大家好，我是烤鸭：
    问题记录，上线之后懵逼的问题。只能回滚?每次都是上线来暴击，不然多查查文章也不至于这么被动。

报错日志

org.springframework.data.redis.serializer.SerializationException: Cannot deserialize; nested exception is org.springframework.core.serializer.support.SerializationFailedException: Failed to deserialize payload. Is the byte array a result of corresponding serialization for DefaultDeserializer?; nested exception is java.io.InvalidClassException: com.xxxx.xxxxc.core.pojo.vo.Resource; local class incompatible: stream classdesc serialVersionUID = 3936163953604439376, local class serialVersionUID = 4124973216730560840at org.springframework.data.redis.serializer.JdkSerializationRedisSerializer.deserialize(JdkSerializationRedisSerializer.java:84)at org.springframework.data.redis.serializer.SerializationUtils.deserializeValues(SerializationUtils.java:54)at org.springframework.data.redis.serializer.SerializationUtils.deserialize(SerializationUtils.java:68)at org.springframework.data.redis.core.AbstractOperations.deserializeValues(AbstractOperations.java:269)at org.springframework.data.redis.core.DefaultValueOperations.multiGet(DefaultValueOperations.java:182)at com.xxxx.xxxxc.core.service.impl.XxxxcServiceImpl.getCXXXX(XxxxcServiceImpl.java:171)at com.xxxx.xxxxc.core.service.impl.XxxxcServiceImpl.getCXXXX1(XxxxcServiceImpl.java:428)at com.xxxx.xxxxc.core.service.impl.XxxxcServiceImpl$$FastClassBySpringCGLIB$$bef756bd.invoke(<generated>)at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:687)at com.xxxx.xxxxc.core.service.impl.XxxxcServiceImpl$$EnhancerBySpringCGLIB$$e5853a01.getCXXXX1(<generated>)at sun.reflect.GeneratedMethodAccessor698.invoke(Unknown Source)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:498)at org.springframework.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:282)at org.springframework.cloud.context.scope.GenericScope$LockedScopedProxyFactoryBean.invoke(GenericScope.java:499)at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:691)at com.xxxx.xxxxc.core.service.impl.XxxxcServiceImpl$$EnhancerBySpringCGLIB$$a8e9635a.getCXXXX1(<generated>)at com.xxxx.xxxxc.controller.CXXXXBaseController.CXXXXFlow$original$tm1stvRt(CXXXXBaseController.java:472)at com.xxxx.xxxxc.controller.CXXXXBaseController.CXXXXFlow$original$tm1stvRt$accessor$l6PMstid(CXXXXBaseController.java)at com.xxxx.xxxxc.controller.CXXXXBaseController$auxiliary$qLsnIVj2.call(Unknown Source)at com.xxxx.xxxxc.controller.CXXXXBaseController.CXXXXFlow(CXXXXBaseController.java)at com.xxxx.xxxxc.controller.CXXXXBaseController$$FastClassBySpringCGLIB$$c8ec8734.invoke(<generated>)at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:687)at com.xxxx.xxxxc.controller.CXXXXBaseController$$EnhancerBySpringCGLIB$$ab6f4dc6.CXXXXFlow(<generated>)at sun.reflect.GeneratedMethodAccessor259.invoke(Unknown Source)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:498)at org.springframework.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:282)at org.springframework.cloud.context.scope.GenericScope$LockedScopedProxyFactoryBean.invoke(GenericScope.java:499)at

过程回溯

大半夜上线之后，报错日志 哐哐哐 来了，第一时间很慌，怎么办，先回滚吧。回滚之后没问题了，可是线还得上，找找啥原因吧。

某个实体反序列化出问题了，第一时间万能的csdn上一顿搜。

这也太简单了，赶紧改完了上线，灰度一台，又报错了，懵了，坑人啊。

中间还折腾了一段反序列化忽略字段的弯路，血泪教训。

后来干脆不解决了，知道是缓存的问题，还好过期时间短，等过期完了就好了。

原因是啥

redistemplate 采用hash存储的时候，序列化id也存进去了，导致实体有字段修改之后，序列化id就对不上了，因为不是一个实体了。

解决方案

• 删redis
• 去掉多加的字段，还原实体
• 换key

需求发版，把实体改回去不太现实了，缓存数量太多，临时清也来不及。

如果不是对redis强依赖的场景，改key吧，起码不会报错了。

相关文章

https://www.zhangshilong.cn/work/409210.html

https://www.jianshu.com/p/acbc7e83e038