控制台错误如下,我正在尝试一个简单的应用程序来了解如何使用hibernate在数据库中保留集合。我正在使用eclipse,hibernate 3.3。据我所知,我做对了。但控制台错误说我错了。
21:33:51,354 INFO Version:15 - Hibernate Annotations 3.4.0.GA
21:33:51,363 INFO Environment:560 - Hibernate 3.3.2.GA
21:33:51,364 INFO Environment:593 - hibernate.properties not found
21:33:51,366 INFO Environment:771 - Bytecode provider name : javassist
21:33:51,369 INFO Environment:652 - using JDK 1.4 java.sql.Timestamp handling
21:33:51,416 INFO Version:14 - Hibernate Commons Annotations 3.1.0.GA
21:33:51,417 INFO Configuration:1474 - configuring from resource: /hibernate.cfg.xml
21:33:51,418 INFO Configuration:1451 - Configuration resource: /hibernate.cfg.xml
21:33:51,475 INFO Configuration:1589 - Configured SessionFactory: null
21:33:51,477 INFO HibernateSearchEventListenerRegister:53 - Unable to find org.hibernate.search.event.FullTextIndexEventListener on the classpath. Hibernate Search is not enabled.
21:33:51,510 INFO AnnotationBinder:419 - Binding entity from annotated class: com.hibernate.CollectionDemo.UserDetail
21:33:51,533 INFO EntityBinder:422 - Bind entity com.hibernate.CollectionDemo.UserDetail on table USER_DETAIL_COLLECTIONS
21:33:51,562 INFO AnnotationConfiguration:369 - Hibernate Validator not found: ignoring
Exception in thread "main" org.hibernate.MappingException: Could not determine type for: java.util.Set, at table: USER_DETAIL_COLLECTIONS, for columns: [org.hibernate.mapping.Column(listOfAddress)]
at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:292)
at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:276)
at org.hibernate.mapping.Property.isValid(Property.java:207)
at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:458)
at org.hibernate.mapping.RootClass.validate(RootClass.java:215)
at org.hibernate.cfg.Configuration.validate(Configuration.java:1149)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1334)
at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:867)
at com.hibernate.CollectionDemo.TestUserDetail.main(TestUserDetail.java:15)
我的模特课就在这里
package com.hibernate.CollectionDemo;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.ElementCollection;
import javax.persistence.Entity;
import javax.persistence.Id;
@Entity(name="USER_DETAIL_COLLECTIONS")
public class UserDetail
{
@Id
private int userId;
private String userName;
@ElementCollection(targetClass=Address.class)
private Set<Address> listOfAddress=new HashSet<Address>();
public int getUserId() {
return userId;
}
public void setUserId(int userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public Set<Address> getListOfAddress() {
return listOfAddress;
}
public void setListOfAddress(Set<Address> listOfAddress) {
this.listOfAddress = listOfAddress;
}
}
这里包含将嵌入在userdetail类中的地址类
package com.hibernate.CollectionDemo;
import javax.persistence.Embeddable;
@Embeddable
public class Address
{
private String city;
private String streetName;
private String pincode;
private String State;
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getStreetName() {
return streetName;
}
public void setStreetName(String streetName) {
this.streetName = streetName;
}
public String getPincode() {
return pincode;
}
public void setPincode(String pincode) {
this.pincode = pincode;
}
public String getState() {
return State;
}
public void setState(String state) {
State = state;
}
}
这里是我的配置文件
<?xml version='1.0' encoding='utf-8'?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<!-- Database connection settings -->
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost:3306/testDb</property>
<property name="connection.username">root</property>
<property name="connection.password"></property>
<!-- <property name="hibernate.default_schema">TESTSCHEMA</property> -->
<!-- JDBC connection pool (use the built-in) -->
<property name="connection.pool_size">2</property>
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<!-- Enable Hibernate's current session context -->
<property name="current_session_context_class">thread</property>
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
<!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
<property name="hbm2ddl.auto">create</property>
<!-- name of the annotated entity class -->
<mapping class="com.hibernate.CollectionDemo.UserDetail"/>
<!--<mapping resource="org/hibernate/tutorial/domain/Event.hbm.xml"/>
<mapping resource="org/hibernate/tutorial/domain/Person.hbm.xml"/>
-->
</session-factory>
</hibernate-configuration>
答案 0 :(得分:0)
作为documented,在JPA 2.0中引入了@ElementCollection。 Hibernate 3.3。实现JPA 1,这就是为什么使用这个结构不会起作用的原因。
通过更新到更新的Hibernate版本可以解决问题。一种选择是至少更新为3.6.10(最新且可能持续3.x) - 可能立即转到休眠4.x。