小贝子编程

JpaSystemException: Could not set value of type



我正在编写一个简单的REST API。到目前为止，我有一个用户和一个电路实体。基于Hibernate注解，我创建了一个db模式。

package com.hydrogarden.server.circuit;
import jakarta.transaction.Transactional;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service
@Transactional
public class CircuitService {
@Autowired
private CircuitRepository circuitRepository;
public List<Circuit> findAll(){
return circuitRepository.findAll();
}
public Circuit findById(int id) {
return circuitRepository.findById(id).get();
}
}


@Entity
@Table(name="user")
public class User extends AbstractEntity {
private String userName;
private String hashPassword;
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getHashPassword() {
return hashPassword;
}
public void setHashPassword(String hashPassword) {
this.hashPassword = hashPassword;
}

public User() {
}
public User(String userName, String hashPassword) {
super();
this.userName = userName;
this.hashPassword = hashPassword;
}
}

package com.hydrogarden.server.circuit;
import com.hydrogarden.server.AbstractEntity;
import com.hydrogarden.server.user.User;
import jakarta.persistence.*;
@Entity
@Table(name="circuit")
public class Circuit extends AbstractEntity {
private String code;
private String name;
@ManyToOne(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
@JoinColumn(name = "user_id")
private User user;
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}

}

package com.hydrogarden.server;
import jakarta.persistence.*;
import java.io.Serializable;
@Entity
@Inheritance(strategy= InheritanceType.TABLE_PER_CLASS)
public abstract class AbstractEntity implements Serializable {
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
private Long id;
@Version
private Long version;
public AbstractEntity() {
}
public AbstractEntity(Long id, Long version) {
super();
this.id = id;
this.version = version;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public Long getVersion() {
return version;
}
public void setVersion(Long version) {
this.version = version;
}
}

现在调用findAll和findById方法时发生以下错误:(

2022-12-29T01:01:31.512+01:00 ERROR 6672 --- [nio-8080-exec-2] o.a.c.c.C.[.[.[/].[dispatcherServlet]    : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed: org.springframework.orm.jpa.JpaSystemException: Could not set value of type [com.hydrogarden.server.circuit.Circuit] : `com.hydrogarden.server.circuit.Circuit.user` (setter)] with root cause
java.lang.IllegalArgumentException: Can not set com.hydrogarden.server.user.User field com.hydrogarden.server.circuit.Circuit.user to com.hydrogarden.server.circuit.Circuit
at java.base/jdk.internal.reflect.FieldAccessorImpl.throwSetIllegalArgumentException(FieldAccessorImpl.java:228) ~[na:na]
at java.base/jdk.internal.reflect.FieldAccessorImpl.throwSetIllegalArgumentException(FieldAccessorImpl.java:232) ~[na:na]
at java.base/jdk.internal.reflect.MethodHandleObjectFieldAccessorImpl.set(MethodHandleObjectFieldAccessorImpl.java:115) ~[na:na]
at java.base/java.lang.reflect.Field.set(Field.java:820) ~[na:na]
at org.hibernate.property.access.spi.SetterFieldImpl.set(SetterFieldImpl.java:53) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.persister.entity.AbstractEntityPersister.setPropertyValues(AbstractEntityPersister.java:5140) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.sql.results.graph.entity.AbstractEntityInitializer.initializeEntity(AbstractEntityInitializer.java:728) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.sql.results.graph.entity.AbstractEntityInitializer.initializeInstance(AbstractEntityInitializer.java:671) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.sql.results.internal.StandardRowReader.coordinateInitializers(StandardRowReader.java:152) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.sql.results.internal.StandardRowReader.readRow(StandardRowReader.java:97) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.sql.results.spi.ListResultsConsumer.consume(ListResultsConsumer.java:184) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.sql.results.spi.ListResultsConsumer.consume(ListResultsConsumer.java:33) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.doExecuteQuery(JdbcSelectExecutorStandardImpl.java:443) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.executeQuery(JdbcSelectExecutorStandardImpl.java:166) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.sql.exec.internal.JdbcSelectExecutorStandardImpl.list(JdbcSelectExecutorStandardImpl.java:91) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.sql.exec.spi.JdbcSelectExecutor.list(JdbcSelectExecutor.java:31) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.loader.ast.internal.SingleIdLoadPlan.load(SingleIdLoadPlan.java:140) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.loader.ast.internal.SingleIdLoadPlan.load(SingleIdLoadPlan.java:110) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.loader.ast.internal.SingleIdEntityLoaderStandardImpl.load(SingleIdEntityLoaderStandardImpl.java:72) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.persister.entity.AbstractEntityPersister.doLoad(AbstractEntityPersister.java:4401) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4391) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:597) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:570) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:224) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:363) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:113) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:75) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:118) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.internal.SessionImpl.fireLoadNoChecks(SessionImpl.java:1244) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1232) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.loader.access.IdentifierLoadAccessImpl.doLoad(IdentifierLoadAccessImpl.java:195) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.loader.access.IdentifierLoadAccessImpl.lambda$load$1(IdentifierLoadAccessImpl.java:161) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.loader.access.IdentifierLoadAccessImpl.perform(IdentifierLoadAccessImpl.java:108) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.loader.access.IdentifierLoadAccessImpl.load(IdentifierLoadAccessImpl.java:161) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.internal.SessionImpl.find(SessionImpl.java:2336) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at org.hibernate.internal.SessionImpl.find(SessionImpl.java:2303) ~[hibernate-core-6.1.6.Final.jar:6.1.6.Final]
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:578) ~[na:na]
at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:360) ~[spring-orm-6.0.3.jar:6.0.3]
at jdk.proxy2/jdk.proxy2.$Proxy105.find(Unknown Source) ~[na:na]
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:578) ~[na:na]
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:307) ~[spring-orm-6.0.3.jar:6.0.3]
at jdk.proxy2/jdk.proxy2.$Proxy105.find(Unknown Source) ~[na:na]
at org.springframework.data.jpa.repository.support.SimpleJpaRepository.findById(SimpleJpaRepository.java:313) ~[spring-data-jpa-3.0.0.jar:3.0.0]
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:578) ~[na:na]
at org.springframework.data.repository.core.support.RepositoryMethodInvoker$RepositoryFragmentMethodInvoker.lambda$new$0(RepositoryMethodInvoker.java:288) ~[spring-data-commons-3.0.0.jar:3.0.0]
at org.springframework.data.repository.core.support.RepositoryMethodInvoker.doInvoke(RepositoryMethodInvoker.java:136) ~[spring-data-commons-3.0.0.jar:3.0.0]
at org.springframework.data.repository.core.support.RepositoryMethodInvoker.invoke(RepositoryMethodInvoker.java:120) ~[spring-data-commons-3.0.0.jar:3.0.0]
at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:516) ~[spring-data-commons-3.0.0.jar:3.0.0]
at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:285) ~[spring-data-commons-3.0.0.jar:3.0.0]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:628) ~[spring-data-commons-3.0.0.jar:3.0.0]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) ~[spring-aop-6.0.3.jar:6.0.3]
at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.doInvoke(QueryExecutorMethodInterceptor.java:168) ~[spring-data-commons-3.0.0.jar:3.0.0]
at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.invoke(QueryExecutorMethodInterceptor.java:143) ~[spring-data-commons-3.0.0.jar:3.0.0]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) ~[spring-aop-6.0.3.jar:6.0.3]
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) ~[spring-tx-6.0.3.jar:6.0.3]
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) ~[spring-tx-6.0.3.jar:6.0.3]
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) ~[spring-tx-6.0.3.jar:6.0.3]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) ~[spring-aop-6.0.3.jar:6.0.3]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137) ~[spring-tx-6.0.3.jar:6.0.3]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) ~[spring-aop-6.0.3.jar:6.0.3]
at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:163) ~[spring-data-jpa-3.0.0.jar:3.0.0]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) ~[spring-aop-6.0.3.jar:6.0.3]
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97) ~[spring-aop-6.0.3.jar:6.0.3]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) ~[spring-aop-6.0.3.jar:6.0.3]
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:218) ~[spring-aop-6.0.3.jar:6.0.3]
at jdk.proxy2/jdk.proxy2.$Proxy113.findById(Unknown Source) ~[na:na]
at com.hydrogarden.server.circuit.CircuitService.findById(CircuitService.java:19) ~[classes/:na]
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:578) ~[na:na]
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:343) ~[spring-aop-6.0.3.jar:6.0.3]
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:196) ~[spring-aop-6.0.3.jar:6.0.3]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-6.0.3.jar:6.0.3]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:752) ~[spring-aop-6.0.3.jar:6.0.3]
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) ~[spring-tx-6.0.3.jar:6.0.3]
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) ~[spring-tx-6.0.3.jar:6.0.3]
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) ~[spring-tx-6.0.3.jar:6.0.3]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:184) ~[spring-aop-6.0.3.jar:6.0.3]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:752) ~[spring-aop-6.0.3.jar:6.0.3]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:703) ~[spring-aop-6.0.3.jar:6.0.3]
at com.hydrogarden.server.circuit.CircuitService$$SpringCGLIB$$0.findById(<generated>) ~[classes/:na]
at com.hydrogarden.server.circuit.CircuitController.findById(CircuitController.java:25) ~[classes/:na]
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:578) ~[na:na]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:207) ~[spring-web-6.0.3.jar:6.0.3]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:152) ~[spring-web-6.0.3.jar:6.0.3]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117) ~[spring-webmvc-6.0.3.jar:6.0.3]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:884) ~[spring-webmvc-6.0.3.jar:6.0.3]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797) ~[spring-webmvc-6.0.3.jar:6.0.3]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-6.0.3.jar:6.0.3]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1080) ~[spring-webmvc-6.0.3.jar:6.0.3]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:973) ~[spring-webmvc-6.0.3.jar:6.0.3]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1010) ~[spring-webmvc-6.0.3.jar:6.0.3]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:902) ~[spring-webmvc-6.0.3.jar:6.0.3]
at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:705) ~[tomcat-embed-core-10.1.4.jar:6.0]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:884) ~[spring-webmvc-6.0.3.jar:6.0.3]
at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:814) ~[tomcat-embed-core-10.1.4.jar:6.0]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:223) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:158) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-10.1.4.jar:10.1.4]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:185) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:158) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-6.0.3.jar:6.0.3]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.0.3.jar:6.0.3]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:185) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:158) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-6.0.3.jar:6.0.3]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.0.3.jar:6.0.3]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:185) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:158) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-6.0.3.jar:6.0.3]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) ~[spring-web-6.0.3.jar:6.0.3]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:185) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:158) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:177) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:119) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:400) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:859) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1734) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-10.1.4.jar:10.1.4]
at java.base/java.lang.Thread.run(Thread.java:1589) ~[na:na]

数据库模式:

create table abstract_entity_seq (next_val bigint) engine=InnoDB;
insert into abstract_entity_seq values ( 1 );
create table circuit (id bigint not null, version bigint, code varchar(255), name varchar(255), user_id bigint, primary key (id)) engine=InnoDB;
create table circuit_schedule (id bigint not null, version bigint, enabled bit not null, end_date datetime(6), frequency_days integer not null, start_date datetime(6), watering_time integer not null, circuit_id bigint, user_id bigint, primary key (id)) engine=InnoDB;
create table generated_task (id bigint not null, version bigint, datetime datetime(6), done bit not null, mode varchar(255), circuit_id bigint, user_id bigint, primary key (id)) engine=InnoDB;
create table user (id bigint not null, version bigint, hash_password varchar(255), user_name varchar(255), primary key (id)) engine=InnoDB;
alter table circuit add constraint FKnh13qt8jj3hko6xfepfsl1yxy foreign key (user_id) references user (id);
alter table circuit_schedule add constraint FK34417y9ycakv6tauwtnljxlgn foreign key (circuit_id) references circuit (id);
alter table circuit_schedule add constraint FKwekisq529eqgfjcgpohwrkga foreign key (user_id) references user (id);
alter table generated_task add constraint FKby4l4rt6licxp3ohq81yraru3 foreign key (circuit_id) references circuit (id);
alter table generated_task add constraint FKn53xcwvd2dyerbjd00gm9kot5 foreign key (user_id) references user (id);

我已经检查了@ManyToOne关系，这就是我希望只有一个方向关系。

只是想分享一下我在这个问题上的经验，尽管它与这个特定的情况没有直接关系，但我希望它能帮助别人。

这个错误意味着hibernate可能正在处理类型和类型转换问题，如下所示:https://docs.jboss.org/hibernate/orm/3.2/api/org/hibernate/PropertyAccessException.html

通过反射或通过CGLIB访问持久类实例的属性发生问题。有许多可能的潜在原因，包括:

  • 安全检查失败
  • getter或setter方法内部发生的异常
  • 一个可空的数据库列被映射到一个基本类型的属性
  • Hibernate类型不能转换为属性类型(反之亦然)

在我的特殊情况下，我正在使用列属性转换器:

@Convert(converter = StringListConverter.class)
private ArrayList<String> notificationEmails;

，而转换器类的实现有一个List:

@Converter
public class StringListConverter implements AttributeConverter<List<String>, String> {
private static final String SPLIT_CHAR = ",";
@Override
public String convertToDatabaseColumn(List<String> stringList) {
return stringList != null ? String.join(SPLIT_CHAR, stringList) : null;
}
@Override
public List<String> convertToEntityAttribute(String string) {
return string != null ? Arrays.asList(string.split(SPLIT_CHAR)) : emptyList();
}
}

解决方法是用实现的ArrayList代替List接口来解决:

@Converter
public class StringListConverter implements AttributeConverter<ArrayList<String>, String> {
private static final String SPLIT_CHAR = ",";
@Override
public String convertToDatabaseColumn(ArrayList<String> stringList) {
return stringList != null ? String.join(SPLIT_CHAR, stringList) : null;
}
@Override
public ArrayList<String> convertToEntityAttribute(String string) {
return string != null ? new ArrayList<>(Arrays.asList(string.split(SPLIT_CHAR))) : new ArrayList<>();
}
}

我想你可能希望AbstractEntity成为@MappedSuperclass，而不是@Entity。

虽然，我不清楚如何确切地解释你的错误。

我在MySQL和H6.2上试过你的代码，它似乎工作得很好，所以有些事情你没有告诉我们。

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