對于自定義注解這里就不嘮叨了，百度一大堆，這里有我一個自定義注解

@Retention(RetentionPolicy.RUNTIME)@Target({ ElementType.METHOD })public @interface MsgEvent { RetailOrderEvent msgEvent();}

注解實現類

@Componentpublic class MsgEventProcessor implements BeanPostProcessor { /** * 事件消息注解與實例Bean的映射對象 */ public static Map<String, ServiceBean> EVENTCODESERVICEBEANMAP = new HashMap<String, ServiceBean>(); @Override public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException { return bean; } @Override public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException { Method[] methods = ReflectionUtils.getAllDeclaredMethods(bean.getClass()); if (methods != null) { for (Method method : methods) {MsgEvent myMsgEvent = AnnotationUtils.findAnnotation(method, MsgEvent.class);if (myMsgEvent != null) { String eventCode = myMsgEvent.msgEvent().eventCode(); ServiceBean servieBean = new ServiceBean(); servieBean.setServiceBeanObj(bean); servieBean.setServiceMethod(method); Class<?> argsCls = method.getParameterTypes()[0]; servieBean.setArgsCls(argsCls); EVENTCODESERVICEBEANMAP.put(eventCode, servieBean);} } } return bean; }}

調用者

@MsgEvent(msgEvent = RetailOrderEvent.PLACE_GENERALRETAILORDER) public Person getPerson(Person p) { return personMapper.getPerson(p.getId()); }

spring boot debug模式下啟動一直不會再代碼紅色部分停下，說明沒有獲取到自定義注解

原因是發現bean為jdk代理

解決辦法

@SpringBootApplication@EnableAspectJAutoProxy(exposeProxy = true)public class Application { public static void main(String[] args) { SpringApplication.run(Application.class, args); }}

或者

@ImportResource(locations = { 'classpath:spring-basic.xml' })@SpringBootApplication//@EnableAspectJAutoProxy(exposeProxy = true)public class Application { public static void main(String[] args) { SpringApplication.run(Application.class, args); }}

spring-basic.xml

<?xml version='1.0' encoding='UTF-8' ?><beans xmlns='http://www.springframework.org/schema/beans' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:context='http://www.springframework.org/schema/context' xmlns:aop='http://www.springframework.org/schema/aop' xsi:schemaLocation='http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd '> <!-- 配置使Spring采用CGLIB代理 --> <aop:aspectj-autoproxy expose-proxy='true' proxy-target- /> </beans>

上述會讓所有的都采用CGLIB代理，如果只想對使用的類采用，其他的還是原來的話就可以對注解使用類上標注@Configuration代替@Component

補充知識：解決Aspect注解基于注解的增強不生效的問題

Aspect基于注解的增強生效須滿足3個條件：

<!--1.代理方式設置為 cglib，默認false，則必須通過實現某個接口才能實現增強 --><aop:aspectj-autoproxy proxy-target- /> <!--2.配置文件中把須增強注解所在包掃描注入，或者配置 bean--><context:component-scan base-package='注解所在包路徑'/><!--3.配置文件中把@Aspect注解所在類對應包掃描注入 或者配置bean--><context:component-scan base-package='aspect注解所在包路徑'/>

ps : 若在 controller 層使用，則controller 也需要配置上邊兩個條件方能生效

以上這篇解決spring boot啟動掃描不到自定義注解的問題就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支持好吧啦網。