Hibernate Blob 操作问题！

数据库是ORACLE8.15，现在现象是好像一切都正常，日志也正常，可是数据库中始终没有数据，大大帮帮忙阿！

对应的JAVA文件和HBM如下

package com.sunix;

import java.io.Serializable;
import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;
import org.apache.commons.lang.builder.ToStringBuilder;
import java.sql.Blob;
/** @author Hibernate CodeGenerator */
public class Blobtest implements Serializable {

/** identifier field */
private String bid;

/** nullable persistent field */
private Blob bcontent;

/** full constructor */
public Blobtest(Blob bcontent) {
this.bcontent = bcontent;
}

/** default constructor */
public Blobtest() {
}

public java.lang.String getBid() {
return this.bid;
}

public void setBid(java.lang.String bid) {
this.bid = bid;
}

public Blob getBcontent() {
return this.bcontent;
}

public void setBcontent(Blob bcontent) {
this.bcontent = bcontent;
}

public String toString() {
return new ToStringBuilder(this)
.append("bid", getBid())
.toString();
}

public boolean equals(Object other) {
if ( !(other instanceof Blobtest) ) return false;
Blobtest castOther = (Blobtest) other;
return new EqualsBuilder()
.append(this.getBid(), castOther.getBid())
.isEquals();
}

public int hashCode() {
return new HashCodeBuilder()
.append(getBid())
.toHashCode();
}

}

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 2.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping>
<class name="com.sunix.Blobtest" schema="LIUXU" table="BLOBTEST">
<id column="BID" name="bid" type="string">
<generator class="uuid.string"/>
</id>
<property column="BCONTENT" name="bcontent" type="blob"/>
</class>
</hibernate-mapping>

管理SESSION的那个就不贴了，是从LIFERAY里COPY出来的
下面这个是用来写Blob的类
package com.sunix;
import net.sf.hibernate.HibernateException;
import net.sf.hibernate.Session;
import net.sf.hibernate.*;
import net.sf.hibernate.SessionFactory;
import net.sf.hibernate.cfg.Configuration;
import com.sunix.Blobtest;
import com.sunix.hibernate.*;

public class testBlob {
private Session session=null;
public testBlob() {
}
public void add(String _content){
try{
session=hibernatesession.openSession();
Blobtest bt=new Blobtest();
//之所以这么写BLOB是因为我在HIBERNATE的TEST的原码中看到的
bt.setBcontent(Hibernate.createBlob(_content.getBytes()));
session.save(bt);
session.flush();
}catch(Exception ex){
ex.printStackTrace();
System.out.println(ex.getMessage());
}
finally {
hibernatesession.closeSession(session);
}

}
}

日志：

2003-8-25 15:51:44 net.sf.hibernate.cfg.Environment <clinit>

信息: using java.io streams to persist binary types

2003-8-25 15:51:44 net.sf.hibernate.cfg.Environment <clinit>

信息: using CGLIB reflection optimizer

2003-8-25 15:51:44 net.sf.hibernate.cfg.Environment <clinit>

信息: JVM proxy support: true

2003-8-25 15:51:44 net.sf.hibernate.cfg.Configuration addClass

信息: Mapping resource: com/sunix/Blobtest.hbm.xml

2003-8-25 15:51:45 net.sf.hibernate.cfg.Binder bindRootClass

信息: Mapping class: com.sunix.Blobtest -> BLOBTEST

2003-8-25 15:51:46 net.sf.hibernate.cfg.Configuration secondPassCompile

信息: processing one-to-many association mappings

2003-8-25 15:51:46 net.sf.hibernate.cfg.Configuration secondPassCompile

信息: processing one-to-one association property references

2003-8-25 15:51:46 net.sf.hibernate.cfg.Configuration secondPassCompile

信息: processing foreign key constraints

2003-8-25 15:51:46 net.sf.hibernate.impl.SessionFactoryImpl <init>

信息: building session factory

2003-8-25 15:51:46 net.sf.hibernate.dialect.Dialect <init>

信息: Using dialect: net.sf.hibernate.dialect.OracleDialect

2003-8-25 15:51:46 net.sf.hibernate.cfg.SettingsFactory buildSettings

信息: Use outer join fetching: true

2003-8-25 15:51:46 net.sf.hibernate.connection.DriverManagerConnectionProvider configure

信息: Hibernate connection pool size: 20

2003-8-25 15:51:47 net.sf.hibernate.cfg.SettingsFactory buildSettings

信息: Use scrollable result sets: true

2003-8-25 15:51:47 net.sf.hibernate.cfg.SettingsFactory buildSettings

信息: JDBC 2 max batch size: 15

2003-8-25 15:51:47 net.sf.hibernate.cfg.SettingsFactory buildSettings

信息: echoing all SQL to stdout

2003-8-25 15:51:47 net.sf.hibernate.cfg.SettingsFactory buildSettings

信息: Query language substitutions: {}

2003-8-25 15:51:47 net.sf.hibernate.ps.PreparedStatementCache <init>

信息: prepared statement cache size: 6

2003-8-25 15:51:48 net.sf.hibernate.impl.SessionFactoryObjectFactory addInstance

信息: no JNDI name configured

Hibernate: insert into ll.BLOBTEST (BCONTENT, BID) values (?, ?)