5
我用我的域模型的枚举枚举场中的目标，但我得到以下错误，当我试图坚持对象到数据库：如何坚持有
Exception in thread "main" java.lang.ClassCastException: nl.ru.cmbi.pdbeter.core.model.enums.Enum_WhifFunction cannot be cast to java.lang.String
at org.hibernate.validator.NotEmptyValidator.isValid(NotEmptyValidator.java:36)
at org.hibernate.validator.ClassValidator.getInvalidValues(ClassValidator.java:386)
at org.hibernate.validator.ClassValidator.getInvalidValues(ClassValidator.java:352)
at org.hibernate.validator.event.ValidateEventListener.validate(ValidateEventListener.java:139)
at org.hibernate.validator.event.ValidateEventListener.onPreInsert(ValidateEventListener.java:172)
at org.hibernate.action.EntityIdentityInsertAction.preInsert(EntityIdentityInsertAction.java:142)
at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:65)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:279)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:321)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:204)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:130)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:210)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:195)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:117)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:93)
at org.hibernate.impl.SessionImpl.fireSaveOrUpdate(SessionImpl.java:535)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:527)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:523)
at nl.ru.cmbi.pdbeter.core.controller.DAO.GenericDAO.makePersistent(GenericDAO.java:73)
at nl.ru.cmbi.pdbeter.core.controller.DAO.WhifFunctionDAO.getWhifFunctionSet(WhifFunctionDAO.java:36)
at nl.ru.cmbi.pdbeter.core.controller.DAO.LoggedErrorWhifDAO.updateWhifFunctionSet(LoggedErrorWhifDAO.java:42)
at nl.ru.cmbi.pdbeter.whifclient.controller.WhifFunctionsUpdater.executeWhifFunctionsByAccessionCode(WhifFunctionsUpdater.java:93)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:616)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309)
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
at $Proxy31.executeWhifFunctionsByAccessionCode(Unknown Source)
at nl.ru.cmbi.pdbeter.whifclient.controller.WhifFunctionsExecutor.executeWhifFunctions(WhifFunctionsExecutor.java:26)
at nl.ru.cmbi.pdbeter.whifclient.controller.WhifClient.updateWhifFunctions(WhifClient.java:22)
at nl.ru.cmbi.pdbeter.updater.controller.UpdaterMain.start(UpdaterMain.java:65)
at nl.ru.cmbi.pdbeter.updater.controller.UpdaterMain.main(UpdaterMain.java:44)
这是我的域名模型：
package nl.ru.cmbi.pdbeter.core.model.domain;
import java.io.Serializable;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.EnumType;
import javax.persistence.Enumerated;
import javax.persistence.ManyToMany;
import lombok.AccessLevel;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.NoArgsConstructor;
import nl.ru.cmbi.pdbeter.core.model.enums.Enum_WhifFunction;
import org.hibernate.annotations.NaturalId;
import org.hibernate.validator.NotEmpty;
@Entity
@Data
@NoArgsConstructor(access = AccessLevel.PROTECTED)
@EqualsAndHashCode(callSuper = false, of = { "whifFunction" })
@SuppressWarnings("PMD.UnusedPrivateField")
public class WhifFunction extends DomainObject implements Serializable {
@NaturalId
@NotEmpty
@Enumerated(EnumType.STRING)
private Enum_WhifFunction whifFunction;
@ManyToMany(mappedBy = "whifFunctionSet", cascade = CascadeType.ALL)
private Set<LoggedErrorWhif> loggedErrorWhifSet = new HashSet<LoggedErrorWhif>();
public WhifFunction(Enum_WhifFunction whifFunction) {
if (whifFunction == null) {
throw new IllegalStateException("WhifFunction is null");
} else {
this.whifFunction = whifFunction;
}
}
@Override
public String toString() {
return whifFunction.toString();
}
}
为什么不是@Enumerated注释工作，因为我认为它应该工作？如果它按照预期的方式工作，那我该如何让它按我现在认为正在工作的方式工作？或换句话说：如何持久化一个枚举字段的对象。
编辑： 感谢您的所有答案。 NotEmpty在那里是偶然的，我没有看到它。我不得不做很多映射，所以我复制粘贴了很多东西，但是当我从字符串更改为枚举时，意外忘记删除NotEmpty。下次我会试着更仔细地看一下堆栈跟踪，我完全错过了NotEmptyValidator。
显示完整的堆栈跟踪，请。 – axtavt 2010-11-22 16:20:09
请提供一个SSCCE。顺便提一下，Enum_WhifFunction不遵循Java命名约定。我建议摆脱下划线。 – Puce 2010-11-22 16:26:30
添加了堆栈跟踪。 – FinalArt2005 2010-11-22 16:31:09