天才只可以体会，但绝不能模仿。——狄德罗
对于spring bean销毁，可以使用两种方式：
1.实现org.springframework.beans.factory.DisposableBean接口，重写destroy方法
2.添加jakarta.annotation.PreDestroy注解
但是要注意，例如我这里的代码：
import io.agora.rtm.RtmClient; import jakarta.annotation.PreDestroy; import jakarta.annotation.Resource; import lombok.extern.slf4j.Slf4j; import org.springframework.boot.context.properties.EnableConfigurationProperties; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.context.annotation.Lazy; @Slf4j @Configuration @EnableConfigurationProperties(AgoraProperties.class) public class AgoraRtmConfig { @Resource private AgoraRtmClientListener agoraRtmClientListener; @Resource private AgoraProperties agoraProperties; @Lazy @Resource private RtmClient rtmClient; @Bean public RtmClient rtmClient() throws Exception { var mRtmClient = RtmClient.createInstance(agoraProperties.getAppId(), agoraRtmClientListener); mRtmClient.login(AgoraUtil.generateRtmToken(), AgoraUtil.getServerId(), AgoraUtil.resultCallback("login")); return mRtmClient; } @PreDestroy public void destroy() { rtmClient.logout(null); rtmClient.release(); } }
这里添加了@Lazy避免循环注入，但是还是报错了：
org.springframework.beans.factory.BeanCreationNotAllowedException: Error creating bean with name 'rtmClient': Singleton bean creation not allowed while singletons of this factory are in destruction (Do not request a bean from a BeanFactory in a destroy method implementation!) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:220) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:205) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.resolveBeanByName(AbstractAutowireCapableBeanFactory.java:458) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.autowireResource(CommonAnnotationBeanPostProcessor.java:496) ~[spring-context-6.0.4.jar:6.0.4] at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor.getResource(CommonAnnotationBeanPostProcessor.java:467) ~[spring-context-6.0.4.jar:6.0.4] at org.springframework.context.annotation.CommonAnnotationBeanPostProcessor$1.getTarget(CommonAnnotationBeanPostProcessor.java:419) ~[spring-context-6.0.4.jar:6.0.4] at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:687) ~[spring-aop-6.0.4.jar:6.0.4] at io.agora.rtm.RtmClient$$SpringCGLIB$$0.logout(<generated>) ~[agora-rtm-sdk-1.0.jar:na] at com.ruben.infra.rtm.AgoraRtmConfig.destroy(AgoraRtmConfig.java:34) ~[classes/:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na] at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77) ~[na:na] at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na] at java.base/java.lang.reflect.Method.invoke(Method.java:568) ~[na:na] at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:424) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeDestroyMethods(InitDestroyAnnotationBeanPostProcessor.java:382) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeDestruction(InitDestroyAnnotationBeanPostProcessor.java:212) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.DisposableBeanAdapter.destroy(DisposableBeanAdapter.java:191) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroyBean(DefaultSingletonBeanRegistry.java:587) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingleton(DefaultSingletonBeanRegistry.java:559) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingleton(DefaultListableBeanFactory.java:1177) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.destroySingletons(DefaultSingletonBeanRegistry.java:520) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.beans.factory.support.DefaultListableBeanFactory.destroySingletons(DefaultListableBeanFactory.java:1170) ~[spring-beans-6.0.4.jar:6.0.4] at org.springframework.context.support.AbstractApplicationContext.destroyBeans(AbstractApplicationContext.java:1082) ~[spring-context-6.0.4.jar:6.0.4] at org.springframework.context.support.AbstractApplicationContext.doClose(AbstractApplicationContext.java:1051) ~[spring-context-6.0.4.jar:6.0.4] at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.doClose(ReactiveWebServerApplicationContext.java:149) ~[spring-boot-3.0.2.jar:3.0.2] at org.springframework.context.support.AbstractApplicationContext.close(AbstractApplicationContext.java:1001) ~[spring-context-6.0.4.jar:6.0.4] at org.springframework.boot.SpringApplicationShutdownHook.closeAndWait(SpringApplicationShutdownHook.java:139) ~[spring-boot-3.0.2.jar:3.0.2] at java.base/java.lang.Iterable.forEach(Iterable.java:75) ~[na:na] at org.springframework.boot.SpringApplicationShutdownHook.run(SpringApplicationShutdownHook.java:108) ~[spring-boot-3.0.2.jar:3.0.2] at java.base/java.lang.Thread.run(Thread.java:840) ~[na:na]
主要是这句：
Singleton bean creation not allowed while singletons of this factory are in destruction (Do not request a bean from a BeanFactory in a destroy method implementation!)
提示不要在bean销毁时从BeanFactory请求一个bean
解决办法是再新建一个类来管理：
import io.agora.rtm.RtmChannel; import io.agora.rtm.RtmClient; import org.springframework.beans.factory.DisposableBean; import org.springframework.stereotype.Component; import java.util.Collections; import java.util.Set; @Component public class RtmClientAdapter implements DisposableBean { private final RtmClient rtmClient; public RtmClientAdapter(RtmClient rtmClient) { this.rtmClient = rtmClient; } @Override public void destroy() { getChannels().forEach(RtmChannel::release); rtmClient.logout(null); rtmClient.release(); } }
