我使用Hibernate的註解,有一個非常基本的數據對象:
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.Id;
@Entity
public class State implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
@Id
private String stateCode;
private String stateFullName;
public String getStateCode() {
return stateCode;
}
public void setStateCode(String stateCode) {
this.stateCode = stateCode;
}
public String getStateFullName() {
return stateFullName;
}
public void setStateFullName(String stateFullName) {
this.stateFullName = stateFullName;
}
}
,我試圖以下運行測試用例:
public void testCreateState(){
Session s = HibernateUtil.getSessionFactory().getCurrentSession();
Transaction t = s.beginTransaction();
State state = new State();
state.setStateCode("NE");
state.setStateFullName("Nebraska");
s.save(s);
t.commit();
}
,並得到一個
org.hibernate.MappingException: Unknown entity: $Proxy2
at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:628)
at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1366)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:121)
....
我一直沒能找到任何引用錯誤的$代理部分 - 並在虧損.. A指出我錯過的東西將不勝感激。
的hibernate.cfg.xml
<property name="hibernate.connection.driver_class">org.hsqldb.jdbcDriver</property>
<property name="connection.url">jdbc:hsqldb:hsql://localhost/xdb</property>
<property name="connection.username">sa</property>
<property name="connection.password"></property>
<property name="current_session_context_class">thread</property>
<property name="dialect">org.hibernate.dialect.HSQLDialect</property>
<property name="show_sql">true</property>
<property name="hbm2ddl.auto">update</property>
<property name="hibernate.transaction.factory_class">org.hibernate.transaction.JDBCTransactionFactory</property>
<mapping class="com.test.domain.State"/>
在HibernateUtil.java
public static SessionFactory getSessionFactory(boolean testing) {
if (sessionFactory == null){
try {
String configPath = HIBERNATE_CFG;
AnnotationConfiguration config = new AnnotationConfiguration();
config.configure(configPath);
sessionFactory = config.buildSessionFactory();
} catch (Exception e){
e.printStackTrace();
throw new ExceptionInInitializerError(e);
}
}
return sessionFactory;
}
你有沒有任何工具,正在做的豆AOP插樁? – Jherico 2010-01-15 18:15:58
當SF正在建立時,日誌中有什麼特別的東西? – 2010-01-15 19:22:59
這只是爲了確保在您的hibernate配置文件中將類命名爲com.test.domain.State,但在POJO中看不到包聲明。你錯過了一條線嗎? – bogertron 2010-01-16 01:00:08