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The last packet successfully received from the server was 339 milliseconds ago. The last packet sen
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原因：应用方的数据库连接有效期时间，大于数据库自己设置的有效期
spring.datasource.hikari.idle-timeout：一个连接idle状态的最大时长（毫秒），超时则被释放（retired），缺省:20秒 但是数据库中设置的有效期是三秒。
解决：修改spring.datasource.hikari.idle-timeout配置为数据库自己设置的时间稍长一点为五秒时，问题解决。
以下是全部异常日志：
com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure
at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174) ~[mysql-connector-java-8.0.13.jar!/:8.0.13]
at com.mysql.cj.jdbc.ClientPreparedStatement.executeInternal(ClientPreparedStatement.java:974) ~[mysql-connector-java-8.0.13.jar!/:8.0.13]
The last packet successfully received from the server was 339 milliseconds ago. The last packet sent successfully to the server was 341 milliseconds ago.
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:64) ~[mysql-connector-java-8.0.13.jar!/:8.0.13]
2021-03-01 20:57:29.455 WARN 1 — [889-thread-1983] com.zaxxer.hikari.pool.ProxyConnection : HikariPool-1 - Connection com.mysql.cj.jdbc.ConnectionImpl@200cf9e9 marked as broken because of SQLSTATE(08S01), ErrorCode(0)
at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeQuery(HikariProxyPreparedStatement.java) [HikariCP-3.2.0.jar!/:na]
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1930) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at org.hibernate.query.internal.AbstractProducedQuery.getSingleResult(AbstractProducedQuery.java:1553) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final]
at sun.reflect.GeneratedMethodAccessor205.invoke(Unknown Source) ~[na:na]
at com.sun.proxy. P r o x y 138. g e t S i n g l e R e s u l t ( U n k n o w n S o u r c e ) [ n a : n a ] a t o r g . s p r i n g f r a m e w o r k . d a t a . j p a . r e p o s i t o r y . q u e r y . A b s t r a c t J p a Q u e r y . d o E x e c u t e ( A b s t r a c t J p a Q u e r y . j a v a : 136 ) [ s p r i n g − d a t a − j p a − 2.1.3. R E L E A S E . j a r ! / : 2.1.3. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . d a t a . p r o j e c t i o n . D e f a u l t M e t h o d I n v o k i n g M e t h o d I n t e r c e p t o r . i n v o k e ( D e f a u l t M e t h o d I n v o k i n g M e t h o d I n t e r c e p t o r . j a v a : 59 ) [ s p r i n g − d a t a − c o m m o n s − 2.1.3. R E L E A S E . j a r ! / : 2.1.3. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . a o p . f r a m e w o r k . R e f l e c t i v e M e t h o d I n v o c a t i o n . p r o c e e d ( R e f l e c t i v e M e t h o d I n v o c a t i o n . j a v a : 186 ) [ s p r i n g − a o p − 5.1.3. R E L E A S E . j a r ! / : 5.1.3. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . t r a n s a c t i o n . i n t e r c e p t o r . T r a n s a c t i o n A s p e c t S u p p o r t . i n v o k e W i t h i n T r a n s a c t i o n ( T r a n s a c t i o n A s p e c t S u p p o r t . j a v a : 294 ) [ s p r i n g − t x − 5.1.3. R E L E A S E . j a r ! / : 5.1.3. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . t r a n s a c t i o n . i n t e r c e p t o r . T r a n s a c t i o n I n t e r c e p t o r . i n v o k e ( T r a n s a c t i o n I n t e r c e p t o r . j a v a : 98 ) [ s p r i n g − t x − 5.1.3. R E L E A S E . j a r ! / : 5.1.3. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . a o p . f r a m e w o r k . R e f l e c t i v e M e t h o d I n v o c a t i o n . p r o c e e d ( R e f l e c t i v e M e t h o d I n v o c a t i o n . j a v a : 186 ) [ s p r i n g − a o p − 5.1.3. R E L E A S E . j a r ! / : 5.1.3. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . a o p . i n t e r c e p t o r . E x p o s e I n v o c a t i o n I n t e r c e p t o r . i n v o k e ( E x p o s e I n v o c a t i o n I n t e r c e p t o r . j a v a : 93 ) [ s p r i n g − a o p − 5.1.3. R E L E A S E . j a r ! / : 5.1.3. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . d a t a . r e p o s i t o r y . c o r e . s u p p o r t . S u r r o u n d i n g T r a n s a c t i o n D e t e c t o r M e t h o d I n t e r c e p t o r . i n v o k e ( S u r r o u n d i n g T r a n s a c t i o n D e t e c t o r M e t h o d I n t e r c e p t o r . j a v a : 61 ) [ s p r i n g − d a t a − c o m m o n s − 2.1.3. R E L E A S E . j a r ! / : 2.1.3. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . a o p . f r a m e w o r k . R e f l e c t i v e M e t h o d I n v o c a t i o n . p r o c e e d ( R e f l e c t i v e M e t h o d I n v o c a t i o n . j a v a : 186 ) [ s p r i n g − a o p − 5.1.3. R E L E A S E . j a r ! / : 5.1.3. R E L E A S E ] a t c o m . s u n . p r o x y . Proxy138.getSingleResult(Unknown Source) [na:na] at org.springframework.data.jpa.repository.query.AbstractJpaQuery.doExecute(AbstractJpaQuery.java:136) [spring-data-jpa-2.1.3.RELEASE.jar!/:2.1.3.RELEASE] at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:59) ~[spring-data-commons-2.1.3.RELEASE.jar!/:2.1.3.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.3.RELEASE.jar!/:5.1.3.RELEASE] at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:294) ~[spring-tx-5.1.3.RELEASE.jar!/:5.1.3.RELEASE] at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98) ~[spring-tx-5.1.3.RELEASE.jar!/:5.1.3.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.3.RELEASE.jar!/:5.1.3.RELEASE] at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93) ~[spring-aop-5.1.3.RELEASE.jar!/:5.1.3.RELEASE] at org.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:61) ~[spring-data-commons-2.1.3.RELEASE.jar!/:2.1.3.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.1.3.RELEASE.jar!/:5.1.3.RELEASE] at com.sun.proxy. Proxy138.getSingleResult(UnknownSource)[na:na]atorg.springframework.data.jpa.repository.query.AbstractJpaQuery.doExecute(AbstractJpaQuery.java:136)[spring−data−jpa−2.1.3.RELEASE.jar!/:2.1.3.RELEASE]atorg.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:59) [spring−data−commons−2.1.3.RELEASE.jar!/:2.1.3.RELEASE]atorg.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) [spring−aop−5.1.3.RELEASE.jar!/:5.1.3.RELEASE]atorg.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:294) [spring−tx−5.1.3.RELEASE.jar!/:5.1.3.RELEASE]atorg.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98) [spring−tx−5.1.3.RELEASE.jar!/:5.1.3.RELEASE]atorg.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) [spring−aop−5.1.3.RELEASE.jar!/:5.1.3.RELEASE]atorg.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:93) [spring−aop−5.1.3.RELEASE.jar!/:5.1.3.RELEASE]atorg.springframework.data.repository.core.support.SurroundingTransactionDetectorMethodInterceptor.invoke(SurroundingTransactionDetectorMethodInterceptor.java:61) [spring−data−commons−2.1.3.RELEASE.jar!/:2.1.3.RELEASE]atorg.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) [spring−aop−5.1.3.RELEASE.jar!/:5.1.3.RELEASE]atcom.sun.proxy.Proxy128.findFirstByAIdOrderByCreateTimeDesc(Unknown Source) ~[na:na]
at org.apache.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:47) ~[dubbo-2.7.7.jar!/:2.7.7]
at org.apache.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:84) ~[dubbo-2.7.7.jar!/:2.7.7]
at org.apache.dubbo.config.invoker.DelegateProviderMetaDataInvoker.invoke(DelegateProviderMetaDataInvoker.java:56) ~[dubbo-2.7.7.jar!/:2.7.7]
at org.apache.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:52) ~[dubbo-2.7.7.jar!/:2.7.7]
at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper 1. i n v o k e ( P r o t o c o l F i l t e r W r a p p e r . j a v a : 81 ) [ d u b b o − 2.7.7. j a r ! / : 2.7.7 ] a t j a v a . u t i l . c o n c u r r e n t . T h r e a d P o o l E x e c u t o r . r u n W o r k e r ( T h r e a d P o o l E x e c u t o r . j a v a : 1149 ) [ n a : 1.8. 0 1 91 ] a t c o m . m y s q l . c j . e x c e p t i o n s . E x c e p t i o n F a c t o r y . c r e a t e E x c e p t i o n ( E x c e p t i o n F a c t o r y . j a v a : 61 ) [ m y s q l − c o n n e c t o r − j a v a − 8.0.13. j a r ! / : 8.0.13 ] a t c o m . m y s q l . c j . e x c e p t i o n s . E x c e p t i o n F a c t o r y . c r e a t e E x c e p t i o n ( E x c e p t i o n F a c t o r y . j a v a : 105 ) [ m y s q l − c o n n e c t o r − j a v a − 8.0.13. j a r ! / : 8.0.13 ] a t c o m . m y s q l . c j . e x c e p t i o n s . E x c e p t i o n F a c t o r y . c r e a t e C o m m u n i c a t i o n s E x c e p t i o n ( E x c e p t i o n F a c t o r y . j a v a : 167 ) [ m y s q l − c o n n e c t o r − j a v a − 8.0.13. j a r ! / : 8.0.13 ] a t c o m . m y s q l . c j . p r o t o c o l . a . N a t i v e P r o t o c o l . s e n d C o m m a n d ( N a t i v e P r o t o c o l . j a v a : 664 ) [ m y s q l − c o n n e c t o r − j a v a − 8.0.13. j a r ! / : 8.0.13 ] a t c o m . m y s q l . c j . j d b c . C l i e n t P r e p a r e d S t a t e m e n t . e x e c u t e I n t e r n a l ( C l i e n t P r e p a r e d S t a t e m e n t . j a v a : 951 ) [ m y s q l − c o n n e c t o r − j a v a − 8.0.13. j a r ! / : 8.0.13 ] C a u s e d b y : j a v a . i o . E O F E x c e p t i o n : C a n n o t r e a d r e s p o n s e f r o m s e r v e r . E x p e c t e d t o r e a d 4 b y t e s , r e a d 0 b y t e s b e f o r e c o n n e c t i o n w a s u n e x p e c t e d l y l o s t . a t c o m . m y s q l . c j . p r o t o c o l . a . S i m p l e P a c k e t R e a d e r . r e a d H e a d e r ( S i m p l e P a c k e t R e a d e r . j a v a : 63 ) [ m y s q l − c o n n e c t o r − j a v a − 8.0.13. j a r ! / : 8.0.13 ] a t c o m . m y s q l . c j . p r o t o c o l . a . T i m e T r a c k i n g P a c k e t R e a d e r . r e a d H e a d e r ( T i m e T r a c k i n g P a c k e t R e a d e r . j a v a : 52 ) [ m y s q l − c o n n e c t o r − j a v a − 8.0.13. j a r ! / : 8.0.13 ] a t c o m . m y s q l . c j . p r o t o c o l . a . N a t i v e P r o t o c o l . r e a d M e s s a g e ( N a t i v e P r o t o c o l . j a v a : 549 ) [ m y s q l − c o n n e c t o r − j a v a − 8.0.13. j a r ! / : 8.0.13 ] T h e l a s t p a c k e t s u c c e s s f u l l y r e c e i v e d f r o m t h e s e r v e r w a s 339 m i l l i s e c o n d s a g o . T h e l a s t p a c k e t s e n t s u c c e s s f u l l y t o t h e s e r v e r w a s 341 m i l l i s e c o n d s a g o . a t c o m . m y s q l . c j . j d b c . C l i e n t P r e p a r e d S t a t e m e n t . e x e c u t e Q u e r y 1.invoke(ProtocolFilterWrapper.java:81) ~[dubbo-2.7.7.jar!/:2.7.7] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_191] at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) ~[mysql-connector-java-8.0.13.jar!/:8.0.13] at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) ~[mysql-connector-java-8.0.13.jar!/:8.0.13] at com.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) ~[mysql-connector-java-8.0.13.jar!/:8.0.13] at com.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:664) ~[mysql-connector-java-8.0.13.jar!/:8.0.13] at com.mysql.cj.jdbc.ClientPreparedStatement.executeInternal(ClientPreparedStatement.java:951) ~[mysql-connector-java-8.0.13.jar!/:8.0.13] Caused by: java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost. at com.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:63) ~[mysql-connector-java-8.0.13.jar!/:8.0.13] at com.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:52) ~[mysql-connector-java-8.0.13.jar!/:8.0.13] at com.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:549) ~[mysql-connector-java-8.0.13.jar!/:8.0.13] The last packet successfully received from the server was 339 milliseconds ago. The last packet sent successfully to the server was 341 milliseconds ago. at com.mysql.cj.jdbc.ClientPreparedStatement.executeQuery 1.invoke(ProtocolFilterWrapper.java:81) [dubbo−2.7.7.jar!/:2.7.7]atjava.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0191]atcom.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:61) [mysql−connector−java−8.0.13.jar!/:8.0.13]atcom.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:105) [mysql−connector−java−8.0.13.jar!/:8.0.13]atcom.mysql.cj.exceptions.ExceptionFactory.createCommunicationsException(ExceptionFactory.java:167) [mysql−connector−java−8.0.13.jar!/:8.0.13]atcom.mysql.cj.protocol.a.NativeProtocol.sendCommand(NativeProtocol.java:664) [mysql−connector−java−8.0.13.jar!/:8.0.13]atcom.mysql.cj.jdbc.ClientPreparedStatement.executeInternal(ClientPreparedStatement.java:951) [mysql−connector−java−8.0.13.jar!/:8.0.13]Causedby:java.io.EOFException:Cannotreadresponsefromserver.Expectedtoread4bytes,read0bytesbeforeconnectionwasunexpectedlylost.atcom.mysql.cj.protocol.a.SimplePacketReader.readHeader(SimplePacketReader.java:63) [mysql−connector−java−8.0.13.jar!/:8.0.13]atcom.mysql.cj.protocol.a.TimeTrackingPacketReader.readHeader(TimeTrackingPacketReader.java:52) [mysql−connector−java−8.0.13.jar!/:8.0.13]atcom.mysql.cj.protocol.a.NativeProtocol.readMessage(NativeProtocol.java:549) [mysql−connector−java−8.0.13.jar!/:8.0.13]Thelastpacketsuccessfullyreceivedfromtheserverwas339millisecondsago.Thelastpacketsentsuccessfullytotheserverwas341millisecondsago.atcom.mysql.cj.jdbc.ClientPreparedStatement.executeQueryoriginal w f q M S t e B ( C l i e n t P r e p a r e d S t a t e m e n t . j a v a : 1024 ) [ m y s q l − c o n n e c t o r − j a v a − 8.0.13. j a r ! / : 8.0.13 ] a t o r g . h i b e r n a t e . e n g i n e . j d b c . i n t e r n a l . R e s u l t S e t R e t u r n I m p l . e x t r a c t ( R e s u l t S e t R e t u r n I m p l . j a v a : 60 ) [ h i b e r n a t e − c o r e − 5.3.7. F i n a l . j a r ! / : 5.3.7. F i n a l ] a t o r g . h i b e r n a t e . l o a d e r . L o a d e r . g e t R e s u l t S e t ( L o a d e r . j a v a : 2167 ) [ h i b e r n a t e − c o r e − 5.3.7. F i n a l . j a r ! / : 5.3.7. F i n a l ] a t o r g . h i b e r n a t e . l o a d e r . L o a d e r . e x e c u t e Q u e r y S t a t e m e n t ( L o a d e r . j a v a : 1892 ) [ h i b e r n a t e − c o r e − 5.3.7. F i n a l . j a r ! / : 5.3.7. F i n a l ] a t o r g . h i b e r n a t e . l o a d e r . L o a d e r . d o Q u e r y A n d I n i t i a l i z e N o n L a z y C o l l e c t i o n s ( L o a d e r . j a v a : 340 ) [ h i b e r n a t e − c o r e − 5.3.7. F i n a l . j a r ! / : 5.3.7. F i n a l ] a t o r g . h i b e r n a t e . l o a d e r . L o a d e r . d o L i s t ( L o a d e r . j a v a : 2689 ) [ h i b e r n a t e − c o r e − 5.3.7. F i n a l . j a r ! / : 5.3.7. F i n a l ] a t o r g . h i b e r n a t e . l o a d e r . L o a d e r . d o L i s t ( L o a d e r . j a v a : 2672 ) [ h i b e r n a t e − c o r e − 5.3.7. F i n a l . j a r ! / : 5.3.7. F i n a l ] a t o r g . h i b e r n a t e . h q l . i n t e r n a l . a s t . Q u e r y T r a n s l a t o r I m p l . l i s t ( Q u e r y T r a n s l a t o r I m p l . j a v a : 395 ) [ h i b e r n a t e − c o r e − 5.3.7. F i n a l . j a r ! / : 5.3.7. F i n a l ] a t o r g . s p r i n g f r a m e w o r k . d a t a . j p a . r e p o s i t o r y . q u e r y . A b s t r a c t J p a Q u e r y . e x e c u t e ( A b s t r a c t J p a Q u e r y . j a v a : 125 ) [ s p r i n g − d a t a − j p a − 2.1.3. R E L E A S E . j a r ! / : 2.1.3. R E L E A S E ] a t o r g . s p r i n g f r a m e w o r k . d a t a . j p a . r e p o s i t o r y . s u p p o r t . C r u d M e t h o d M e t a d a t a P o s t P r o c e s s o r wfqMSteB(ClientPreparedStatement.java:1024) ~[mysql-connector-java-8.0.13.jar!/:8.0.13] at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:60) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final] at org.hibernate.loader.Loader.getResultSet(Loader.java:2167) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final] at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1892) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final] at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:340) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final] at org.hibernate.loader.Loader.doList(Loader.java:2689) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final] at org.hibernate.loader.Loader.doList(Loader.java:2672) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final] at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:395) [hibernate-core-5.3.7.Final.jar!/:5.3.7.Final] at org.springframework.data.jpa.repository.query.AbstractJpaQuery.execute(AbstractJpaQuery.java:125) [spring-data-jpa-2.1.3.RELEASE.jar!/:2.1.3.RELEASE] at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor wfqMSteB(ClientPreparedStatement.java:1024) [mysql−connector−java−8.0.13.jar!/:8.0.13]atorg.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:60)[hibernate−core−5.3.7.Final.jar!/:5.3.7.Final]atorg.hibernate.loader.Loader.getResultSet(Loader.java:2167)[hibernate−core−5.3.7.Final.jar!/:5.3.7.Final]atorg.hibernate.loader.Loader.executeQueryStatement(Loader.java:1892)[hibernate−core−5.3.7.Final.jar!/:5.3.7.Final]atorg.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:340)[hibernate−core−5.3.7.Final.jar!/:5.3.7.Final]atorg.hibernate.loader.Loader.doList(Loader.java:2689)[hibernate−core−5.3.7.Final.jar!/:5.3.7.Final]atorg.hibernate.loader.Loader.doList(Loader.java:2672)[hibernate−core−5.3.7.Final.jar!/:5.3.7.Final]atorg.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:395)[hibernate−core−5.3.7.Final.jar!/:5.3.7.Final]atorg.springframework.data.jpa.repository.query.AbstractJpaQuery.execute(AbstractJpaQuery.java:125)[spring−data−jpa−2.1.3.RELEASE.jar!/:2.1.3.RELEASE]atorg.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessorCrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:135) ~[spring-data-jpa-2.1.3.RELEASE.jar!/:2.1.3.RELEASE]
at org.apache.dubbo.common.bytecode.Wrapper12.invokeMethod(Wrapper12.java) ~[dubbo-2.7.7.jar!/:2.7.7]
at org.apache.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:56) ~[dubbo-2.7.7.jar!/:2.7.7]
at org.apache.dubbo.monitor.support.MonitorFilter.invoke o r i g i n a l original originalwvCJW7w2 a c c e s s o r accessor accessorkfUGAiqd(MonitorFilter.java) ~[dubbo-2.7.7.jar!/:2.7.7]
at org.apache.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:46) ~[dubbo-2.7.7.jar!/:2.7.7]
at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:81) ~[dubbo-2.7.7.jar!/:2.7.7]
at org.apache.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:81) ~[dubbo-2.7.7.jar!/:2.7.7]
at org.apache.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:145) ~[dubbo-2.7.7.jar!/:2.7.7]
at org.apache.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:175) ~[dubbo-2.7.7.jar!/:2.7.7]
at org.apache.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:51) ~[dubbo-2.7.7.jar!/:2.7.7]
at java.lang.reflect.Constructor.newInstance(Constructor.java:423) ~[na:1.8.0_191]
at com.mysql.cj.protocol.a.NativeProtocol.checkErrorMessage(NativeProtocol.java:725) ~[mysql-connector-java-8.0.13.jar!/:8.0.13]
at com.mysql.cj.protocol.a.NativeProtocol.sendQueryPacket(NativeProtocol.java:979) ~[mysql-connector-java-8.0.13.jar!/:8.0.13]
at com.mysql.cj.protocol.a.MultiPacketReader.readHeader(MultiPacketReader.java:44) ~[mysql-connector-java-8.0.13.jar!/:8.0.13]
