Java IllegalArgumentException:应为IdClass映射
在部署我的应用程序期间,出现该异常。我的应用程序中有很多类,我不知道我必须把Java IllegalArgumentException:应为IdClass映射,java,hibernate,jboss7.x,Java,Hibernate,Jboss7.x,在部署我的应用程序期间,出现该异常。我的应用程序中有很多类,我不知道我必须把@IdClass放在哪里,这个异常意味着什么。 我正在使用Hibernate4.1和JBoss作为7.1 12:10:23,761 INFO [org.hibernate.engine.jdbc.internal.LobCreatorBuilder] (MSC service thread 1-5) HHH000424: Disabling contextual LOB creation as createClob()
@IdClass
放在哪里,这个异常意味着什么。
我正在使用Hibernate4.1和JBoss作为7.1
12:10:23,761 INFO [org.hibernate.engine.jdbc.internal.LobCreatorBuilder] (MSC service thread 1-5) HHH000424: Disabling contextual LOB creation as createClob() method threw error : java.lang.reflect.InvocationTargetException
12:10:24,075 ERROR [org.hibernate.tool.hbm2ddl.SchemaExport] (MSC service thread 1-5) HHH000389: Unsuccessful: drop sequence hibernate_sequence
12:10:24,076 ERROR [org.hibernate.tool.hbm2ddl.SchemaExport] (MSC service thread 1-5) ERROR: sequence "hibernate_sequence" does not exist
12:10:24,281 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-5) MSC00001: Failed to start service jboss.persistenceunit."kladr.ear/kladr-ejb-1.0-SNAPSHOT.jar#primary": org.jboss.msc.service.StartException in service jboss.persistenceunit."kladr.ear/kladr-ejb-1.0-SNAPSHOT.jar#primary": Failed to start service
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1767) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [rt.jar:1.6.0_35]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [rt.jar:1.6.0_35]
at java.lang.Thread.run(Thread.java:662) [rt.jar:1.6.0_35]
Caused by: java.lang.IllegalArgumentException: expecting IdClass mapping
at org.hibernate.ejb.metamodel.AttributeFactory$3.resolveMember(AttributeFactory.java:878)
at org.hibernate.ejb.metamodel.AttributeFactory$4.resolveMember(AttributeFactory.java:915)
at org.hibernate.ejb.metamodel.AttributeFactory.determineAttributeMetadata(AttributeFactory.java:423)
at org.hibernate.ejb.metamodel.AttributeFactory.buildAttribute(AttributeFactory.java:91)
at org.hibernate.ejb.metamodel.MetadataContext.wrapUp(MetadataContext.java:214)
at org.hibernate.ejb.metamodel.MetamodelImpl.buildMetamodel(MetamodelImpl.java:64)
at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:91)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:904)
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:889)
at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:73)
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.createContainerEntityManagerFactory(PersistenceUnitServiceImpl.java:162)
at org.jboss.as.jpa.service.PersistenceUnitServiceImpl.start(PersistenceUnitServiceImpl.java:85)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
... 3 more
12:10:23761 INFO[org.hibernate.engine.jdbc.internal.LobCreatorBuilder](MSC服务线程1-5)HH000424:禁用上下文LOB创建为createClob()方法引发错误:java.lang.reflect.InvocationTargetException
12:10:24075错误[org.hibernate.tool.hbm2ddl.SchemaExport](MSC服务线程1-5)HH000389:不成功:删除序列hibernate\u序列
12:10:24076错误[org.hibernate.tool.hbm2ddl.SchemaExport](MSC服务线程1-5)错误:序列“hibernate_sequence”不存在
12:10:24281错误[org.jboss.msc.service.fail](msc服务线程1-5)MSC00001:无法启动服务jboss.persistenceunit。“kladr.ear/kladr-ejb-1.0-SNAPSHOT.jar#primary”:org.jboss.msc.service.StartException in service jboss.persistenceunit。“kladr.ear/kladr-ejb-1.0-SNAPSHOT.jar#primary”:无法启动服务
在org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1767)[jboss-msc-1.0.2.GA.jar:1.0.2.GA]
位于java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)[rt.jar:1.6.035]
在java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)[rt.jar:1.6.035]
在java.lang.Thread.run(Thread.java:662)[rt.jar:1.6.035]
原因:java.lang.IllegalArgumentException:应为IdClass映射
位于org.hibernate.ejb.metamodel.AttributeFactory$3.resolvember(AttributeFactory.java:878)
位于org.hibernate.ejb.metamodel.AttributeFactory$4.resolvember(AttributeFactory.java:915)
位于org.hibernate.ejb.metamodel.AttributeFactory.determinateAttributeAttribute元数据(AttributeFactory.java:423)
位于org.hibernate.ejb.metamodel.AttributeFactory.buildAttribute(AttributeFactory.java:91)
位于org.hibernate.ejb.metamodel.MetadataContext.wrapUp(MetadataContext.java:214)
位于org.hibernate.ejb.metamodel.MetamodelImpl.buildMetamodel(MetamodelImpl.java:64)
位于org.hibernate.ejb.EntityManagerFactoryImpl。(EntityManagerFactoryImpl.java:91)
位于org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:904)
位于org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:889)
位于org.hibernate.ejb.HibernatePersistence.createContainerEntityManager工厂(HibernatePersistence.java:73)
位于org.jboss.as.jpa.service.PersistenceUnitServiceImpl.CreateContainerEntityManager工厂(PersistenceUnitServiceImpl.java:162)
位于org.jboss.as.jpa.service.PersistenceUnitServiceImpl.start(PersistenceUnitServiceImpl.java:85)
在org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811)[jboss-msc-1.0.2.GA.jar:1.0.2.GA]
在org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746)[jboss-msc-1.0.2.GA.jar:1.0.2.GA]
... 3个以上
@IdClass
注释用于定义包含id的类。也就是说,这通常用于定义复合键的情况。i、 e.多个属性的键组合。
如果是这样的话,我们就是这样做的。看看下面的例子。。我们将一个类定义为IdClass
,并使用@Id
为这个IdClass`定义变量Ids
例如:
@Entity
@IdClass(AssignedRoleId.class)
public class AssignedRole
{
@Id
@ManyToOne
private User userId;
@Id
@ManyToOne
private Role roleId;
private Date dateAssigned;
}
希望这有帮助 进一步详细说明@Mukul正确答案@IdClass
应具有以下属性:
它应该实现可序列化
它应该有一个接受Id的构造函数(即与@Id
关联的字段)
它应该覆盖equals
和hashCode
将此类作为实体的静态内部类有时很有用,下面是一个示例:
@Entity
@IdClass(AssignedRoleId.class)
public class AssignedRole
{
@Id
@ManyToOne
private User userId;
@Id
@ManyToOne
private Role roleId;
private Date dateAssigned;
public static class AssignedRoleId implements Serializable {
private User userId;
private Role roleId;
public AssignedRoleId() {}
public AssignedRoleId(User userId, Role roleId) {
this.userId = userId;
this.roleId = roleId;
}
@Override
public boolean equals(Object o) {
if (o == this) {
return true;
}
if (!(o instanceof AssignedRole)) {
return false;
}
AssignedRole assignedRole = (AssignedRole) o;
return Objects.equals(userId, assignedRole.getUserId()) &&
Objects.equals(roleId, assignedRole.getRoleId());
}
@Override
public int hashCode() {
return Objects.hash(userId, roleId);
}
}
}
您只能覆盖equals和hashcode,问题就会解决,还需要实现java.io.Serializable我也遇到了同样的问题。结果证明我没有正确使用Hibernate(不,不是Sherlock)。我的配置文件hibernate.cfg.xml
没有包含我的实体Java类。。。对于hibernate配置,我只使用hibernate.cfg.xml
文件,对于实体类,我只使用javax.persistence
注释
我只是在配置文件的底部添加了缺少的实体/类(总共4个类),并运行了测试代码,在我的案例中一切正常。我尝试了与u相同的方法,但红色标记显示在AssignedRoleId中。class@ashwinkarki我不知道为什么会这样。它是一个内部类,因此将在同一个包中。你能详细解释一下为什么会有红色标记吗。建议删除所有注释并设置一个基本的内部类。如果ID是string和int而不是bean,这也适用吗?@user666我认为它应该适用于所有需要复合键的类。在我的例子中,我创建了一个包含两个string和int变量的bean。如果使用@EmbeddedId
与@Id
一起