请帮助Hibernate exception

请看以下报错：
org.hibernate.MappingException: An association from the table device refers to an unmapped class: int
at org.hibernate.cfg.Configuration.secondPassCompileForeignKeys(Configuration.java:1134)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1052)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1168)
at com.macroview.sztvip.PersistenceUtil.<clinit>(PersistenceUtil.java:13)
检查了好几次.sql,.hbm.xml和.java 实在不知道问题出在哪里，请帮忙指正，谢谢。
Device.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 package="com.macroview.abt">
<class name="Device" table="device">
<id name="deviceId" column="device_id">
</id>
<property name="deviceName" column="device_name"/>
<property name="deviceSite" column="device_site"/>
<property name="deviceBrand" column="device_brand"/>
<property name="deviceType" column="device_type"/>
<property name="deviceModel" column="device_model"/>
<property name="deviceIp" column="device_ip"/>
<property name="snmpRo" column="snmp_ro"/>
<property name="snmpRw" column="snmp_rw"/>
<property name="showVer" column="show_ver"/>
<many-to-one name="officeId" column="office_id" not-null="true" lazy="false" update="false"/>
</class>
</hibernate-mapping>

Device.java
package com.macroview.abt;
public class Device {
private int officeId;
private int deviceId;
private String deviceName;
private String deviceSite;
private String deviceBrand;
private String deviceType;
private String deviceModel;
private String deviceIp;
private String snmpRo;
private String snmpRw;
private String showVer;

public Device()
{
}

public int getOfficeId()
{
return officeId;
}
public void setOfficeId(int officeId)
{
this.officeId = officeId;
}
public int getDeviceId()
{
return deviceId;
}
public void setDeviceId(int deviceId)
{
this.deviceId = deviceId;
}
public String getDeviceName()
{
return deviceName;
}
public void setDeviceName(String deviceName)
{
this.deviceName = deviceName;
}
public String getDeviceSite()
{
return deviceSite;
}
public void setDeviceSite(String deviceSite)
{
this.deviceSite = deviceSite;
}
public String getDeviceBrand()
{
return deviceBrand;
}
public void setDeviceBrand(String deviceBrand)
{
this.deviceBrand = deviceBrand;
}
public String getDeviceType()
{
return deviceType;
}
public void setDeviceType(String deviceType)
{
this.deviceType = deviceType;
}
public String getDeviceModel()
{
return deviceModel;
}
public void setDeviceModel(String deviceModel)
{
this.deviceModel = deviceModel;
}
public String getDeviceIp()
{
return deviceIp;
}
public void setDeviceIp(String deviceIp)
{
this.deviceIp = deviceIp;
}
public String getSnmpRo()
{
return snmpRo;
}
public void setSnmpRo(String snmpRo)
{
this.snmpRo = snmpRo;
}
public String getSnmpRw()
{
return snmpRw;
}
public void setSnmpRw(String snmpRw)
{
this.snmpRw = snmpRw;
}
public String getShowVer()
{
return showVer;
}
public void setShowVer(String showVer)
{
this.showVer = showVer;
}
}

device.sql
DROP TABLE IF EXISTS `device`;
CREATE TABLE `device` (
`office_id` INT(10) UNSIGNED NOT NULL,
`device_id` INT(10) UNSIGNED NOT NULL,
`device_name` VARCHAR(45) NOT NULL default '',
`device_site` VARCHAR(20) NOT NULL default '',
`device_brand` VARCHAR(20) NOT NULL default '',
`device_type` VARCHAR(20) NOT NULL default '',
`device_model` VARCHAR(20) NOT NULL default '',
`device_ip` VARCHAR(20) NOT NULL default '',
`snmp_ro` VARCHAR(10) NOT NULL default '',
`snmp_rw` VARCHAR(10) NOT NULL default '',
`show_ver` TINYTEXT NOT NULL DEFAULT '',
PRIMARY KEY (`device_id`),
KEY `FK_office` (`office_id`),
CONSTRAINT `FK_office` FOREIGN KEY (`office_id`) REFERENCES `office` (`office_id`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=gb2312;

顶下...

谢。。

<class name="Device" table="device">

==>

<class name="com.macroview.abt.Device" table="device">

没有指定主键的生成方式吧？