帮忙看一下是哪的错

折腾了好几天了还没解决，帮忙看一下吧，谢谢了错误信息：
Caused by: org.hibernate.InvalidMappingException: Could not parse mapping document from resource com\zhao\oa\model\Person.hbm.xml
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXml(Configuration.java:4009)
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXmlQueue(Configuration.java:3998)
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processMetadata(Configuration.java:3986)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1398)
at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1375)
at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:717)
at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:211)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1460)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1398)
... 23 more
Caused by: org.hibernate.PropertyNotFoundException: field [org] not found on com.zhao.oa.model.Person
at org.hibernate.property.DirectPropertyAccessor.getField(DirectPropertyAccessor.java:182)
at org.hibernate.property.DirectPropertyAccessor.getField(DirectPropertyAccessor.java:174)
at org.hibernate.property.DirectPropertyAccessor.getGetter(DirectPropertyAccessor.java:197)
at org.hibernate.util.ReflectHelper.getter(ReflectHelper.java:241)
at org.hibernate.util.ReflectHelper.reflectedPropertyClass(ReflectHelper.java:229)
at org.hibernate.mapping.ToOne.setTypeUsingReflection(ToOne.java:81)
at org.hibernate.cfg.HbmBinder.createProperty(HbmBinder.java:2297)
at org.hibernate.cfg.HbmBinder.createClassProperties(HbmBinder.java:2274)
at org.hibernate.cfg.HbmBinder.createClassProperties(HbmBinder.java:2164)
at org.hibernate.cfg.HbmBinder.bindRootPersistentClassCommonValues(HbmBinder.java:412)
at org.hibernate.cfg.HbmBinder.bindRootClass(HbmBinder.java:326)
at org.hibernate.cfg.HbmBinder.bindRoot(HbmBinder.java:177)
at org.hibernate.cfg.Configuration$MetadataSourceQueue.processHbmXml(Configuration.java:4006)
... 31 more
Person.hbm.xml配置文件：
<?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="com.zhao.oa.model.Person" table="t_person" >
<id name="id">
<generator class="native"/>
</id>
<property name="name"/>
<property name="sex"/>
<property name="age"/>
<property name="address"/>
<property name="duty"/>
<property name="phone"/>
<many-to-one name="org"></many-to-one>
    </class>

</hibernate-mapping>Person实体类：
public class Person {
    private int id;
    private String name;
    private int age;
    private String sex;
    private String address;
    private String duty;
    private String phone;
    private Organization  organization;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getDuty() {
return duty;
}
public void setDuty(String duty) {
this.duty = duty;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public Organization getOrganization() {
return organization;
}
public void setOrganization(Organization organization) {
this.organization = organization;
}
    
    
}