[英]Schema-validation: missing table [hibernate_sequences]
I use Spring 4.3.3.RELEASE, Hibernate 5.2.2.Final, the database is MySQL. I wanted to try strategy = GenerationType.TABLE .我用的是Spring 4.3.3.RELEASE,Hibernate 5.2.2.Final,数据库是MySQL。我想试试strategy = GenerationType.TABLE 。 As I know for GenerationType.SEQUENCE I need sequences in the database to generate ids.
据我所知,对于GenerationType.SEQUENCE ,我需要数据库中的序列来生成 ID。
This is my entity.这是我的实体。
@Entity(name = CommentTable.TABLE_NAME)
public class Comment {
private Integer id;
private String title;
private String message;
private LocalDateTime createdDateTime;
private Issue issue;
public Comment() {
}
@Id
@GeneratedValue(strategy = GenerationType.TABLE)
@Column(name = CommentTable.COLUMN_ID, unique = true, nullable = false)
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
//Other getters and setters.
}
Spring annotation configuration Spring注解配置
@Configuration
@ComponentScan("com.ita.training.otm")
@ImportResource("classpath:/config.xml") // XML with DataSource bean
@EnableTransactionManagement
public class AppConfiguration {
}
Spring xml configuration Spring xml 配置
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<bean id="emf" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="com.ita.training.otm.core.model" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
</property>
<property name="jpaProperties">
<props>
<prop key="hibernate.hbm2ddl.auto">validate</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop>
</props>
</property>
</bean>
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/spring_test" />
<property name="username" value="user" />
<property name="password" value="1111" />
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="emf" />
<property name="dataSource" ref="dataSource" />
</bean>
<tx:annotation-driven />
</beans>
When I run my application, I get当我运行我的应用程序时,我得到
Exception in thread "main" org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'emf' defined in class path resource [config.xml]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1583)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1076)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:851)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)
at org.springframework.context.annotation.AnnotationConfigApplicationContext.<init>(AnnotationConfigApplicationContext.java:84)
at com.ita.training.otm.app.Main.main(Main.java:10)
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.persistenceException(EntityManagerFactoryBuilderImpl.java:951)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:881)
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:60)
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:353)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:373)
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:362)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1642)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1579)
... 11 more
Caused by: org.hibernate.tool.schema.spi.SchemaManagementException: Schema-validation: missing table [hibernate_sequences]
at org.hibernate.tool.schema.internal.SchemaValidatorImpl.validateTable(SchemaValidatorImpl.java:125)
at org.hibernate.tool.schema.internal.SchemaValidatorImpl.performValidation(SchemaValidatorImpl.java:95)
at org.hibernate.tool.schema.internal.SchemaValidatorImpl.doValidation(SchemaValidatorImpl.java:62)
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:184)
at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:65)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:307)
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:490)
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:878)
... 17 more
The exception is occured because you haven't mentioned generator
in @GeneratedValue
..Below is the example 发生异常是因为您没有在
@GeneratedValue
提到generator
。下面是示例
@GeneratedValue(strategy=GenerationType.TABLE, generator="course")
@TableGenerator(
name="course",
table="GENERATOR_TABLE",
pkColumnName = "key",
valueColumnName = "next",
pkColumnValue="course",
allocationSize=30
)
private int id;
I solved it by using the property我通过使用属性解决了它
spring:
jpa:
hibernate:
use-new-id-generator-mappings: false
I was using spring boot V2.5.9我用的是spring boot V2.5.9
With this setting the hibernate sequence is generated if missing.使用此设置,如果缺少,则会生成 hibernate 序列。 Then also no need for the
@GeneratedValue
annotation.然后也不需要
@GeneratedValue
注释。
I had to keep this project in runnable mode before I start working on my actual task, I have solved this exception and started my application with following steps:在开始执行实际任务之前,我必须将此项目保持在可运行模式,我已经解决了这个异常并通过以下步骤启动了我的应用程序:
Actual problem that I understood is, the existing database schema had tables, constraints and data which is not in sync with my current code.我理解的实际问题是,现有的数据库模式包含与我当前代码不同步的表、约束和数据。
My Goal is to make my application to Start and these steps helped me.我的目标是让我的应用程序开始,这些步骤帮助了我。
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