gorm继承导致DuplicateMappingException

Question

重新加载子类时，我的webapp表现得很奇怪

package test
class Test {

    Integer amount

    //static mapping = {
    //    tablePerHierarchy true
    //    autoImport false
    //}
}

和子类

package test
class Test1 extends Test{
    String cardNumber
}

在重新加载父类之后创建新表

但是如果我重新加载子类

， grails 控制台会抛出错误

ERROR org.grails.plugins.AbstractGrailsPluginManager - Plugin [domainClass:3.0.9] could not reload changes to file [/home/gkiko/workspace/test/grails-app/domain/test/Test1.groovy]: Error creating bean with name 'org.grails.internal.SESSION_FACTORY_HOLDER-reloaded': Cannot create inner bean '(inner bean)#d22a35c' of type [org.grails.orm.hibernate.ConfigurableLocalSessionFactoryBean] while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#d22a35c': Invocation of init method failed; nested exception is org.hibernate.DuplicateMappingException: Duplicate class/entity mapping test.Test1
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.grails.internal.SESSION_FACTORY_HOLDER-reloaded': Cannot create inner bean '(inner bean)#d22a35c' of type [org.grails.orm.hibernate.ConfigurableLocalSessionFactoryBean] while setting bean property 'sessionFactory'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#d22a35c': Invocation of init method failed; nested exception is org.hibernate.DuplicateMappingException: Duplicate class/entity mapping test.Test1
.... some more stacktrace
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#d22a35c': Invocation of init method failed; nested exception is org.hibernate.DuplicateMappingException: Duplicate class/entity mapping test.Test1

我该如何解决问题？

• Grails版本：3.0.11
• Groovy版本：2.4.5
• JVM版本：1.7.0_91

Answer 1

如果要对域类进行任何更改，则应重新启动应用程序。虽然它在您修改父类时工作正常，但动态域实体创建功能仍然无法正常工作。