Hibernate报错 Cannot add foreign key constraint

Hibernate 一直报错

org.springframework.boot.SpringApplication:reportFailure:771-Application startup failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactoryat org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)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:1078)at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:857)at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360)at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118)at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107)at com.landawang.RiskcontrolApplication.main(RiskcontrolApplication.java:10)
Caused by: javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactoryat org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.persistenceException(EntityManagerFactoryBuilderImpl.java:954)at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:882)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:370)at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:359)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1687)at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1624)... 16 common frames omitted
Caused by: org.hibernate.tool.schema.spi.SchemaManagementException: Unable to execute schema management to JDBC target [alter table hits_disposition_comments add constraint FKe8sgx5cxt9fukyjawh4o8u9vd foreign key (hit_disp_id) references hits_disposition (id)]at org.hibernate.tool.schema.internal.TargetDatabaseImpl.accept(TargetDatabaseImpl.java:59)at org.hibernate.tool.schema.internal.SchemaMigratorImpl.applySqlString(SchemaMigratorImpl.java:431)at org.hibernate.tool.schema.internal.SchemaMigratorImpl.applySqlStrings(SchemaMigratorImpl.java:420)at org.hibernate.tool.schema.internal.SchemaMigratorImpl.applyForeignKeys(SchemaMigratorImpl.java:386)at org.hibernate.tool.schema.internal.SchemaMigratorImpl.doMigrationToTargets(SchemaMigratorImpl.java:214)at org.hibernate.tool.schema.internal.SchemaMigratorImpl.doMigration(SchemaMigratorImpl.java:60)at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:134)at org.hibernate.tool.hbm2ddl.SchemaUpdate.execute(SchemaUpdate.java:101)at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:472)at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:444)at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:879)... 22 common frames omitted
Caused by: java.sql.SQLException: Cannot add foreign key constraintat com.mysql.jdbc.SQLError.createSQLException(SQLError.java:964)at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3973)at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3909)at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2527)at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2680)at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2483)at com.mysql.jdbc.StatementImpl.executeUpdateInternal(StatementImpl.java:1552)at com.mysql.jdbc.StatementImpl.executeLargeUpdate(StatementImpl.java:2607)at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1480)at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)at java.lang.reflect.Method.invoke(Method.java:498)at org.apache.tomcat.jdbc.pool.StatementFacade$StatementProxy.invoke(StatementFacade.java:114)at com.sun.proxy.$Proxy98.executeUpdate(Unknown Source)at org.hibernate.tool.schema.internal.TargetDatabaseImpl.accept(TargetDatabaseImpl.java:56)... 32 common frames omitted

找了好几天，最后在网上国外网站上找到答案，下面源码：

    @OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)@JoinColumn(name = "hit_disp_id", referencedColumnName = "id")private Set<HitsDispositionComments> dispComments;

在@JoinColum中增加foreignKey = @ForeignKey(name = "none", value = ConstraintMode.NO_CONSTRAINT)

改为

@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)@JoinColumn(name = "hit_disp_id", referencedColumnName = "id", foreignKey = @ForeignKey(name = "none", value = ConstraintMode.NO_CONSTRAINT))private Set<HitsDispositionComments> dispComments;

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