org.postgresql.util.PSQLException：错误：关系“用户”不存在 - SpringBoot、Hibernate、Postgresql答案

【问题标题】：org.postgresql.util.PSQLException: ERROR: relation "users" does not exist - SpringBoot, Hibernate, Postgresqlorg.postgresql.util.PSQLException：错误：关系“用户”不存在 - SpringBoot、Hibernate、Postgresql
【发布时间】：2023-04-01 11:44:01
【问题描述】：

我正在使用带有 Hibernate、JPA 和 Postgresql 数据库的 Spring Boot。我正在尝试创建新用户并保存它。我有以下代码：

UserEntity.java

@NoArgsConstructor
@AllArgsConstructor
@ToString
@Getter
@Setter
@Entity(name = "Users")
public class UserEntity{

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private long id;

    @Column(nullable = false, unique = true)
    private String userId;
    @Column(nullable = false, length = 50)
    private String firstName;
    @Column(nullable = false, length = 50)
    private String lastName;
    @Column(nullable = false, length = 120, unique = true)
    private String email;
    @Column(nullable = false, unique = true)
    private String encryptedPassword;
}

UserController.java

@RestController
@RequestMapping("/users")
public class UserController {

    @Autowired
    UserService userService;

    private static final ModelMapper modelMapper = new ModelMapper();

    @PostMapping
    public ResponseEntity<CreateUserResponseModel> createUser(@Valid @RequestBody CreateUserRequestModel userDetails){

        modelMapper.getConfiguration().setMatchingStrategy(MatchingStrategies.STRICT);
        UserDto userDto = modelMapper.map(userDetails, UserDto.class);
        UserDto createdUser = userService.createUser(userDto);

        CreateUserResponseModel returnValue = modelMapper.map(createdUser, CreateUserResponseModel.class);
        return ResponseEntity.status(HttpStatus.CREATED).body(returnValue);
    }

}

UserServiceImpl.java

@Service
public class UserServiceImpl implements UserService{

    private final UserRepository userRepository;

    @Autowired
    public UserServiceImpl(UserRepository userRepository) {
        this.userRepository = userRepository;
    }

    private static final ModelMapper modelMapper = new ModelMapper();

    @Override
    @Transactional
    public UserDto createUser(UserDto user) {

        user.setUserId(UUID.randomUUID().toString());
        modelMapper.getConfiguration().setMatchingStrategy(MatchingStrategies.STRICT);
        UserEntity userEntity = modelMapper.map(user, UserEntity.class);
        userEntity.setEncryptedPassword("test");
        userRepository.save(userEntity);

        UserDto returnValue = modelMapper.map(userEntity, UserDto.class);

        return returnValue;
    }
}

UserRepository.java

public interface UserRepository extends CrudRepository<UserEntity, Long> {

}

Application.yaml

server:
  port: 8080

spring:
  datasource:
    url: jdbc:postgresql://localhost:5432/userservices
    username: postgres
    password: user
    jpa:
      show-sql: true
      hibernate:
        ddl-auto: update
      properties:
        hibernate:
          dialect: org.hibernate.dialect.PostgreSQL81Dialect
          format_sql: true
  jackson:
    serialization:
      fail-on-empty-beans: false
logging:
  level:
    org:
      springframework: info

我在 Intelij 中的错误如下所示：

org.postgresql.util.PSQLException: ERROR: relation "users" does not exist
  Position: 13
    at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2553) ~[postgresql-42.2.20.jar:42.2.20]
    at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2285) ~[postgresql-42.2.20.jar:42.2.20]
    at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:323) ~[postgresql-42.2.20.jar:42.2.20]
    at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:481) ~[postgresql-42.2.20.jar:42.2.20]
    at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:401) ~[postgresql-42.2.20.jar:42.2.20]
    at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:164) ~[postgresql-42.2.20.jar:42.2.20]
    at org.postgresql.jdbc.PgPreparedStatement.executeUpdate(PgPreparedStatement.java:130) ~[postgresql-42.2.20.jar:42.2.20]
    at com.zaxxer.hikari.pool.ProxyPreparedStatement.executeUpdate(ProxyPreparedStatement.java:61) ~[HikariCP-4.0.3.jar:na]
    at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeUpdate(HikariProxyPreparedStatement.java) ~[HikariCP-4.0.3.jar:na]
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:197) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.dialect.identity.GetGeneratedKeysDelegate.executeAndExtract(GetGeneratedKeysDelegate.java:57) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(AbstractReturningDelegate.java:43) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3195) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3801) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.action.internal.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:84) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.engine.spi.ActionQueue.execute(ActionQueue.java:645) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.engine.spi.ActionQueue.addResolvedEntityInsertAction(ActionQueue.java:282) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.engine.spi.ActionQueue.addInsertAction(ActionQueue.java:263) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:317) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.addInsertAction(AbstractSaveEventListener.java:330) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:287) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:193) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.event.internal.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:123) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.entityIsTransient(DefaultPersistEventListener.java:185) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:128) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.event.internal.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:55) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:93) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.internal.SessionImpl.firePersist(SessionImpl.java:720) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at org.hibernate.internal.SessionImpl.persist(SessionImpl.java:706) ~[hibernate-core-5.4.31.Final.jar:5.4.31.Final]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) ~[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:567) ~[na:na]
    at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:362) ~[spring-orm-5.3.7.jar:5.3.7]
    at jdk.proxy3/jdk.proxy3.$Proxy96.persist(Unknown Source) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) ~[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:567) ~[na:na]
    at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:311) ~[spring-orm-5.3.7.jar:5.3.7]
    at jdk.proxy3/jdk.proxy3.$Proxy96.persist(Unknown Source) ~[na:na]
    at org.springframework.data.jpa.repository.support.SimpleJpaRepository.save(SimpleJpaRepository.java:597) ~[spring-data-jpa-2.5.1.jar:2.5.1]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) ~[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:567) ~[na:na]
    at org.springframework.data.repository.core.support.RepositoryMethodInvoker$RepositoryFragmentMethodInvoker.lambda$new$0(RepositoryMethodInvoker.java:289) ~[spring-data-commons-2.5.1.jar:2.5.1]
    at org.springframework.data.repository.core.support.RepositoryMethodInvoker.doInvoke(RepositoryMethodInvoker.java:137) ~[spring-data-commons-2.5.1.jar:2.5.1]
    at org.springframework.data.repository.core.support.RepositoryMethodInvoker.invoke(RepositoryMethodInvoker.java:121) ~[spring-data-commons-2.5.1.jar:2.5.1]
    at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:529) ~[spring-data-commons-2.5.1.jar:2.5.1]
    at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:285) ~[spring-data-commons-2.5.1.jar:2.5.1]
    at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:599) ~[spring-data-commons-2.5.1.jar:2.5.1]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.7.jar:5.3.7]
    at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.doInvoke(QueryExecutorMethodInterceptor.java:163) ~[spring-data-commons-2.5.1.jar:2.5.1]
    at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.invoke(QueryExecutorMethodInterceptor.java:138) ~[spring-data-commons-2.5.1.jar:2.5.1]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.7.jar:5.3.7]
    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) ~[spring-tx-5.3.7.jar:5.3.7]
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) ~[spring-tx-5.3.7.jar:5.3.7]
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) ~[spring-tx-5.3.7.jar:5.3.7]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.7.jar:5.3.7]
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137) ~[spring-tx-5.3.7.jar:5.3.7]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.7.jar:5.3.7]
    at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:174) ~[spring-data-jpa-2.5.1.jar:2.5.1]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.7.jar:5.3.7]
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97) ~[spring-aop-5.3.7.jar:5.3.7]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.7.jar:5.3.7]
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215) ~[spring-aop-5.3.7.jar:5.3.7]
    at jdk.proxy3/jdk.proxy3.$Proxy99.save(Unknown Source) ~[na:na]
    at com.example.usermicroservice.service.UserServiceImpl.createUser(UserServiceImpl.java:34) ~[classes/:na]
    at com.example.usermicroservice.service.UserServiceImpl$$FastClassBySpringCGLIB$$a58b43f0.invoke(<generated>) ~[classes/:na]
    at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.3.7.jar:5.3.7]
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:779) ~[spring-aop-5.3.7.jar:5.3.7]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.3.7.jar:5.3.7]
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750) ~[spring-aop-5.3.7.jar:5.3.7]
    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) ~[spring-tx-5.3.7.jar:5.3.7]
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) ~[spring-tx-5.3.7.jar:5.3.7]
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) ~[spring-tx-5.3.7.jar:5.3.7]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.7.jar:5.3.7]
    at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:750) ~[spring-aop-5.3.7.jar:5.3.7]
    at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:692) ~[spring-aop-5.3.7.jar:5.3.7]
    at com.example.usermicroservice.service.UserServiceImpl$$EnhancerBySpringCGLIB$$df5a5f72.createUser(<generated>) ~[classes/:na]
    at com.example.usermicroservice.controller.UserController.createUser(UserController.java:39) ~[classes/:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) ~[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:567) ~[na:na]
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:197) ~[spring-web-5.3.7.jar:5.3.7]
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:141) ~[spring-web-5.3.7.jar:5.3.7]
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106) ~[spring-webmvc-5.3.7.jar:5.3.7]
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:894) ~[spring-webmvc-5.3.7.jar:5.3.7]
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) ~[spring-webmvc-5.3.7.jar:5.3.7]
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.3.7.jar:5.3.7]
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1063) ~[spring-webmvc-5.3.7.jar:5.3.7]
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) ~[spring-webmvc-5.3.7.jar:5.3.7]
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.7.jar:5.3.7]
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.3.7.jar:5.3.7]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:652) ~[tomcat-embed-core-9.0.46.jar:4.0.FR]
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.7.jar:5.3.7]
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) ~[tomcat-embed-core-9.0.46.jar:4.0.FR]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.46.jar:9.0.46]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.7.jar:5.3.7]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.7.jar:5.3.7]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.7.jar:5.3.7]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.7.jar:5.3.7]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.7.jar:5.3.7]
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.7.jar:5.3.7]
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1707) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) ~[na:na]
    at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) ~[na:na]
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.46.jar:9.0.46]
    at java.base/java.lang.Thread.run(Thread.java:831) ~[na:na]

我正在使用 Postman 对其进行测试，并像这样在正文中发送 JSON：

{
    "firstName": "Anna",
    "lastName": "Faranhay",
    "email": "Faranhay@gmail.com",
    "password": "ana1234"
}

但在 Postman 中，我收到 500 内部错误。

任何建议表示赞赏。

【问题讨论】：

预期会出现 Postman 的 500 错误。 Spring Boot 正在捕获异常并使用它来返回错误页面。在这种情况下，500 确实发生了内部错误。你还没有分享你的 UserRepository 类，但是你似乎有不一致的命名（用户和用户），所以我会检查我的 Postgres 实例，看看究竟有哪些表可用。
UserRepository 类在我的代码中。不明白哪里命名不一致？
哦，抱歉，错过了 :)。他们让我写代码！不过，我的一般性评论是，当您的应用程序启动时，请检查 JPA 正在创建哪些表。您的存储库和实体类使用“用户”，您的实体注释使用“用户”
当我开始代码时没有创建任何表，这很奇怪..但我可以抓住我错过的东西。但是我认为注解名称并不取决于代码中使用的名称，对吧？！
您似乎有另一个实体，将 UserEntity 作为相关实体，并且确实出了点问题

标签： java postgresql spring-boot hibernate

【解决方案1】：

对于 PostgreSQL，您需要使用 GenerationType.SEQUENCE 而不是 GenerationType.IDENTITY。

然后：

@NoArgsConstructor
@AllArgsConstructor
@ToString
@Getter
@Setter
@Table(name = "Users")
@Entity
public class UserEntity {

    @Id
    @GeneratedValue(strategy = GenerationType.SEQUENCE)
    private long id;

    @Column(nullable = false, unique = true)
    private String userId;
    @Column(nullable = false, length = 50)
    private String firstName;
    @Column(nullable = false, length = 50)
    private String lastName;
    @Column(nullable = false, length = 120, unique = true)
    private String email;
    @Column(nullable = false, unique = true)
    private String encryptedPassword;
}

【讨论】：

我收到了同样的错误。我之前也尝试过，但没有帮助。
抱歉，我没有看到“hibernate.ddl-auto:update”属性。尝试更改 SEQUENCE 生成策略并告诉我结果。谢谢
我已经尝试过了，我收到以下错误1) Converter org.modelmapper.internal.converter.NumberConverter@682f987f failed to convert java.lang.String to java.lang.Long. 1 error] with root cause java.lang.NumberFormatException: For input string: "dd57afcd-386b-44f6-92ca-76e2749eb8a9"
是的，这是另一个错误。我将从 github 中提取您的代码并尝试解决它。我在 github 上的 github 存储库中创建了一个关于最后一个问题（序列生成器）的拉取请求。
您好朋友，谢谢您的回答。我确实为我的 ID 添加了@Entity(name = "Users") 和@GeneratedValue(strategy = GenerationType.SEQUENCE)，它工作得很好。我在application.yaml 中修复了一个小错误，因为我的代码格式不正确。现在一切正常！