Hibernate中的懒加载异常

Question

ERROR LazyInitializationException:19 - could not initialize proxy - no Session我把<many-to-one>端的lazay已经设为了false，怎么还出现这个异常啊，有会的教下我，谢谢

Answer 1

dao代码:       /**
 * 根据任务ID查询
 * @param task_id
 * @return
 */
public Task get(int task_id) 
{

return (Task)getHibernateTemplate().load(Task.class, task_id);
}
测试代码:        @Test
public void testSel()
{
Task t = dao.get(1);
System.out.println(t.getType()); //根据id来查询Task的相关信息时会有could not 
                                                   initialize proxy - no Session 抛出 }
task.hbm.xml <class name="com.om.fee.model.Task" table="task" catalog="om">
        <id name="task_id" type="java.lang.Integer">
            <column name="task_id" />
            <generator class="native"></generator>
        </id>
        <property name="reason" type="java.lang.String">
            <column name="reason" length="65535" />
        </property>
        <property name="type" type="java.lang.String">
            <column name="type" length="30" />
        </property>
        <property name="start_time" type="java.util.Date">
            <column name="start_time" length="10" />
        </property>
        <property name="end_time" type="java.util.Date">
            <column name="end_time" length="10" />
        </property>
        <set name="fees" inverse="true">
            <key>
                <column name="task_id" not-null="true"/>
            </key>
            <one-to-many class="com.om.fee.model.Fee"/>
        </set>
    </class>
fee.hbm.xml<class name="com.om.fee.model.Fee" table="fee" catalog="om">
        <id name="fee_id" type="java.lang.Integer">
            <column name="fee_id" />
            <generator class="native"></generator>
        </id>
      
       <many-to-one name="task" column="task_id" class="com.om.fee.model.Task" not-null="true" lazy="false">
       </many-to-one>
        <property name="proposer" type="java.lang.String">
            <column name="proposer" length="20" />
        </property>
        <property name="department" type="java.lang.String">
            <column name="department" />
        </property>
        <property name="reason" type="java.lang.String">
            <column name="reason" length="500" />
        </property>
        <property name="money" type="java.lang.Float">
            <column name="money" precision="12" scale="0" />
        </property>
        <property name="actual_money" type="java.lang.Long">
            <column name="actual_money" precision="12" scale="0" />
        </property>
        <property name="time" type="java.sql.Date">
            <column name="time" length="10" />
        </property>
        <property name="approver" type="java.lang.String">
            <column name="approver" length="10" />
        </property>
        <property name="note" type="java.lang.String">
            <column name="note" length="500" />
        </property>
    </class>task 和 fee是1:N关系