help!!hibernate could not insert one record with oracle!

[zisheng phenix]

envirment:
hibernate 3.2;
datbase oracle;
hibernateXML:

<?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">oracle.jdbc.driver.OracleDriver</property>
        <property name="connection.url">jdbc:oracle:thin:@218.198.118.78:1521:phenix</property>
        <property name="connection.username">U_Test</property>
        <property name="connection.password">U_Test</property>

        <!-- JDBC connection pool (use the built-in) -->
        <property name="connection.pool_size">1</property>

        <!-- SQL dialect -->
        <property name="dialect">org.hibernate.dialect.HSQLDialect</property>

        <!-- Enable Hibernate's automatic session context management -->
        <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>

        <mapping resource="hibernate3/pojo/person.hbm.xml"/>

    </session-factory>

</hibernate-configuration>
 

person.hbm.xml:

  
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
    <class name="hibernate3.pojo.Person" table="T_person">
        <id name="id" column="id" type="java.lang.Long">
          <generator class="native">
              <param name="sequence">S_Person_ID</param>
         </generator>
        </id>
        <property name="name"  column="name" type="java.lang.String"/>
    </class>
</hibernate-mapping>
  

table:

   
DROP SEQUENCE S_Person_ID;
CREATE SEQUENCE S_Person_ID INCREMENT BY 1 START WITH 1 
    MAXVALUE 1.0E28 MINVALUE 1 NOCYCLE 
    CACHE 20 ORDER;
DROP TABLE T_Person;
CREATE TABLE T_Person
(
	id NUMBER (18,0) NOT NULL PRIMARY KEY,		  --人员的ID号
	Name NVARCHAR2(50) NOT NULL		    		  --人员的名称
);
SQL> desc T_person
 名称                                      是否为空? 类型
 ----------------------------------------- -------- ----------------------------

 ID                                        NOT NULL NUMBER(18)
 NAME                                      NOT NULL NVARCHAR2(50)
 

my Test Code:

    
package cn.thinkmore.hibernate.session;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class Hibernate3Util {
	private static SessionFactory sessionFactory;
	static{
		sessionFactory=new Configuration().configure("/hibernateCFG.xml").buildSessionFactory();
	}
	private static final ThreadLocal<Session> sessionContainer=new ThreadLocal<Session>();
	public static Session currentSession(){
		Session session=(Session)sessionContainer.get();
		if(null==session){
			session=sessionFactory.openSession();
			sessionContainer.set(session);
		}
		return session;
	}
	public static void closeSession(){
		Session session=sessionContainer.get();
		if (null==session) {
		}else {
			session=sessionContainer.get();
			session.close();
		}
	}
}

import hibernate3.pojo.Person;

import org.hibernate.Session;
import org.hibernate.Transaction;

import cn.thinkmore.hibernate.session.Hibernate3Util;

public class TestSession {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Session session=Hibernate3Util.currentSession();
		Person person=new Person();
		person.setId(1);
		person.setName("phenix");
		Transaction ts=session.beginTransaction();
		session.save(person);
		ts.commit();
	}

}

error:



Hibernate: insert into T_person (id, name) values (null, ?)
Exception in thread "main" org.hibernate.exception.ConstraintViolationException: could not insert: [hibernate3.pojo.Person]
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:71)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
at org.hibernate.id.insert.AbstractSelectingDelegate.performInsert(AbstractSelectingDelegate.java:40)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2158)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(AbstractEntityPersister.java:2638)
at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentityInsertAction.java:48)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:250)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:298)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:181)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:107)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:187)
at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:172)
at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:535)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:523)
at org.hibernate.impl.SessionImpl.save(SessionImpl.java:519)
at test.TestSession.main(TestSession.java:21)
Caused by: java.sql.SQLException: ORA-01400: 无法将 NULL 插入 ("U_TEST"."T_PERSON"."ID")

at oracle.jdbc.dbaccess.DBError.throwSqlException(DBError.java:134)
at oracle.jdbc.ttc7.TTIoer.processError(TTIoer.java:289)
at oracle.jdbc.ttc7.Oall7.receive(Oall7.java:573)
at oracle.jdbc.ttc7.TTC7Protocol.doOall7(TTC7Protocol.java:1891)
at oracle.jdbc.ttc7.TTC7Protocol.parseExecuteFetch(TTC7Protocol.java:1093)
at oracle.jdbc.driver.OracleStatement.executeNonQuery(OracleStatement.java:2047)
at oracle.jdbc.driver.OracleStatement.doExecuteOther(OracleStatement.java:1940)
at oracle.jdbc.driver.OracleStatement.doExecuteWithTimeout(OracleStatement.java:2709)
at oracle.jdbc.driver.OraclePreparedStatement.executeUpdate(OraclePreparedStatement.java:589)
at org.hibernate.id.insert.AbstractSelectingDelegate.performInsert(AbstractSelectingDelegate.java:33)
... 16 more

[zisheng phenix]

[zisheng phenix]

person Class

package hibernate3.pojo;

public class Person {
private Integer id;
private String name;

public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}

[zisheng phenix]

help does not come？

[zisheng phenix]

This problem has been resolved.
change the hibernate.xml SQL dialect
<property name="dialect">org.hibernate.dialect.OracleDialect</property>
ok!

[Joachim Rohde]

A well-intentioned advice: read the article under http://catb.org/esr/faqs/smart-questions.html before you ask a question the next time.

[zisheng phenix]

Joachim Rohde wrote:A well-intentioned advice: read the article under http://catb.org/esr/faqs/smart-questions.html before you ask a question the next time.

thank you for your advice!I am studying hibernate ,you know,I am a beginner .could you give me some advice and
recommend some books,thank you very much