I'm following a course, and instead of giving error 200, it gives Internal Server Error 500 in postman when i change the fixed user by this method in UserResource :
return ResponseEntity.ok().body(service.findById(id));
Errors after sending a GET /user/1 request in postman on terminal:
ERROR 19448 --- [nio-8080-exec-2] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.dao.InvalidDataAccessResourceUsageException: could not prepare statement; SQL [select user0_.id as id1_0_0_, user0_.email as email2_0_0_, user0_.name as name3_0_0_, user0_.password as password4_0_0_ from user user0_ where user0_.id=?]; nested exception is org.hibernate.exception.SQLGrammarException: could not prepare statement] with root cause
org.h2.jdbc.JdbcSQLSyntaxErrorException: Syntax error in SQL statement "select user0_.id as id1_0_0_, user0_.email as email2_0_0_, user0_.name as name3_0_0_, user0_.password as password4_0_0_ from [*]user user0_ where user0_.id=?"; expected "identifier"; SQL statement:
select user0_.id as id1_0_0_, user0_.email as email2_0_0_, user0_.name as name3_0_0_, user0_.password as password4_0_0_ from user user0_ where user0_.id=? [42001-214]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:502) ~[h2-2.1.214.jar:2.1.214]
at org.h2.message.DbException.getJdbcSQLException(DbException.java:477) ~[h2-2.1.214.jar:2.1.214]
at org.h2.message.DbException.getSyntaxError(DbException.java:261) ~[h2-2.1.214.jar:2.1.214]
at org.h2.command.Parser.readIdentifier(Parser.java:5656) ~[h2-2.1.214.jar:2.1.214]
at org.h2.command.Parser.readTablePrimary(Parser.java:1814) ~[h2-2.1.214.jar:2.1.214]
at org.h2.command.Parser.readTableReference(Parser.java:2334) ~[h2-2.1.214.jar:2.1.214]
at org.h2.command.Parser.parseSelectFromPart(Parser.java:2772) ~[h2-2.1.214.jar:2.1.214]
at org.h2.command.Parser.parseSelect(Parser.java:2878) ~[h2-2.1.214.jar:2.1.214]
at org.h2.command.Parser.parseQueryPrimary(Parser.java:2762) ~[h2-2.1.214.jar:2.1.214]
at org.h2.command.Parser.parseQueryTerm(Parser.java:2633) ~[h2-2.1.214.jar:2.1.214]
at org.h2.command.Parser.parseQueryExpressionBody(Parser.java:2612) ~[h2-2.1.214.jar:2.1.214]
at org.h2.command.Parser.parseQueryExpressionBodyAndEndOfQuery(Parser.java:2605) ~[h2-2.1.214.jar:2.1.214]
at org.h2.command.Parser.parseQueryExpression(Parser.java:2598) ~[h2-2.1.214.jar:2.1.214]
at org.h2.command.Parser.parseQuery(Parser.java:2567) ~[h2-2.1.214.jar:2.1.214]
at org.h2.command.Parser.parsePrepared(Parser.java:724) ~[h2-2.1.214.jar:2.1.214]
at org.h2.command.Parser.parse(Parser.java:689) ~[h2-2.1.214.jar:2.1.214]
at org.h2.command.Parser.parse(Parser.java:661) ~[h2-2.1.214.jar:2.1.214]
at org.h2.command.Parser.prepareCommand(Parser.java:569) ~[h2-2.1.214.jar:2.1.214]
at org.h2.engine.SessionLocal.prepareLocal(SessionLocal.java:631) ~[h2-2.1.214.jar:2.1.214]
at org.h2.engine.SessionLocal.prepareCommand(SessionLocal.java:554) ~[h2-2.1.214.jar:2.1.214]
at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1116) ~[h2-2.1.214.jar:2.1.214]
at org.h2.jdbc.JdbcPreparedStatement.<init>(JdbcPreparedStatement.java:92) ~[h2-2.1.214.jar:2.1.214]
at org.h2.jdbc.JdbcConnection.prepareStatement(JdbcConnection.java:288) ~[h2-2.1.214.jar:2.1.214]
at com.zaxxer.hikari.pool.ProxyConnection.prepareStatement(ProxyConnection.java:337) ~[HikariCP-4.0.3.jar:na]
at com.zaxxer.hikari.pool.HikariProxyConnection.prepareStatement(HikariProxyConnection.java) ~[HikariCP-4.0.3.jar:na]
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$5.doPrepare(StatementPreparerImpl.java:149) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:176) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareQueryStatement(StatementPreparerImpl.java:151) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.prepareQueryStatement(AbstractLoadPlanBasedLoader.java:198) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeQueryStatement(AbstractLoadPlanBasedLoader.java:162) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader.executeLoad(AbstractLoadPlanBasedLoader.java:104) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load(AbstractLoadPlanBasedEntityLoader.java:285) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.persister.entity.AbstractEntityPersister.doLoad(AbstractEntityPersister.java:4521) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4511) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:571) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:539) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:208) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:327) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:108) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:74) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:118) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.internal.SessionImpl.fireLoadNoChecks(SessionImpl.java:1231) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1220) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.internal.SessionImpl.access$2100(SessionImpl.java:202) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.doLoad(SessionImpl.java:2835) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.lambda$load$1(SessionImpl.java:2812) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.perform(SessionImpl.java:2768) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl.load(SessionImpl.java:2812) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.internal.SessionImpl.find(SessionImpl.java:3400) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at org.hibernate.internal.SessionImpl.find(SessionImpl.java:3367) ~[hibernate-core-5.6.10.Final.jar:5.6.10.Final]
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:577) ~[na:na]
at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:362) ~[spring-orm-5.3.22.jar:5.3.22]
at jdk.proxy2/jdk.proxy2.$Proxy95.find(Unknown Source) ~[na:na]
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:577) ~[na:na]
at org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:311) ~[spring-orm-5.3.22.jar:5.3.22]
at jdk.proxy2/jdk.proxy2.$Proxy95.find(Unknown Source) ~[na:na]
at org.springframework.data.jpa.repository.support.SimpleJpaRepository.findById(SimpleJpaRepository.java:335) ~[spring-data-jpa-2.7.2.jar:2.7.2]
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:577) ~[na:na]
at org.springframework.data.repository.core.support.RepositoryMethodInvoker$RepositoryFragmentMethodInvoker.lambda$new$0(RepositoryMethodInvoker.java:289) ~[spring-data-commons-2.7.2.jar:2.7.2]
at org.springframework.data.repository.core.support.RepositoryMethodInvoker.doInvoke(RepositoryMethodInvoker.java:137) ~[spring-data-commons-2.7.2.jar:2.7.2]
at org.springframework.data.repository.core.support.RepositoryMethodInvoker.invoke(RepositoryMethodInvoker.java:121) ~[spring-data-commons-2.7.2.jar:2.7.2]
at org.springframework.data.repository.core.support.RepositoryComposition$RepositoryFragments.invoke(RepositoryComposition.java:530) ~[spring-data-commons-2.7.2.jar:2.7.2]
at org.springframework.data.repository.core.support.RepositoryComposition.invoke(RepositoryComposition.java:286) ~[spring-data-commons-2.7.2.jar:2.7.2]
at org.springframework.data.repository.core.support.RepositoryFactorySupport$ImplementationMethodExecutionInterceptor.invoke(RepositoryFactorySupport.java:640) ~[spring-data-commons-2.7.2.jar:2.7.2]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.22.jar:5.3.22]
at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.doInvoke(QueryExecutorMethodInterceptor.java:164) ~[spring-data-commons-2.7.2.jar:2.7.2]
at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.invoke(QueryExecutorMethodInterceptor.java:139) ~[spring-data-commons-2.7.2.jar:2.7.2]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.22.jar:5.3.22]
at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:81) ~[spring-data-commons-2.7.2.jar:2.7.2]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.22.jar:5.3.22]
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) ~[spring-tx-5.3.22.jar:5.3.22]
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) ~[spring-tx-5.3.22.jar:5.3.22]
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) ~[spring-tx-5.3.22.jar:5.3.22]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.22.jar:5.3.22]
at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137) ~[spring-tx-5.3.22.jar:5.3.22]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.22.jar:5.3.22]
at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:174) ~[spring-data-jpa-2.7.2.jar:2.7.2]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.22.jar:5.3.22]
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97) ~[spring-aop-5.3.22.jar:5.3.22]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.22.jar:5.3.22]
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215) ~[spring-aop-5.3.22.jar:5.3.22]
at jdk.proxy2/jdk.proxy2.$Proxy98.findById(Unknown Source) ~[na:na]
at com.example.api.services.impl.UserServiceImpl.findById(UserServiceImpl.java:19) ~[classes/:na]
at com.example.api.resources.UserResource.findById(UserResource.java:23) ~[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:577) ~[na:na]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:205) ~[spring-web-5.3.22.jar:5.3.22]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:150) ~[spring-web-5.3.22.jar:5.3.22]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117) ~[spring-webmvc-5.3.22.jar:5.3.22]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.3.22.jar:5.3.22]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) ~[spring-webmvc-5.3.22.jar:5.3.22]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.3.22.jar:5.3.22]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1070) ~[spring-webmvc-5.3.22.jar:5.3.22]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) ~[spring-webmvc-5.3.22.jar:5.3.22]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.22.jar:5.3.22]
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.22.jar:5.3.22]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:655) ~[tomcat-embed-core-9.0.65.jar:4.0.FR]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.22.jar:5.3.22]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.65.jar:4.0.FR]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.65.jar:9.0.65]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.22.jar:5.3.22]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.22.jar:5.3.22]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.22.jar:5.3.22]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.22.jar:5.3.22]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.22.jar:5.3.22]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.22.jar:5.3.22]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1789) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.65.jar:9.0.65]
at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]
Hibernate: select user0_.id as id1_0_0_, user0_.email as email2_0_0_, user0_.name as name3_0_0_, user0_.password as password4_0_0_ from user user0_ where user0_.id=?
2022-08-07 16:36:23.499 WARN 19448 --- [nio-8080-exec-4] o.h.engine.jdbc.spi.SqlExceptionHelper : SQL Error: 42001, SQLState: 42001
2022-08-07 16:36:23.500 ERROR 19448 --- [nio-8080-exec-4] o.h.engine.jdbc.spi.SqlExceptionHelper : Syntax error in SQL statement "select user0_.id as id1_0_0_, user0_.email as email2_0_0_, user0_.name as name3_0_0_, user0_.password as password4_0_0_ from [*]user user0_ where user0_.id=?"; expected "identifier"; SQL statement:
select user0_.id as id1_0_0_, user0_.email as email2_0_0_, user0_.name as name3_0_0_, user0_.password as password4_0_0_ from user user0_ where user0_.id=? [42001-214]
2022-08-07 16:36:23.500 INFO 19448 --- [nio-8080-exec-4] o.h.e.internal.DefaultLoadEventListener : HHH000327: Error performing load command
User:
package com.example.api.domain;
import lombok.*;
import javax.persistence.*;
@Data
@AllArgsConstructor
@NoArgsConstructor
@Entity
public class User {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Integer id;
private String name;
@Column(unique = true)
private String email;
private String password;
}
UserRepository:
package com.example.api.repositories;
import com.example.api.domain.User;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;
@Repository
public interface UserRepository extends JpaRepository<User, Integer> {
}
UserResource:
package com.example.api.resources;
import com.example.api.domain.User;
import com.example.api.services.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RequestMapping(value = "/user")
public class UserResource {
@Autowired
private UserService service;
@GetMapping(value = "/{id}")
public ResponseEntity<User> findById(@PathVariable Integer id) {
return ResponseEntity.ok().body(service.findById(id));
//return ResponseEntity.ok().body(new User(1, "Test", "[email protected]", "123")) Only works this way;
//User obj = this.service.findById(id);
//return ResponseEntity.ok().body(obj);
}
}
UserServiceImpl:
package com.example.api.services.impl;
import com.example.api.domain.User;
import com.example.api.repositories.UserRepository;
import com.example.api.services.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.Optional;
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserRepository repository;
@Override
public User findById(Integer id) {
Optional<User> obj = repository.findById(id);
return obj.orElse(null);
}
}
UserService:
package com.example.api.services;
import com.example.api.domain.User;
public interface UserService {
User findById(Integer id);
}
CodePudding user response：
If you look in your error message you can see that there is a little asterisk [*] in it. This asterisk marks out where your syntax error is.
Syntax error in SQL statement
"select user0_.id as id1_0_0_,
user0_.email as email2_0_0_,
user0_.name as name3_0_0_,
user0_.password as password4_0_0_
from
[*]user user0_ where user0_.id=?";
^
Here
expected "identifier"; SQL statement:
This gives you a hint. Why can't i select from the table User? You haven't disclosed explicitly what database you are using but User is quite a common name.
I can guess from the logs that you are using H2 and they have a complete list of reserved keywords that you are not allowed to use and on that list you can find the name User.
So your solution is to probably rename your table to maybe Users?