我尝试了很多JPA多对多的例子，但没有一个有效，这就是我必须使用连接表来实现多对多模型：
它运行在 3.0.9 spring boot 框架上
构建.gradle
plugins {
id 'java'
id 'war'
id 'org.springframework.boot' version '3.0.9'
id 'io.spring.dependency-management' version '1.1.2'
}
group = 'com.zousysko'
version = '1.0-SNAPSHOT'
repositories {
mavenCentral()
}
dependencies {
implementation 'org.springframework.boot:spring-boot-starter-web'
implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
implementation 'com.mysql:mysql-connector-j'
compileOnly 'org.projectlombok:lombok:1.18.28'
annotationProcessor 'org.projectlombok:lombok:1.18.28'
runtimeOnly 'org.springframework.boot:spring-boot-starter-tomcat'
}
test {
useJUnitPlatform()
}
ext {
set('springCloudVersion', "2022.0.3")
}
dependencyManagement {
imports {
mavenBom "org.springframework.cloud:spring-cloud-dependencies:${springCloudVersion}"
}
}
springBoot {
buildInfo()
}
电影.java
@Table(name = "movies")
@Entity
@Setter
@Getter
@Builder
@NoArgsConstructor
@AllArgsConstructor
public class Movie {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(nullable = false)
private Integer id;
@Column(nullable = false, length = 150)
private String name;
@Lob
private String description;
@Column(nullable = false)
private Integer releaseDate;
@ManyToMany(mappedBy = "movies")
private Set<User> users = new HashSet<>();
}
用户.java
@Table(name = "users")
@Entity
@Setter
@Getter
@Builder
@NoArgsConstructor
@AllArgsConstructor
public class User {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
@Column(nullable = false)
private Integer id;
@Column(unique = true, nullable = false, length = 100)
private String email;
@Column(unique = true, nullable = false, length = 100)
private String name;
@ManyToMany()
@JoinTable(
name = "users_movies",
joinColumns = @JoinColumn(name = "user_id"),
inverseJoinColumns = @JoinColumn(name = "movie_id")
)
private Set<Movie> movies = new HashSet<>();
}
存储库
public interface UserRepository extends CrudRepository<User, Integer> {
}
public interface MovieRepository extends CrudRepository<Movie, Integer> {
}
运行它：
@Bean
public CommandLineRunner loadData(UserRepository userRepository, MovieRepository movieRepository) {
return args -> {
Movie movie1 = Movie.builder().name("Movie 1").description("Movie 1 description").releaseDate(2010).build();
Movie movie2 = Movie.builder().name("Movie 2").description("Movie 2 description").releaseDate(2020).build();
Movie createdMovie1 = movieRepository.save(movie1);
Movie createdMovie2 = movieRepository.save(movie2);
User user = User.builder().email("[email protected]").name("John Doe").build();
user.getMovies().add(createdMovie1);
user.getMovies().add(createdMovie2);
User createdUser = userRepository.save(user);
};
}
当我启动SpringBoot应用程序时，它抛出以下异常：
Caused by: java.sql.SQLSyntaxErrorException: Table 'user-service.users_movies' doesn't exist
我一直遇到这个错误，有解决办法吗？
这是日志：
2023-09-05T21:27:20.389+08:00 INFO 5395 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2023-09-05T21:27:21.159+08:00 INFO 5395 --- [ main] com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Added connection com.mysql.cj.jdbc.ConnectionImpl@78eafad
2023-09-05T21:27:21.165+08:00 INFO 5395 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2023-09-05T21:27:21.254+08:00 INFO 5395 --- [ main] SQL dialect : HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect
Hibernate:
alter table users_movies
drop
foreign key FKt4hasm7tvj0vor58ql33xptjy
2023-09-05T21:27:23.098+08:00 WARN 5395 --- [ main] o.h.t.s.i.ExceptionHandlerLoggedImpl : GenerationTarget encountered exception accepting command : Error executing DDL "
alter table users_movies
drop
foreign key FKt4hasm7tvj0vor58ql33xptjy" via JDBC Statement
org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL "
alter table users_movies
drop
foreign key FKt4hasm7tvj0vor58ql33xptjy" via JDBC Statement
at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:67) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.internal.SchemaDropperImpl.applySqlString(SchemaDropperImpl.java:419) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.internal.SchemaDropperImpl.applySqlStrings(SchemaDropperImpl.java:403) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.internal.SchemaDropperImpl.applyConstraintDropping(SchemaDropperImpl.java:373) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.internal.SchemaDropperImpl.dropFromMetadata(SchemaDropperImpl.java:256) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.internal.SchemaDropperImpl.performDrop(SchemaDropperImpl.java:178) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop(SchemaDropperImpl.java:149) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop(SchemaDropperImpl.java:117) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:242) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.lambda$process$5(SchemaManagementToolCoordinator.java:143) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at java.base/java.util.HashMap.forEach(HashMap.java:1421) ~[na:na]
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:140) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:336) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:415) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1423) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:75) ~[spring-orm-6.0.11.jar:6.0.11]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:376) ~[spring-orm-6.0.11.jar:6.0.11]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-6.0.11.jar:6.0.11]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-6.0.11.jar:6.0.11]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:352) ~[spring-orm-6.0.11.jar:6.0.11]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1817) ~[spring-beans-6.0.11.jar:6.0.11]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1766) ~[spring-beans-6.0.11.jar:6.0.11]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:598) ~[spring-beans-6.0.11.jar:6.0.11]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:520) ~[spring-beans-6.0.11.jar:6.0.11]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) ~[spring-beans-6.0.11.jar:6.0.11]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-6.0.11.jar:6.0.11]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[spring-beans-6.0.11.jar:6.0.11]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-6.0.11.jar:6.0.11]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1155) ~[spring-context-6.0.11.jar:6.0.11]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932) ~[spring-context-6.0.11.jar:6.0.11]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:608) ~[spring-context-6.0.11.jar:6.0.11]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) ~[spring-boot-3.0.9.jar:3.0.9]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:732) ~[spring-boot-3.0.9.jar:3.0.9]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434) ~[spring-boot-3.0.9.jar:3.0.9]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:310) ~[spring-boot-3.0.9.jar:3.0.9]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1304) ~[spring-boot-3.0.9.jar:3.0.9]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1293) ~[spring-boot-3.0.9.jar:3.0.9]
at com.zousysko.UserApplication.main(UserApplication.java:20) ~[main/:na]
Caused by: java.sql.SQLSyntaxErrorException: Table 'user-service.users_movies' doesn't exist
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:121) ~[mysql-connector-j-8.0.33.jar:8.0.33]
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) ~[mysql-connector-j-8.0.33.jar:8.0.33]
at com.mysql.cj.jdbc.StatementImpl.executeInternal(StatementImpl.java:763) ~[mysql-connector-j-8.0.33.jar:8.0.33]
at com.mysql.cj.jdbc.StatementImpl.execute(StatementImpl.java:648) ~[mysql-connector-j-8.0.33.jar:8.0.33]
at com.zaxxer.hikari.pool.ProxyStatement.execute(ProxyStatement.java:94) ~[HikariCP-5.0.1.jar:na]
at com.zaxxer.hikari.pool.HikariProxyStatement.execute(HikariProxyStatement.java) ~[HikariCP-5.0.1.jar:na]
Caused by: java.sql.SQLSyntaxErrorException: Table 'user-service.users_movies' doesn't exist
at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:54) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
... 37 common frames omitted
Hibernate:
alter table users_movies
drop
foreign key FKhhj9vi206o88q0typfntk3fek
2023-09-05T21:27:23.118+08:00 WARN 5395 --- [ main] o.h.t.s.i.ExceptionHandlerLoggedImpl : GenerationTarget encountered exception accepting command : Error executing DDL "
alter table users_movies
drop
foreign key FKhhj9vi206o88q0typfntk3fek" via JDBC Statement
org.hibernate.tool.schema.spi.CommandAcceptanceException: Error executing DDL "
alter table users_movies
drop
foreign key FKhhj9vi206o88q0typfntk3fek" via JDBC Statement
at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:67) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.internal.SchemaDropperImpl.applySqlString(SchemaDropperImpl.java:419) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.internal.SchemaDropperImpl.applySqlStrings(SchemaDropperImpl.java:403) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.internal.SchemaDropperImpl.applyConstraintDropping(SchemaDropperImpl.java:373) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.internal.SchemaDropperImpl.dropFromMetadata(SchemaDropperImpl.java:256) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.internal.SchemaDropperImpl.performDrop(SchemaDropperImpl.java:178) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop(SchemaDropperImpl.java:149) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop(SchemaDropperImpl.java:117) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:242) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.lambda$process$5(SchemaManagementToolCoordinator.java:143) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at java.base/java.util.HashMap.forEach(HashMap.java:1421) ~[na:na]
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:140) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:336) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:415) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1423) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:75) ~[spring-orm-6.0.11.jar:6.0.11]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:376) ~[spring-orm-6.0.11.jar:6.0.11]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-6.0.11.jar:6.0.11]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-6.0.11.jar:6.0.11]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:352) ~[spring-orm-6.0.11.jar:6.0.11]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1817) ~[spring-beans-6.0.11.jar:6.0.11]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1766) ~[spring-beans-6.0.11.jar:6.0.11]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:598) ~[spring-beans-6.0.11.jar:6.0.11]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:520) ~[spring-beans-6.0.11.jar:6.0.11]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) ~[spring-beans-6.0.11.jar:6.0.11]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-6.0.11.jar:6.0.11]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[spring-beans-6.0.11.jar:6.0.11]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-6.0.11.jar:6.0.11]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1155) ~[spring-context-6.0.11.jar:6.0.11]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932) ~[spring-context-6.0.11.jar:6.0.11]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:608) ~[spring-context-6.0.11.jar:6.0.11]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) ~[spring-boot-3.0.9.jar:3.0.9]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:732) ~[spring-boot-3.0.9.jar:3.0.9]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434) ~[spring-boot-3.0.9.jar:3.0.9]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:310) ~[spring-boot-3.0.9.jar:3.0.9]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1304) ~[spring-boot-3.0.9.jar:3.0.9]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1293) ~[spring-boot-3.0.9.jar:3.0.9]
at com.zousysko.UserApplication.main(UserApplication.java:20) ~[main/:na]
Caused by: java.sql.SQLSyntaxErrorException: Table 'user-service.users_movies' doesn't exist
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:121) ~[mysql-connector-j-8.0.33.jar:8.0.33]
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) ~[mysql-connector-j-8.0.33.jar:8.0.33]
at com.mysql.cj.jdbc.StatementImpl.executeInternal(StatementImpl.java:763) ~[mysql-connector-j-8.0.33.jar:8.0.33]
at com.mysql.cj.jdbc.StatementImpl.execute(StatementImpl.java:648) ~[mysql-connector-j-8.0.33.jar:8.0.33]
at com.zaxxer.hikari.pool.ProxyStatement.execute(ProxyStatement.java:94) ~[HikariCP-5.0.1.jar:na]
at com.zaxxer.hikari.pool.HikariProxyStatement.execute(HikariProxyStatement.java) ~[HikariCP-5.0.1.jar:na]
at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:54) ~[hibernate-core-6.1.7.Final.jar:6.1.7.Final]
... 37 common frames omitted
Hibernate:
drop table if exists movies
Hibernate:
drop table if exists movies_seq
Hibernate:
drop table if exists users
Hibernate:
drop table if exists users_movies
Hibernate:
drop table if exists users_seq
Hibernate:
create table movies (
id integer not null,
description tinytext,
name varchar(150) not null,
release_date integer not null,
primary key (id)
) engine=InnoDB
Hibernate:
create table movies_seq (
next_val bigint
) engine=InnoDB
Hibernate:
insert into movies_seq values ( 1 )
Hibernate:
create table users (
id integer not null,
email varchar(100) not null,
name varchar(100) not null,
primary key (id)
) engine=InnoDB
Hibernate:
create table users_movies (
user_id integer not null,
movie_id integer not null,
primary key (user_id, movie_id)
) engine=InnoDB
Hibernate:
create table users_seq (
next_val bigint
) engine=InnoDB
Hibernate:
insert into users_seq values ( 1 )
Hibernate:
alter table users
add constraint UK_6dotkott2kjsp8vw4d0m25fb7 unique (email)
Hibernate:
alter table users
add constraint UK_3g1j96g94xpk3lpxl2qbl985x unique (name)
Hibernate:
alter table users_movies
add constraint FKt4hasm7tvj0vor58ql33xptjy
foreign key (movie_id)
references movies (id)
Hibernate:
alter table users_movies
add constraint FKhhj9vi206o88q0typfntk3fek
foreign key (user_id)
references users (id)
2023-09-05T21:27:23.545+08:00 INFO 5395 --- [ main] o.h.e.t.j.p.i.JtaPlatformInitiator : HHH000490: Using JtaPlatform implementation: [org.hibernate.engine.transaction.jta.platform.internal.NoJtaPlatform]
2023-09-05T21:27:23.568+08:00 INFO 5395 --- [ main] j.LocalContainerEntityManagerFactoryBean : Initialized JPA EntityManagerFactory for persistence unit 'default'
2023-09-05T21:27:24.234+08:00 WARN 5395 --- [ main] JpaBaseConfiguration$JpaWebConfiguration : spring.jpa.open-in-view is enabled by default. Therefore, database queries may be performed during view rendering. Explicitly configure spring.jpa.open-in-view to disable this warning
2023-09-05T21:27:24.930+08:00 INFO 5395 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat started on port(s): 8077 (http) with context path ''
2023-09-05T21:27:24.942+08:00 INFO 5395 --- [ main] com.zousysko.UserApplication : Started UserApplication in 10.429 seconds (process running for 12.753)
2023-09-05T21:27:24.949+08:00 INFO 5395 --- [ main] com.zousysko.UserApplication : hello!!
Hibernate:
select
next_val as id_val
from
movies_seq for update
Hibernate:
update
movies_seq
set
next_val= ?
where
next_val=?
Hibernate:
insert
into
movies
(description, name, release_date, id)
values
(?, ?, ?, ?)
Hibernate:
select
next_val as id_val
from
movies_seq for update
Hibernate:
update
movies_seq
set
next_val= ?
where
next_val=?
Hibernate:
insert
into
movies
(description, name, release_date, id)
values
(?, ?, ?, ?)
> Task :JPA:UserApplication.main() FAILED
Execution failed for task ':JPA:UserApplication.main()'.
> Process 'command '/Applications/IntelliJ IDEA CE.app/Contents/jbr/Contents/Home/bin/java'' finished with non-zero exit value 255
解决方法：
User user = User.builder().email("[email protected]").name("John Doe").movies(new HashSet<>()).build();
这是因为电影集没有初始化。