SSH三大框架整合项目中的错误

Question

错误（并不是int非包装类型之类的问题）：HTTP Status 500 - exception setting property value with CGLIB (set hibernate.cglib.use_reflection_optimizer=false for more info) setter of com.qst.giftems.gift.pojos.TGift.setTypeId; nested exception is org.hibernate.PropertyAccessException: exception setting property value with CGLIB (set hibernate.cglib.use_reflection_optimizer=false for more info) setter of com.qst.giftems.gift.pojos.TGift.setTypeIdTGift.javapackage com.qst.giftems.gift.pojos;public class TGift { private Integer id; private Integer typeId; private Integer sales; private String pic; private TGiftType type; /** 款式集合 **/ private List<TGiftStyle> styles = new ArrayList<TGiftStyle>(); //用户集合 private Set<TUser> users = new HashSet<TUser>(); public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public Integer getTypeId() { return typeId; } public void setTypeId(Integer typeId) { this.typeId = typeId; } public Integer getSales() { return sales; } public void setSales(Integer sales) { this.sales = sales; } public String getPic() { return pic; } public void setPic(String pic) { this.pic = pic; } public TGiftType getType() { return type; } public void setType(TGiftType type) { this.type = type; } public List<TGiftStyle> getStyles() { return styles; } public void setStyles(List<TGiftStyle> styles) { this.styles = styles; } public Set<TUser> getUsers() { return users; } public void setUsers(Set<TUser> users) { this.users = users; }}TGift.hbm.xml <?xml version="1.0" encoding="utf-8"?> <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <!--    Mapping file autogenerated by MyEclipse Persistence Tools--> <!--  dynamic-insert="true" dynamic-update="true" --> <hibernate-mapping>    <class name="com.qst.giftems.gift.pojos.TGift" table="t_gift" catalog="gift_ems" lazy="false" >         <id name="id" type="java.lang.Integer">            <column name="id" />            <generator class="native" />        </id>        <many-to-one name="typeId" class="com.qst.giftems.gift.pojos.TGiftType" fetch="select">            <column name="type_id" not-null="false">                <comment>类型ID</comment>            </column>        </many-to-one>        <property name="sales" type="java.lang.Integer">            <column name="sales">                <comment>该商品销售数量 </comment>            </column>        </property>        <property name="pic" type="java.lang.String">            <column name="pic" />        </property>        <!-- 配置与TUser的多对多关联关系 -->        <set name="users" table="t_user_cart">            <key>                <column name="gift_id" >                    <comment>礼品ID</comment>                </column>            </key>            <many-to-many class="com.qst.giftems.user.pojos.TUser" column="user_id"/>        </set>        <set name="styles" inverse="true">            <key>                <column name="gift_id" not-null="true">                    <comment>礼品ID</comment>                </column>            </key>            <one-to-many class="com.qst.giftems.gift.pojos.TGiftStyle" />        </set>     </class> </hibernate-mapping>