Таблица не существует: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException

Question

Entity 1:

@Entity 
@Table(name = "META_INF") 
@Inheritance(strategy = InheritanceType.JOINED) 
public class META_INF { 

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

    @NotBlank 
    @Column(nullable = false) 
    private Boolean aa; 

    @ManyToOne 
    private USER bb; 

    @NotBlank 
    @JoinColumn(nullable = false) 
    @ManyToOne 
    private USER cc; 

    @NotBlank 
    @Column(nullable = false) 
    private Boolean dd; 

    private String ee; 

    @NotBlank 
    @Column(nullable = false) 
    private Boolean ff; 

    @NotBlank 
    @JoinColumn(nullable = false, name = "tt") 
    @ManyToOne 
    private AZE tt; 


} 

Entity 2:

@Entity 
@Table(name = "QWE", uniqueConstraints = { 
     @UniqueConstraint(columnNames = { "a", "b", "c", "d" }) }) 
public class QWE extends META_INF { 

    @NotBlank 
    @JoinColumn(nullable = false, name = "a") 
    @ManyToOne 
    private PIL_P_TRATMNT a; 

    @NotBlank 
    @Column(nullable = false, name = "b") 
    private String b; 

    @NotBlank 
    @Min(value = 0) 
    @Digits(integer = 3, fraction = 0) 
    @Column(nullable = false, name = "c") 
    private int c; 

    @NotBlank 
    @Min(value = 0) 
    @Digits(integer = 3, fraction = 0) 
    @Column(nullable = false, name = "d") 
    private int d; 

    @NotBlank 
    @Column(nullable = false, name = "e") 
    private String e; 

    @Column(name = "f") 
    private String f; 


    @NotBlank 
    @Column(nullable = false, name = "g") 
    private String g; 

    @NotBlank 
    @Column(nullable = false, name = "h") 
    private String h; 

    @NotBlank 
    @Column(nullable = false, name = "i") 
    private String i; 

    @Digits(integer = 2, fraction = 0) 
    @Column(name = "j") 
    private int j; 

    public QWE() { 
    } 

} 

и много других организаций.

application.properties для указания учетных данных для доступа с в базе:

jdbc.driverClassName = com.mysql.jdbc.Driver 
jdbc.url = jdbc:mysql://localhost:3306/transverse 
jdbc.username = root 
jdbc.password = root 
hibernate.dialect = org.hibernate.dialect.MySQLDialect 
hibernate.show_sql = true 
hibernate.format_sql = true 
hibernate.hbm2ddl.auto=create 

База данных пуста. когда я пытаюсь запустить приложение SpringMVC, это дает мне эту ошибку (таблицы создаются в БД):

WARN : org.hibernate.tool.schema.internal.ExceptionHandlerLoggedImpl - GenerationTarget encountered exception accepting command : Unable to execute command [ 
    alter table QWE 
     drop 
     foreign key FK5f4s5qg3vma47jthit51i7wvy] 
org.hibernate.tool.schema.spi.CommandAcceptanceException: Unable to execute command [ 
    alter table QWE 
     drop 
     foreign key FK5f4s5qg3vma47jthit51i7wvy] 
    at org.hibernate.tool.schema.internal.exec.GenerationTargetToDatabase.accept(GenerationTargetToDatabase.java:63) 
    at org.hibernate.tool.schema.internal.SchemaDropperImpl.applySqlString(SchemaDropperImpl.java:370) 
    at org.hibernate.tool.schema.internal.SchemaDropperImpl.applySqlStrings(SchemaDropperImpl.java:355) 
    at org.hibernate.tool.schema.internal.SchemaDropperImpl.applyConstraintDropping(SchemaDropperImpl.java:327) 
    at org.hibernate.tool.schema.internal.SchemaDropperImpl.dropFromMetadata(SchemaDropperImpl.java:229) 
    at org.hibernate.tool.schema.internal.SchemaDropperImpl.performDrop(SchemaDropperImpl.java:153) 
    at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop(SchemaDropperImpl.java:125) 
    at org.hibernate.tool.schema.internal.SchemaDropperImpl.doDrop(SchemaDropperImpl.java:111) 
    at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.performDatabaseAction(SchemaManagementToolCoordinator.java:137) 
    at org.hibernate.tool.schema.spi.SchemaManagementToolCoordinator.process(SchemaManagementToolCoordinator.java:64) 
    at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:458) 
    at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:465) 
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:708) 
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:724) 
    at org.springframework.orm.hibernate5.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:416) 
    at org.springframework.orm.hibernate5.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:401) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574) 
    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$1.getObject(AbstractBeanFactory.java:306) 
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) 
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1192) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1116) 
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545) 
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) 
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214) 
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) 
    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.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772) 
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) 
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) 
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444) 
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326) 
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107) 
    at io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:187) 
    at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:198) 
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:100) 
    at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:82) 
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
    at java.lang.Thread.run(Thread.java:745) 
    at org.jboss.threads.JBossThread.run(JBossThread.java:320) 
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Table 'transverse.qwe' doesn't exist 

я получил ту же ошибку для всех других субъектов

Answer 1

Вы упомянули:

База данных пуста. когда я пытаюсь запустить приложение SpringMVC, он дает мне эту ошибку.

Ожидается, что вы получите эту ошибку, когда база данных пуста. Вот что произойдет, если вы укажете hbm2ddl.auto = create.

--Execute the scripts in this order 
alter table <TABLE NAME> drop foreign key <CONSTRAINT NAME>; 

drop table <TABLE NAME> if exists 

create table <TABLE NAME> 

alter table <TABLE NAME> add constraint <CONSTRAINT NAME>  

Когда спящий режим запускает сценарии с этими настройками в самый первый раз, ошибки, которые обнаружены, поскольку constriants отсутствуют будут регистрироваться в качестве предупреждения. Сценарии DROP не сбой, так как они имеют проверку if exists.

На втором запуске ограничения будут существовать, и инструкции alter table drop constraint не будут терпеть неудачу. Следовательно, вы не увидите никаких ошибок.