其他功能目前还正常 涉及到ClassRoom就开始了出现这种问题 一般在哪里找错误呢? application.xml 和 xxx.hbm.xml ?
我这2处都找了 没发现什么问题啊。在 application.xml 中已经有这个映射了啊
....
....
.... <bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource" />
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
</props>
</property>
<property name="mappingResources">
<list>
<value>emp/dao/Menu.hbm.xml</value>
<value>emp/dao/Major.hbm.xml</value>
<value>emp/dao/Essay.hbm.xml</value>
<value>emp/dao/Prize.hbm.xml</value>
<value>emp/dao/User.hbm.xml</value>
<value>emp/dao/Url.hbm.xml</value>
<value>emp/dao/Tea.hbm.xml</value>
<value>emp/dao/Course.hbm.xml</value>
<value>emp/dao/ClassRoom.hbm.xml</value> <!-- OK! -->
<value>emp/dao/Dept.hbm.xml</value>
<value>emp/dao/Research.hbm.xml</value>
<value>emp/dao/Role.hbm.xml</value>
<value>emp/dao/FurStudy.hbm.xml</value>
<value>emp/dao/Stu.hbm.xml</value>
</list>
</property>
</bean>.....
....
..然后是 ClassRoomhbm.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
-->
<hibernate-mapping>
<class name="emp.dao.ClassRoom" table="tb_classroom" catalog="db_role"> <!-- 这里包名设置也是正确的 -->
<id name="classId" type="java.lang.Integer">
<column name="classID" />
<generator class="native"></generator>
</id>
<many-to-one name="major" class="emp.dao.Major" fetch="select" lazy="false">
<column name="majorID" />
</many-to-one>
<property name="className" type="java.lang.String">
<column name="className" length="32" />
</property>
<set name="courses" inverse="true" lazy="false">
<key>
<column name="classID" />
</key>
<one-to-many class="emp.dao.Course" />
</set>
<set name="stus" inverse="true" lazy="false">
<key>
<column name="classID" />
</key>
<one-to-many class="emp.dao.Stu" />
</set>
</class>
</hibernate-mapping>
我这2处都找了 没发现什么问题啊。在 application.xml 中已经有这个映射了啊
....
....
.... <bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource" />
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
</props>
</property>
<property name="mappingResources">
<list>
<value>emp/dao/Menu.hbm.xml</value>
<value>emp/dao/Major.hbm.xml</value>
<value>emp/dao/Essay.hbm.xml</value>
<value>emp/dao/Prize.hbm.xml</value>
<value>emp/dao/User.hbm.xml</value>
<value>emp/dao/Url.hbm.xml</value>
<value>emp/dao/Tea.hbm.xml</value>
<value>emp/dao/Course.hbm.xml</value>
<value>emp/dao/ClassRoom.hbm.xml</value> <!-- OK! -->
<value>emp/dao/Dept.hbm.xml</value>
<value>emp/dao/Research.hbm.xml</value>
<value>emp/dao/Role.hbm.xml</value>
<value>emp/dao/FurStudy.hbm.xml</value>
<value>emp/dao/Stu.hbm.xml</value>
</list>
</property>
</bean>.....
....
..然后是 ClassRoomhbm.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
-->
<hibernate-mapping>
<class name="emp.dao.ClassRoom" table="tb_classroom" catalog="db_role"> <!-- 这里包名设置也是正确的 -->
<id name="classId" type="java.lang.Integer">
<column name="classID" />
<generator class="native"></generator>
</id>
<many-to-one name="major" class="emp.dao.Major" fetch="select" lazy="false">
<column name="majorID" />
</many-to-one>
<property name="className" type="java.lang.String">
<column name="className" length="32" />
</property>
<set name="courses" inverse="true" lazy="false">
<key>
<column name="classID" />
</key>
<one-to-many class="emp.dao.Course" />
</set>
<set name="stus" inverse="true" lazy="false">
<key>
<column name="classID" />
</key>
<one-to-many class="emp.dao.Stu" />
</set>
</class>
</hibernate-mapping>
在ClassRoomDAO的findById中 类前面都没有emp.dao.真是怪异啊, 机器自动翻转的, 怎么会丢了呢?