我正在尝试使用条件
从Messages表中获取所有条目Criteria getCriteria = session.createCriteria(MessageAttributes.class);
List<MessageAttributes> unProcessedJcbMessagesList=getCriteria.list();
当我尝试运行超出标准时,我正在跟踪异常。 FieldId是AvailableFields(AvailableFieldsIs)表中的外键。
IllegalArgumentException occurred while calling setter for property [com.alu.jcb.model.MessageAttributes.fieldId (expected type = com.alu.jcb.model.AvailableFields)]; target = [com.alu.jcb.model.MessageAttributes@1cf3877], property value = [2]
at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:123)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.setPropertyValues(AbstractEntityTuplizer.java:713)
at org.hibernate.tuple.entity.PojoEntityTuplizer.setPropertyValues(PojoEntityTuplizer.java:362)
at org.hibernate.persister.entity.AbstractEntityPersister.setPropertyValues(AbstractEntityPersister.java:4718)
at org.hibernate.engine.internal.TwoPhaseLoad.doInitializeEntity(TwoPhaseLoad.java:188)
at org.hibernate.engine.internal.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:144)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:1115)
at org.hibernate.loader.Loader.processResultSet(Loader.java:973)
at org.hibernate.loader.Loader.doQuery(Loader.java:921)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:355)
at org.hibernate.loader.Loader.doList(Loader.java:2554)
at org.hibernate.loader.Loader.doList(Loader.java:2540)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2370)
at org.hibernate.loader.Loader.list(Loader.java:2365)
at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:126)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1718)
at org.hibernate.internal.CriteriaImpl.list(CriteriaImpl.java:380)
at com.alu.jcb.messageProcessor.Test.main(Test.java:23)
Caused by: java.lang.IllegalArgumentException: argument type mismatch
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.hibernate.property.BasicPropertyAccessor$BasicSetter.set(BasicPropertyAccessor.java:68)
... 17 more
豆
MessageAttributes.java
public class MessageAttributes {
private long messageAttributeId=1L;
private AvailableFields fieldId;
private String value;
//getters and setters
}
AvailableFields.java
public class AvailableFields {
private long availableFieldsId=1L;
private Instance instance;
private String fieldDisplayName;
//getters and setters
}
HBM文件 的 MessageAttributes.hbm.xml
<hibernate-mapping package="com.alu.jcb.model">
<class name="MessageAttributes" table="MESSAGE_ATTRIBUTES">
<id name="messageAttributeId" column="message_attribute_id" type="long">
<generator class="sequence" />
</id>
<many-to-one name="fieldId" class="com.alu.jcb.model.AvailableFields" fetch="select">
<column name="field_id" not-null="true" />
</many-to-one>
<property name="value" type="string" column="value" />
</class>
</hibernate-mapping>
AvailableFields.hbm.xml
<hibernate-mapping package="com.alu.jcb.model">
<class name="AvailableFields" table="AVAILABLE_FIELDS">
<id name="availableFieldsId" column="available_fields_id" type="java.lang.Long">
<generator class="sequence" />
</id>
<many-to-one name="instance" class="com.alu.jcb.model.Instance" fetch="select">
<column name="instance_id" not-null="true" />
</many-to-one>
<property name="fieldDisplayName" type="string" column="field_display_name" not-null="true"/>
</class>
</hibernate-mapping>
请帮帮我
答案 0 :(得分:1)
错误意味着fieldId
的setter出错了。它应该是这样的
public void setFieldId(AvailableFields fieldId) {
this.fieldId=fieldId;
}
但似乎在你的情况下,在setter中使用了不正确的类(guess long)。