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使用 Spring 数据 Jpa 将实体保存到数据库时出错

[英]Error while saving entities into the database using Spring Data Jpa

 原文  2021-12-27 21:08:08  6   1    java/ spring/ spring-boot/ jpa

问题描述

我创建了一个实体 class ( User.java ) 和存储库接口 ( UserRepository.java )。 如果我运行我的应用程序，一切都会好起来的（将创建项目表）。 然后我添加DBInit class 与run()方法和userRepository.saveAll(users); 产生错误。 我只是尝试使用 Spring 数据 Jpa 创建 3 个用户并将它们添加到数据库中。 那么为什么我有一个错误以及如何摆脱它呢？ DBInit.run()方法产生错误 User.java

import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.Setter;
import javax.persistence.*;

@Entity
@NoArgsConstructor
public class User
{
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Getter
    @Setter
    private int id;
    
    @Getter
    @Setter
    @Column(nullable = false)
    private String name;
    
    @Getter
    @Setter
    private String surname;
    
    @Getter
    @Setter
    @Column(nullable = false)
    private String password;
    
    @Getter
    @Setter
    @Column(name = "telephone_number", nullable = false)
    private String telephoneNumber;
    
    @Getter
    @Setter
    @Column(unique = true)
    private String email;
    
    @Getter
    @Setter
    private String country;
    
    @Getter
    @Setter
    private String address;
    
    @Getter
    @Setter
    // delimiter = ";"
    private String roleNames;
    
    public User(String name, String surname, String password, String telephoneNumber, String email, String country, String address, String roleNames)
    {
        this.name = name;
        this.surname = surname;
        this.password = password;
        this.telephoneNumber = telephoneNumber;
        this.email = email;
        this.country = country;
        this.address = address;
        this.roleNames = roleNames;
    }
}

UserRepository.java

import Onlinestore.entity.User;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface UserRepository extends JpaRepository<User, Integer>
{
    User findUserByEmail(String email);
}

DBInit.java

import Onlinestore.entity.User;
import Onlinestore.repository.UserRepository;
import org.springframework.boot.CommandLineRunner;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Service;
import java.util.Arrays;
import java.util.List;

@Service
public class DBInit implements CommandLineRunner
{
    private UserRepository userRepository;
    private PasswordEncoder passwordEncoder;
    
    public DBInit(UserRepository userRepository, PasswordEncoder passwordEncoder)
    {
        this.userRepository = userRepository;
        this.passwordEncoder = passwordEncoder;
    }
    
    @Override
    public void run(String[] args)
    {
        User user1 = new User("name1", "surname1", passwordEncoder.encode("pass1"),
                "+111111111", "email1", "country1", "address1", "USER");

        User user2 = new User("name2", "surname2" + "", passwordEncoder.encode("pass2"),
                "+111111111", "email2", "country2", "address2", "USER");

        User user3 = new User("admin", "admin", passwordEncoder.encode("admin123"),
                "123", "123", "123", "132", "ADMIN");

        List<User> users = Arrays.asList(user1, user2, user3);

        userRepository.saveAll(users);
    }
}

应用程序属性

server.port=8080
spring.datasource.url=jdbc:postgresql://localhost:5432/online_store
spring.datasource.username=postgres
spring.datasource.password=123
spring.jpa.generate-ddl=true
spring.jpa.hibernate.ddl-auto=create
spring.jpa.show-sql=true
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.PostgreSQLDialect
spring.jpa.properties.hibernate.format_sql=true

控制台 output：

Hibernate: 
    select
        nextval ('hibernate_sequence')
Hibernate: 
    select
        nextval ('hibernate_sequence')
Hibernate: 
    select
        nextval ('hibernate_sequence')
Hibernate: 
    insert 
    into
        user
        (address, country, email, name, password, role_names, surname, telephone_number, id) 
    values
        (?, ?, ?, ?, ?, ?, ?, ?, ?)
2021-12-27 22:59:29.145  WARN 7952 --- [           main] o.h.engine.jdbc.spi.SqlExceptionHelper   : SQL Error: 0, SQLState: 42601
2021-12-27 22:59:29.145 ERROR 7952 --- [           main] o.h.engine.jdbc.spi.SqlExceptionHelper   : Error: syntax error (approximate position: "user")
  Position: 13
2021-12-27 22:59:29.145  INFO 7952 --- [           main] o.h.e.j.b.internal.AbstractBatchImpl     : HHH000010: On release of batch it still contained JDBC statements
2021-12-27 22:59:29.145  INFO 7952 --- [           main] ConditionEvaluationReportLoggingListener : 

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2021-12-27 22:59:29.161 ERROR 7952 --- [           main] o.s.boot.SpringApplication               : Application run failed

java.lang.IllegalStateException: Failed to execute CommandLineRunner
    at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:770) ~[spring-boot-2.6.0.jar:2.6.0]
    at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:751) ~[spring-boot-2.6.0.jar:2.6.0]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:309) ~[spring-boot-2.6.0.jar:2.6.0]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301) ~[spring-boot-2.6.0.jar:2.6.0]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1290) ~[spring-boot-2.6.0.jar:2.6.0]
    at Onlinestore.BootSecurityApplication.main(BootSecurityApplication.java:12) ~[classes/:na]
Caused by: org.springframework.dao.InvalidDataAccessResourceUsageException: could not execute statement; SQL [n/a]; nested exception is org.hibernate.exception.SQLGrammarException: could not execute statement
    at org.springframework.orm.jpa.vendor.HibernateJpaDialect.convertHibernateAccessException(HibernateJpaDialect.java:259) ~[spring-orm-5.3.13.jar:5.3.13]
    at org.springframework.orm.jpa.vendor.HibernateJpaDialect.translateExceptionIfPossible(HibernateJpaDialect.java:233) ~[spring-orm-5.3.13.jar:5.3.13]
    at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:566) ~[spring-orm-5.3.13.jar:5.3.13]
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:743) ~[spring-tx-5.3.13.jar:5.3.13]
    at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:711) ~[spring-tx-5.3.13.jar:5.3.13]
    at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:654) ~[spring-tx-5.3.13.jar:5.3.13]
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:407) ~[spring-tx-5.3.13.jar:5.3.13]
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) ~[spring-tx-5.3.13.jar:5.3.13]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.13.jar:5.3.13]
    at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137) ~[spring-tx-5.3.13.jar:5.3.13]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.13.jar:5.3.13]
    at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:174) ~[spring-data-jpa-2.6.0.jar:2.6.0]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.13.jar:5.3.13]
    at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97) ~[spring-aop-5.3.13.jar:5.3.13]
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.13.jar:5.3.13]
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215) ~[spring-aop-5.3.13.jar:5.3.13]
    at jdk.proxy2/jdk.proxy2.$Proxy94.saveAll(Unknown Source) ~[na:na]
    at Onlinestore.service.DBInit.run(DBInit.java:37) ~[classes/:na]
    at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:767) ~[spring-boot-2.6.0.jar:2.6.0]
    ... 5 common frames omitted
Caused by: org.hibernate.exception.SQLGrammarException: could not execute statement
    at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:103) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:37) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:113) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:99) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.executeUpdate(ResultSetReturnImpl.java:200) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.engine.jdbc.batch.internal.NonBatchingBatch.addToBatch(NonBatchingBatch.java:46) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3375) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:3908) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.action.internal.EntityInsertAction.execute(EntityInsertAction.java:107) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:604) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.engine.spi.ActionQueue.lambda$executeActions$1(ActionQueue.java:478) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at java.base/java.util.LinkedHashMap.forEach(LinkedHashMap.java:721) ~[na:na]
    at org.hibernate.engine.spi.ActionQueue.executeActions(ActionQueue.java:475) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.event.internal.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:344) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.event.internal.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:40) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.event.service.internal.EventListenerGroupImpl.fireEventOnEachListener(EventListenerGroupImpl.java:107) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.internal.SessionImpl.doFlush(SessionImpl.java:1402) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.internal.SessionImpl.managedFlush(SessionImpl.java:493) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.internal.SessionImpl.flushBeforeTransactionCompletion(SessionImpl.java:3285) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.internal.SessionImpl.beforeTransactionCompletion(SessionImpl.java:2420) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.engine.jdbc.internal.JdbcCoordinatorImpl.beforeTransactionCompletion(JdbcCoordinatorImpl.java:449) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.beforeCompletionCallback(JdbcResourceLocalTransactionCoordinatorImpl.java:183) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl.access$300(JdbcResourceLocalTransactionCoordinatorImpl.java:40) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.resource.transaction.backend.jdbc.internal.JdbcResourceLocalTransactionCoordinatorImpl$TransactionDriverControlImpl.commit(JdbcResourceLocalTransactionCoordinatorImpl.java:281) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.hibernate.engine.transaction.internal.TransactionImpl.commit(TransactionImpl.java:101) ~[hibernate-core-5.6.3.Final.jar:5.6.3.Final]
    at org.springframework.orm.jpa.JpaTransactionManager.doCommit(JpaTransactionManager.java:562) ~[spring-orm-5.3.13.jar:5.3.13]
    ... 21 common frames omitted
Caused by: org.postgresql.util.PSQLException: Error: syntax error (approximate position: "user")
  Position: 13
    at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2674) ~[postgresql-42.3.1.jar:42.3.1]
    at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2364) ~[postgresql-42.3.1.jar:42.3.1]
    at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:354) ~[postgresql-42.3.1.jar:42.3.1]
    at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:484) ~[postgresql-42.3.1.jar:42.3.1]
    at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:404) ~[postgresql-42.3.1.jar:42.3.1]
    at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:162) ~[postgresql-42.3.1.jar:42.3.1]
    at org.postgresql.jdbc.PgPreparedStatement.executeUpdate(PgPreparedStatement.java:130) ~[postgresql-42.3.1.jar:42.3.1]
    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-5.6.3.Final.jar:5.6.3.Final]
    ... 42 common frames omitted

2021-12-27 22:59:29.192  INFO 7952 --- [           main] j.LocalContainerEntityManagerFactoryBean : Closing JPA EntityManagerFactory for persistence unit 'default'
2021-12-27 22:59:29.192  INFO 7952 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown initiated...
2021-12-27 22:59:29.192  INFO 7952 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Shutdown completed.

1 个解决方案

解决方案1
 1 已采纳  2021-12-28 12:30:46

默认情况下，从您的@Entity创建的表的名称成为您的实体名称 class 小写字母，在这种情况下为“用户”，这恰好是保留的，您将无法使用那个名字。

您可以通过使用@Table(name = "otherName")注释您的实体并为其提供您选择的另一个名称来覆盖要创建的结果表的（默认）名称。

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