\u5426\u9700\u8981\u4ee3\u7406\u2014\u2014\u9700\u8981\u5c31\u521b\u5efa\u4ee3\u7406\u5bf9\u8c61\u66ff\u6362\u539f\u59cb Bean\u3002<\/p>\n
\u5982\u679c\u4f60\u4e0d\u7406\u89e3 Bean \u751f\u547d\u5468\u671f\u91cc\u6709\u8fd9\u4e2a\u94a9\u5b50，\u4f60\u6c38\u8fdc\u60f3\u4e0d\u901a"\u4e3a\u4ec0\u4e48 @Transactional \u5728\u6784\u9020\u5668\u91cc\u8c03\u7528\u65e0\u6548"\u2014\u2014\u56e0\u4e3a\u6784\u9020\u5668\u5728\u6b65\u9aa4 1 \u5c31\u6267\u884c\u5b8c\u4e86，\u4e8b\u52a1\u4ee3\u7406\u5728\u6b65\u9aa4 9 \u624d\u521b\u5efa，\u6784\u9020\u5668\u91cc\u5f53\u7136\u62ff\u4e0d\u5230\u4ee3\u7406\u5bf9\u8c61\u3002<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260802044901-6a6ecc3d2231c.png\")
<\/p>\n
Spring \u5bb9\u5668\u542f\u52a8\u65f6，AbstractApplicationContext.refresh() \u65b9\u6cd5\u88ab\u8c03\u7528，\u8fd9\u4e2a\u65b9\u6cd5\u6709 13 \u4e2a\u5b50\u6b65\u9aa4，Bean \u7684\u751f\u547d\u5468\u671f\u53ea\u662f\u5176\u4e2d\u4e00\u73af\u3002<\/p>\n
\u6838\u5fc3\u5b9e\u73b0\u5728 AbstractAutowireCapableBeanFactory.doCreateBean()，\u6211\u628a\u5173\u952e\u6b65\u9aa4\u62c6\u51fa\u6765：<\/p>\n
\/\/ AbstractAutowireCapableBeanFactory.java \u2014 \u6838\u5fc3\u6d41\u7a0b（\u7b80\u5316）
\nprotected Object doCreateBean(String beanName, RootBeanDefinition mbd, Object[] args) {
\n BeanWrapper instanceWrapper = null;
\n\/\/ \u7b2c\u4e00\u6b65：\u5b9e\u4f8b\u5316
\n\/\/ \u901a\u8fc7\u6784\u9020\u5668\u53cd\u5c04\u521b\u5efa\u5bf9\u8c61\u5b9e\u4f8b
\nif (mbd.isSingleton()) {
\n instanceWrapper = createBeanInstance(beanName, mbd, args);
\n}<\/p>\n
Object bean = instanceWrapper.getWrappedInstance();<\/p>\n
\/\/ \u7b2c\u4e8c\u6b65：\u65e9\u671f\u66b4\u9732（\u89e3\u51b3\u5faa\u73af\u4f9d\u8d56）
\n\/\/ \u628a\u534a\u6210\u54c1\u653e\u5165\u4e09\u7ea7\u7f13\u5b58 singletonFactories
\n\/\/ \u8fd9\u6837\u522b\u7684 Bean \u5728\u5faa\u73af\u4f9d\u8d56\u65f6\u53ef\u4ee5\u62ff\u5230\u8fd9\u4e2a\u534a\u6210\u54c1
\nboolean earlySingletonExposure = mbd.isSingleton() &&
\n this.allowCircularReferences && isSingletonCurrentlyInCreation(beanName);
\nif (earlySingletonExposure) {
\n addSingletonFactory(beanName, () -> getEarlyBeanReference(beanName, mbd, bean));
\n}<\/p>\n
\/\/ \u7b2c\u4e09\u6b65：\u5c5e\u6027\u6ce8\u5165
\n\/\/ @Autowired\u3001@Resource\u3001@Value \u90fd\u5728\u8fd9\u91cc\u5904\u7406
\npopulateBean(beanName, mbd, instanceWrapper);<\/p>\n
\/\/ \u7b2c\u56db\u6b65：\u521d\u59cb\u5316（\u5305\u62ec Aware \u2192 Before \u2192 init \u2192 After）
\nObject exposedObject = initializeBean(beanName, exposedObject, mbd);<\/p>\n
return exposedObject;
\n}<\/p>\n
\u6ce8\u610f addSingletonFactory \u8fd9\u6b65\u2014\u2014\u628a\u672a\u5b8c\u6210\u5c5e\u6027\u6ce8\u5165\u7684\u534a\u6210\u54c1\u5bf9\u8c61\u653e\u5165\u4e09\u7ea7\u7f13\u5b58\u3002\u8fd9\u662f Spring \u89e3\u51b3\u6784\u9020\u5668\u5faa\u73af\u4f9d\u8d56\u7684\u5173\u952e\u3002\u867d\u7136\u5c5e\u6027\u6ce8\u5165\u7684\u5faa\u73af\u4f9d\u8d56\u9760\u4e8c\u7ea7\u7f13\u5b58\u5c31\u591f\u4e86，\u4f46\u4e09\u7ea7\u7f13\u5b58\u7684\u5b58\u5728\u662f\u56e0\u4e3a AOP \u4ee3\u7406\u9700\u8981\u5728\u521d\u59cb\u5316\u540e\u624d\u521b\u5efa\u3002\u5982\u679c\u4e0d\u7528\u4e09\u7ea7\u7f13\u5b58，\u5faa\u73af\u4f9d\u8d56\u65f6 AOP \u4ee3\u7406\u5bf9\u8c61\u5c31\u6ca1\u529e\u6cd5\u6b63\u786e\u521b\u5efa\u3002<\/p>\n
\u6bcf\u884c\u6e90\u7801\u90fd\u6709\u5b83\u7684\u610f\u4e49\u3002createBeanInstance \u4f1a\u5224\u65ad\u7528\u54ea\u4e2a\u6784\u9020\u5668\u2014\u2014\u5982\u679c\u4f60\u6709\u591a\u4e2a\u6784\u9020\u5668，Spring \u4f1a\u9009\u53c2\u6570\u6700\u591a\u7684\u90a3\u4e2a（\u6216\u8005\u4f60\u660e\u786e\u6807\u6ce8\u4e86 @Autowired \u7684\u90a3\u4e2a）\u3002populateBean \u4e0d\u53ea\u662f\u8bbe\u503c，\u8fd8\u4f1a\u6267\u884c InstantiationAwareBeanPostProcessor \u7684\u81ea\u5b9a\u4e49\u6ce8\u5165\u903b\u8f91\u3002\u4f60\u81ea\u5b9a\u4e49\u6ce8\u89e3\u6ce8\u5165\u4e5f\u662f\u5728\u8fd9\u6b65\u901a\u8fc7\u5904\u7406\u5668\u5b9e\u73b0\u7684\u3002<\/p>\n
initializeBean() \u7684\u5185\u90e8\u5b9e\u73b0\u662f\u8fd9\u6837\u7684：<\/p>\n
\/\/ AbstractAutowireCapableBeanFactory.java \u2014 \u521d\u59cb\u5316\u9636\u6bb5
\nprotected Object initializeBean(String beanName, Object bean, RootBeanDefinition mbd) {
\n \/\/ \u7b2c\u4e94\u6b65：\u8c03\u7528 Aware \u63a5\u53e3
\n invokeAwareMethods(beanName, bean);
\n\/\/ \u7b2c\u516d\u6b65：Before \u5904\u7406\u5668
\nObject wrappedBean = applyBeanPostProcessorsBeforeInitialization(bean, beanName);<\/p>\n
\/\/ \u7b2c\u4e03\u6b65 + \u7b2c\u516b\u6b65：\u8c03\u7528\u521d\u59cb\u5316\u65b9\u6cd5
\ninvokeInitMethods(beanName, wrappedBean, mbd);<\/p>\n
\/\/ \u7b2c\u4e5d\u6b65：After \u5904\u7406\u5668 \u2190 AOP \u4ee3\u7406\u5728\u8fd9\u91cc
\nwrappedBean = applyBeanPostProcessorsAfterInitialization(wrappedBean, beanName);<\/p>\n
return wrappedBean;
\n}<\/p>\n
invokeAwareMethods() \u91cc\u6267\u884c\u7684\u5b9e\u9645\u4e0a\u662f\u4e09\u4e2a Aware \u7684\u5224\u65ad：<\/p>\n
private void invokeAwareMethods(String beanName, Object bean) {
\n if (bean instanceof Aware) {
\n if (bean instanceof BeanNameAware) {
\n ((BeanNameAware) bean).setBeanName(beanName);
\n }
\n if (bean instanceof BeanClassLoaderAware) {
\n ((BeanClassLoaderAware) bean).setBeanClassLoader(getBeanClassLoader());
\n }
\n if (bean instanceof BeanFactoryAware) {
\n ((BeanFactoryAware) bean).setBeanFactory(getBeanFactory());
\n }
\n }
\n}<\/p>\n
\u53ea\u5224\u65ad\u4e09\u4e2a Aware？\u7b49\u7b49\u2014\u2014\u4f60\u4e0d\u662f\u8bf4\u6709\u5341\u51e0\u4e2a Aware \u5417？\u786e\u5b9e\u6709：ApplicationContextAware\u3001EnvironmentAware\u3001ResourceLoaderAware\u3001ApplicationEventPublisherAware\u3001MessageSourceAware \u7b49\u7b49\u3002\u4f46\u90a3\u4e9b\u4e0d\u662f\u5728 initializeBean() \u91cc\u5904\u7406\u7684\u2014\u2014\u5b83\u4eec\u662f\u5728 ApplicationContextAwareProcessor（\u4e00\u4e2a BeanPostProcessor）\u7684 postProcessBeforeInitialization \u4e2d\u5904\u7406\u7684\u3002\u4e5f\u5c31\u662f\u8bf4，\u6240\u6709 ApplicationContext \u76f8\u5173\u7684 Aware \u662f\u5728\u7b2c\u516d\u6b65\u7684 applyBeanPostProcessorsBeforeInitialization \u4e2d\u6267\u884c\u7684，\u4e0d\u662f\u5728\u7b2c\u4e94\u6b65\u3002<\/p>\n
\u8fd9\u7ed9\u6211\u4eec\u7684\u6559\u8bad\u662f：Spring \u628a Aware \u5206\u6210\u4e86\u4e24\u7c7b\u2014\u2014\u5bb9\u5668\u6838\u5fc3 Aware（BeanName\u3001BeanFactory \u7b49）\u5728 invokeAwareMethods \u786c\u7f16\u7801\u5904\u7406，\u5e94\u7528\u4e0a\u4e0b\u6587\u7684 Aware \u8d70 BeanPostProcessor \u673a\u5236\u5904\u7406\u3002\u8fd9\u79cd\u5206\u5c42\u8bbe\u8ba1\u8bf4\u660e\u4e86 Spring \u6e90\u7801\u7684\u4e00\u4e2a\u7279\u70b9：\u80fd\u8d70\u6269\u5c55\u70b9\u8d70\u7684，\u7edd\u4e0d\u786c\u7f16\u7801\u3002<\/p>\n
\u987a\u4fbf\u8bf4\u4e00\u53e5，ApplicationContextAwareProcessor \u672c\u8eab\u5c31\u662f\u4e00\u4e2a\u5185\u7f6e\u7684 BeanPostProcessor，\u5b83\u5728 Spring \u5bb9\u5668\u542f\u52a8\u65f6\u7531 refresh() \u65b9\u6cd5\u4e2d\u7684 prepareBeanFactory() \u6ce8\u518c\u8fdb\u53bb\u7684\u3002\u4f60\u5728\u7b2c\u516d\u6b65\u7684 postProcessBeforeInitialization \u91cc\u80fd\u62ff\u5230 ApplicationContext，\u662f\u56e0\u4e3a\u8fd9\u4e2a\u5904\u7406\u5668\u5728 applyBeanPostProcessorsBeforeInitialization \u904d\u5386\u65f6\u6267\u884c\u4e86\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u5bf9\u4f60\u6765\u8bf4\u662f\u5b8c\u5168\u65e0\u611f\u7684\u2014\u2014\u4f60\u53ea\u9700\u8981\u8ba9\u4f60\u7684 Bean \u5b9e\u73b0 ApplicationContextAware \u63a5\u53e3，Spring \u5c31\u4f1a\u81ea\u52a8\u628a ApplicationContext \u4f20\u8fdb\u6765\u3002<\/p>\n
\u518d\u6765\u770b\u770b\u7b2c\u4e03\u6b65 invokeInitMethods \u5185\u90e8\u64cd\u4f5c\u7684\u987a\u5e8f：<\/p>\n
\/\/ \u521d\u59cb\u5316\u65b9\u6cd5\u8c03\u7528\u987a\u5e8f
\nprotected void invokeInitMethods(String beanName, Object bean, RootBeanDefinition mbd) {
\n \/\/ \u5148\u8c03 InitializingBean \u63a5\u53e3
\n if (bean instanceof InitializingBean) {
\n ((InitializingBean) bean).afterPropertiesSet();
\n }
\n \/\/ \u518d\u8c03\u81ea\u5b9a\u4e49 init-method（XML \u914d\u7f6e\u6216 @Bean(initMethod=…)）
\n if (mbd.getInitMethodName() != null) {
\n invokeCustomInitMethod(beanName, bean, mbd);
\n }
\n}<\/p>\n
\u6ce8\u610f\u987a\u5e8f：afterPropertiesSet \u5728\u524d，\u81ea\u5b9a\u4e49 init-method \u5728\u540e\u3002\u5982\u679c\u4f60\u7684 Bean \u540c\u65f6\u5b9e\u73b0\u4e86 InitializingBean \u548c\u914d\u7f6e\u4e86 init-method，afterPropertiesSet \u4f1a\u5148\u6267\u884c\u3002\u8fd9\u4e2a\u987a\u5e8f\u5728\u67d0\u4e9b\u573a\u666f\u4e0b\u5f88\u91cd\u8981\u2014\u2014\u6bd4\u5982\u4f60\u9700\u8981\u5728 afterPropertiesSet \u91cc\u9a8c\u8bc1\u6240\u6709\u5fc5\u8981\u5c5e\u6027\u5df2\u6ce8\u5165，\u7136\u540e\u5728 init-method \u91cc\u542f\u52a8\u4e00\u4e9b\u540e\u53f0\u7ebf\u7a0b\u6216\u8ba2\u9605\u6d88\u606f\u961f\u5217\u3002<\/p>\n
\u8fd8\u6709\u4e00\u4e2a\u5f88\u591a\u4eba\u5ffd\u7565\u7684\u7ec6\u8282：invokeCustomInitMethod \u8d70\u7684\u662f\u53cd\u5c04，\u800c\u4e14 Spring \u4f1a\u7f13\u5b58\u8fd9\u4e2a Method \u5bf9\u8c61，\u907f\u514d\u91cd\u590d\u53cd\u5c04\u5e26\u6765\u7684\u6027\u80fd\u5f00\u9500\u3002\u53e6\u5916\u5982\u679c\u4f60\u7684 init-method \u7684\u53c2\u6570\u5217\u8868\u662f () \u6216\u8005\u63a5\u6536 (String, Object[]) \u683c\u5f0f\u7684，Spring \u90fd\u80fd\u5904\u7406\u2014\u2014\u4f46\u5b9e\u9645\u4e0a\u5927\u90e8\u5206\u573a\u666f\u53ea\u9700\u8981\u65e0\u53c2\u65b9\u6cd5\u3002<\/p>\n
\/\/ AbstractAutoProxyCreator.java \u2014 \u5728 postProcessAfterInitialization \u4e2d\u521b\u5efa\u4ee3\u7406
\npublic Object postProcessAfterInitialization(Object bean, String beanName) {
\n if (bean != null) {
\n Object cacheKey = getCacheKey(bean.getClass(), beanName);
\n if (!this.earlyProxyReferences.contains(cacheKey)) {
\n \/\/ \u5224\u65ad\u662f\u5426\u9700\u8981\u5bf9\u5f53\u524d Bean \u521b\u5efa\u4ee3\u7406
\n return wrapIfNecessary(bean, beanName, cacheKey);
\n }
\n }
\n return bean;
\n}<\/p>\n
wrapIfNecessary \u505a\u7684\u4e8b：<\/p>\n
1. \u83b7\u53d6\u5f53\u524d Bean \u6240\u6709\u7684 Advisor（\u5207\u9762）<\/p>\n
2. \u7528 Pointcut \u5339\u914d Bean \u7684\u65b9\u6cd5<\/p>\n
3. \u5982\u679c\u5339\u914d\u4e0a，\u901a\u8fc7 DefaultAopProxyFactory \u521b\u5efa\u4ee3\u7406<\/p>\n
4. \u8fd4\u56de\u4ee3\u7406\u5bf9\u8c61\u66ff\u6362\u539f\u59cb Bean<\/p>\n
\u8fd9\u4e2a\u66ff\u6362\u662f\u900f\u660e\u7684\u2014\u2014\u5bb9\u5668\u91cc\u7684 Bean \u5173\u8054\u5df2\u7ecf\u53d8\u6210\u4e86\u4ee3\u7406\u5bf9\u8c61，\u540e\u7eed\u6ce8\u5165\u5230\u5176\u4ed6 Bean \u91cc\u7684\u4e5f\u662f\u8fd9\u4e2a\u4ee3\u7406\u3002<\/p>\n
\u4f46\u8fd9\u91cc\u6709\u4e00\u4e2a\u5927\u5751：postProcessAfterInitialization \u4e0d\u53ea\u662f AOP \u5728\u7528\u3002 Spring \u5185\u90e8\u6709\u5f88\u591a\u5185\u7f6e\u7684 BeanPostProcessor：AutowiredAnnotationBeanPostProcessor（\u5904\u7406 @Autowired）\u3001RequiredAnnotationBeanPostProcessor\u3001CommonAnnotationBeanPostProcessor（\u5904\u7406 @Resource\u3001@PostConstruct）\u7b49\u7b49\u3002\u6bcf\u4e2a BeanPostProcessor \u7684 order \u51b3\u5b9a\u4e86\u5b83\u4eec\u7684\u6267\u884c\u987a\u5e8f，\u8fd9\u76f4\u63a5\u5f71\u54cd\u4e86\u4f60\u7684 Bean \u6700\u7ec8\u88ab\u5904\u7406\u6210\u4ec0\u4e48\u6837\u3002<\/p>\n
\u5982\u679c\u8fd9\u4e9b\u5904\u7406\u5668\u7684\u987a\u5e8f\u9519\u4e86（\u6216\u8005\u4f60\u81ea\u5df1\u6ce8\u518c\u7684 BeanPostProcessor \u4f18\u5148\u7ea7\u4e0d\u5bf9），\u5c31\u4f1a\u51fa\u73b0"\u4e3a\u4ec0\u4e48\u6211\u7684 @Autowired \u6ca1\u751f\u6548"\u8fd9\u7c7b\u95ee\u9898\u3002<\/p>\n
\u8fd9\u4e2a\u4e5f\u662f\u9762\u8bd5\u9ad8\u9891\u6df7\u6dc6\u70b9\u3002<\/p>\n
BeanFactoryPostProcessor：\u5728 Bean \u5b9e\u4f8b\u5316\u4e4b\u524d\u6267\u884c，\u64cd\u4f5c\u7684\u662f BeanDefinition（Bean \u7684\u5b9a\u4e49\u5143\u6570\u636e）\u3002\u4f60\u53ef\u4ee5\u4fee\u6539 Bean \u7684 scope\u3001lazy-init \u6807\u8bb0\u3001\u5c5e\u6027\u503c\u7b49\u3002\u6267\u884c\u65f6\u673a\u5728 refresh() \u7684 invokeBeanFactoryPostProcessors() \u9636\u6bb5\u3002<\/p>\n
BeanPostProcessor：\u5728 Bean \u5b9e\u4f8b\u5316\u4e4b\u540e\u3001\u521d\u59cb\u5316\u524d\u540e\u6267\u884c，\u64cd\u4f5c\u7684\u662f Bean \u5b9e\u4f8b\u672c\u8eab\u3002\u4f60\u53ef\u4ee5\u5305\u88c5\u3001\u66ff\u6362\u3001\u4ee3\u7406 Bean\u3002<\/p>\n
\u7b80\u5355\u8bb0\u5fc6：\u524d\u8005\u6539\u914d\u7f6e，\u540e\u8005\u6539\u5bf9\u8c61\u3002<\/p>\n
\u8fd8\u6709\u4e00\u4e2a\u5bb9\u6613\u88ab\u5ffd\u7565\u7684\u70b9：BeanFactoryPostProcessor \u672c\u8eab\u4e0d\u652f\u6301 @Order \u6ce8\u89e3\u6765\u6392\u5e8f\u2014\u2014\u4f60\u5fc5\u987b\u5b9e\u73b0 PriorityOrdered \u6216 Ordered \u63a5\u53e3\u6765\u63a7\u5236\u6267\u884c\u987a\u5e8f\u3002\u8fd9\u4e00\u70b9\u8ddf BeanPostProcessor \u7684\u884c\u4e3a\u4e0d\u4e00\u81f4，\u9762\u8bd5\u5b98\u5076\u5c14\u4f1a\u62ff\u8fd9\u4e2a\u6765\u8003\u5bdf\u5019\u9009\u4eba\u5bf9\u6e90\u7801\u7684\u719f\u6089\u7a0b\u5ea6\u3002<\/p>\n
![\"\"](\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/08\/20260802044901-6a6ecc3d64dda.png\")
<\/p>\n
\u9664\u4e86\u4e0a\u9762\u7684\u6838\u5fc3 13 \u6b65，\u8fd8\u6709\u51e0\u4e2a\u9762\u8bd5\u5b98\u53ef\u80fd\u4f1a\u95ee\u7684\u94a9\u5b50：<\/p>\n
@PostConstruct \/ @PreDestroy：JSR-250 \u89c4\u8303\u5b9a\u4e49\u7684\u521d\u59cb\u5316\/\u9500\u6bc1\u65b9\u6cd5，\u5728 CommonAnnotationBeanPostProcessor \u4e2d\u5904\u7406\u3002@PostConstruct \u5728 postProcessBeforeInitialization \u4e2d\u6267\u884c（\u5728 afterPropertiesSet \u4e4b\u524d），@PreDestroy \u5728 destroy \u9636\u6bb5\u6267\u884c\u3002<\/p>\n
SmartInitializingSingleton：\u5728\u6240\u6709\u5355\u4f8b Bean \u90fd\u521d\u59cb\u5316\u5b8c\u6210\u540e\u89e6\u53d1\u3002afterSingletonsInstantiated() \u65b9\u6cd5\u5728\u6240\u6709 Bean \u521b\u5efa\u5b8c\u6bd5\u540e\u8c03\u7528\u4e00\u6b21，\u9002\u5408\u505a\u5168\u5c40\u540e\u7f6e\u5904\u7406\u2014\u2014\u6bd4\u5982\u542f\u52a8\u540e\u68c0\u67e5\u6240\u6709\u4f9d\u8d56\u662f\u5426\u5c31\u7eea\u3002<\/p>\n
Lifecycle \u63a5\u53e3：start() \u548c stop() \u65b9\u6cd5，\u4e3b\u8981\u7528\u4e8e\u7ba1\u7406\u5bb9\u5668\u751f\u547d\u5468\u671f\u5185\u7684\u542f\u52a8\u548c\u505c\u6b62\u884c\u4e3a\u3002Spring \u5bb9\u5668\u4f1a\u5728 refresh() \u7684\u6700\u540e\u8c03\u7528 startBeans()\u2014\u2014\u6240\u6709\u5b9e\u73b0\u4e86 Lifecycle \u7684 Bean \u4f1a\u6309\u4f9d\u8d56\u987a\u5e8f\u542f\u52a8\u3002\u8fd9\u5728 Spring Cloud \u6216\u6d88\u606f\u961f\u5217\u7684\u573a\u666f\u4e0b\u7279\u522b\u6709\u7528，\u6bd4\u5982\u786e\u4fdd\u8fde\u63a5\u6c60\u5728\u6d88\u606f\u76d1\u542c\u5668\u542f\u52a8\u4e4b\u524d\u5c31\u7eea\u3002<\/p>\n
SmartLifecycle：Lifecycle \u7684\u589e\u5f3a\u7248，\u591a\u4e86 getPhase() \u63a7\u5236\u542f\u52a8\u987a\u5e8f，\u4ee5\u53ca isAutoStartup() \u5224\u65ad\u662f\u5426\u81ea\u52a8\u542f\u52a8\u3002\u5982\u679c\u4f60\u7684\u5e94\u7528\u9700\u8981\u70ed\u52a0\u8f7d\u67d0\u4e9b\u7ec4\u4ef6，\u7528 SmartLifecycle \u6bd4\u7528 @EventListener(ContextRefreshedEvent.class) \u66f4\u4f18\u96c5\u3002<\/p>\n
"Spring Bean \u7684\u5b8c\u6574\u751f\u547d\u5468\u671f\u5206\u4e3a 13 \u6b65：\u5b9e\u4f8b\u5316（\u901a\u8fc7\u6784\u9020\u5668\u53cd\u5c04\u521b\u5efa\u5bf9\u8c61，\u540c\u65f6\u653e\u5165\u4e09\u7ea7\u7f13\u5b58\u89e3\u51b3\u5faa\u73af\u4f9d\u8d56）\u3001\u5c5e\u6027\u6ce8\u5165（\u5904\u7406 @Autowired\u3001@Resource\u3001@Value）\u3001Aware \u63a5\u53e3\u8c03\u7528（BeanName\u3001BeanClassLoader\u3001BeanFactory \u4e09\u4e2a\u786c\u7f16\u7801 + \u5176\u4ed6\u901a\u8fc7 BeanPostProcessor）\u3001BeanPostProcessor \u7684 Before \u5904\u7406\u5668（\u6267\u884c @PostConstruct）\u3001InitializingBean \u7684 afterPropertiesSet\u3001\u81ea\u5b9a\u4e49 init-method\u3001BeanPostProcessor \u7684 After \u5904\u7406\u5668（AOP \u4ee3\u7406\u5c31\u662f\u5728\u8fd9\u6b65\u521b\u5efa\u7684，AbstractAutoProxyCreator \u7684 wrapIfNecessary \u65b9\u6cd5\u5224\u65ad\u662f\u5426\u9700\u8981\u4ee3\u7406）\u3001Bean \u5c31\u7eea\u3001\u9500\u6bc1\u9636\u6bb5（@PreDestroy\u3001DisposableBean.destroy\u3001\u81ea\u5b9a\u4e49 destroy-method）\u3002\u6838\u5fc3\u7406\u89e3：BeanPostProcessor \u662f Spring \u6269\u5c55\u529f\u80fd\u7684\u57fa\u77f3\u2014\u2014\u6ca1\u6709\u5b83，AOP\u3001\u4e8b\u52a1\u3001@Autowired \u5168\u90e8\u65e0\u6cd5\u5de5\u4f5c\u3002\u533a\u5206 BeanFactoryPostProcessor（\u64cd\u4f5c BeanDefinition\u3001\u5728\u5b9e\u4f8b\u5316\u524d\u6267\u884c）\u548c BeanPostProcessor（\u64cd\u4f5c Bean \u5b9e\u4f8b\u3001\u5728\u521d\u59cb\u5316\u524d\u540e\u6267\u884c）\u3002\u6709\u4e24\u4e2a\u5bb9\u6613\u88ab\u5ffd\u7565\u7684\u94a9\u5b50：SmartInitializingSingleton（\u6240\u6709\u5355\u4f8b\u90fd\u521d\u59cb\u5316\u540e\u89e6\u53d1）\u548c SmartLifecycle（\u5bb9\u5668\u7ea7\u522b\u7684 start\/stop \u7ba1\u7406）\u3002"<\/p>\n
\u4e0b\u7bc7\u9884\u544a：\u9762\u8bd5\u5b98\u95ee\u7ebf\u7a0b\u6c60，\u5927\u90e8\u5206\u4eba\u53ea\u80cc\u4e86\u4e03\u4e2a\u53c2\u6570\u3002\u4e0b\u4e00\u7bc7\u6587\u7ae0\u804a ThreadPoolExecutor \u7684\u6838\u5fc3\u6e90\u7801\u2014\u2014\u961f\u5217\u6ee1\u4e86\u600e\u4e48\u529e\u3001\u62d2\u7edd\u7b56\u7565\u600e\u4e48\u9009\u3001\u6838\u5fc3\u7ebf\u7a0b\u6570\u5230\u5e95\u8bbe\u591a\u5c11\u5408\u9002\u3002<\/p>\n
><\/p>\n","protected":false},"excerpt":{"rendered":"
\u6458\u8981：\u672c\u6587\u6df1\u5165\u89e3\u6790 Spring Bean \u751f\u547d\u5468\u671f\u7684 13 \u4e2a\u6838\u5fc3\u6b65\u9aa4，\u4ece\u5b9e\u4f8b\u5316\u3001\u5c5e\u6027\u6ce8\u5165\u5230\u521d\u59cb\u5316\u524d\u540e\u7684 BeanPostProcessor \u94a9\u5b50\u673a\u5236\u3002\u91cd\u70b9\u63ed\u793a\u4e86 AOP \u4ee3\u7406\u5728 postProcessAfterInitialization \u9636\u6bb5\u521b\u5efa\u7684\u5e95\u5c42\u539f\u7406，\u4ee5\u53ca\u4e09\u7ea7\u7f13\u5b58\u89e3\u51b3\u5faa\u73af\u4f9d\u8d56\u7684\u5173\u952e\u8bbe\u8ba1\u3002\u6587\u7ae0\u8fd8\u5bf9\u6bd4\u4e86 BeanPostProcessor \u4e0e BeanFactoryPostProcessor \u7684\u533a\u522b，\u5e76\u4ecb\u7ecd\u4e86 P<\/p>\n","protected":false},"author":2,"featured_media":89094,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[99,101,292],"topic":[],"class_list":["post-89098","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-java","tag-spring","tag-292"],"yoast_head":"\n