hibernate.cfg.xml 加载映射文件有，tomcat无法启动

Question

<property name="hibernate.dialect">
org.hibernate.dialect.SQLServerDialect
</property>
<property name="hibernate.show_sql">true</property>
<mapping resource="com/pro/models/Users.hbm.xml" />
<mapping resource="com/pro/models/Admin.hbm.xml" />
<mapping resource="com/pro/models/Car.hbm.xml" />
<mapping resource="com/pro/vo/UsercarCar.hbm.xml" />  //加入这一行就会出错，这个是视图出错信息：
 ERROR (org.springframework.web.context.ContextLoader:215) - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [applicationContext_user.xml]: Invocation of init method failed; nested exception is org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]UsercarCar.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
-->
<hibernate-mapping package="com.pro.vo">
    <class name="UsercarCar" table="usercarcar" lazy="false">
       
             <id name="mid">
<generator class="native"></generator>
            </id>
            <property name="carid" type="java.lang.String">
                <column name="carid" length="50" />
            </property>
            <property name="userid" type="java.lang.String">
                <column name="userid" length="50" />
            </property>
            <property name="gpssn" type="java.lang.String">
                <column name="gpssn" length="12" />
            </property>
            <property name="minv" type="java.lang.Short">
                <column name="minv" />
            </property>
            <property name="sim" type="java.lang.String">
                <column name="sim" length="50" />
            </property>
            <property name="creattime" type="java.sql.Timestamp">
                <column name="creattime" length="23" />
            </property>
            <property name="authphones" type="java.lang.String">
                <column name="authphones" length="50" />
            </property>
            <property name="rectregions" type="java.lang.String">
                <column name="rectregions" length="50" />
            </property>
            <property name="name" type="java.lang.String">
                <column name="name" length="50" />
            </property>
            <property name="location" type="java.lang.String">
                <column name="location" length="50" />
            </property>
            <property name="gprsLasttime" type="java.sql.Timestamp">
                <column name="GPRS_lasttime" length="23" />
            </property>
            <property name="gpsLasttime" type="java.sql.Timestamp">
                <column name="GPS_lasttime" length="23" />
            </property>
            <property name="fixdata" type="java.lang.String">
                <column name="fixdata" length="50" />
            </property>
            <property name="carmid" type="java.lang.Long">
                <column name="carmid" />
            </property>
            <property name="curpostime" type="java.lang.String">
                <column name="curpostime" length="17" />
            </property>
            <property name="latitude" type="java.lang.String">
                <column name="latitude" length="12" />
            </property>
            <property name="longitude" type="java.lang.String">
                <column name="longitude" length="10" />
            </property>
            <property name="speed" type="java.lang.String">
                <column name="speed" length="5" />
            </property>
            <property name="mileage" type="java.lang.String">
                <column name="mileage" length="16" />
            </property>
            <property name="acctime" type="java.lang.String">
                <column name="acctime" length="8" />
            </property>
            <property name="code" type="java.lang.String">
                <column name="code" length="10" />
            </property>
            <property name="direction" type="java.lang.String">
                <column name="direction" length="5" />
            </property>
            <property name="overspeed" type="java.lang.Short">
                <column name="overspeed" />
            </property>
            <property name="flag" type="java.lang.String">
                <column name="flag" length="8" />
            </property>
            <property name="property" type="java.lang.String">
                <column name="property" length="8" />
            </property>
            <property name="fuel" type="java.lang.String">
                <column name="fuel" length="4" />
            </property>
            <property name="gpstype" type="java.lang.String">
                <column name="gpstype" length="2" />
            </property>
       
    </class>
</hibernate-mapping>

Answer 1

检查UsercarCar.hbm.xml与对应的实体类UsercarCar里面的字段是否一一对应，并且有相应的get/set方法

Answer 2

我用视图配置hibernate时，是选几个能够唯一确定视图中一行记录的几个字段作为联合主键，然后就可以按照正常的hibernate配置进行操作了

Answer 3

我用了联合主键，问题依旧<?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 package="com.pro.vo">
    <class name="UsercarCar" table="usercarcar" lazy="false">
     <composite-id name="uc" class="user_car">
<key-property name="mid" type="int"></key-property>
<key-property name="carid" type="string"></key-property>
<key-property name="userid" type="string"></key-property>
<key-property name="gpssn" type="string"></key-property>
</composite-id>            <property name="minv" type="java.lang.Short">
                <column name="minv" />
            </property>
            <property name="sim" type="java.lang.String">
                <column name="sim" length="50" />
            </property>
            <property name="creattime" type="java.sql.Timestamp">
                <column name="creattime" length="23" />
            </property>
            <property name="authphones" type="java.lang.String">
                <column name="authphones" length="50" />
            </property>
            <property name="rectregions" type="java.lang.String">
                <column name="rectregions" length="50" />
            </property>
            <property name="name" type="java.lang.String">
                <column name="name" length="50" />
            </property>
            <property name="location" type="java.lang.String">
                <column name="location" length="50" />
            </property>
            <property name="gprsLasttime" type="java.sql.Timestamp">
                <column name="GPRS_lasttime" length="23" />
            </property>
            <property name="gpsLasttime" type="java.sql.Timestamp">
                <column name="GPS_lasttime" length="23" />
            </property>
            <property name="fixdata" type="java.lang.String">
                <column name="fixdata" length="50" />
            </property>
            <property name="carmid" type="java.lang.Long">
                <column name="carmid" />
            </property>
            <property name="curpostime" type="java.lang.String">
                <column name="curpostime" length="17" />
            </property>
            <property name="latitude" type="java.lang.String">
                <column name="latitude" length="12" />
            </property>
            <property name="longitude" type="java.lang.String">
                <column name="longitude" length="10" />
            </property>
            <property name="speed" type="java.lang.String">
                <column name="speed" length="5" />
            </property>
            <property name="mileage" type="java.lang.String">
                <column name="mileage" length="16" />
            </property>
            <property name="acctime" type="java.lang.String">
                <column name="acctime" length="8" />
            </property>
            <property name="code" type="java.lang.String">
                <column name="code" length="10" />
            </property>
            <property name="direction" type="java.lang.String">
                <column name="direction" length="5" />
            </property>
            <property name="overspeed" type="java.lang.Short">
                <column name="overspeed" />
            </property>
            <property name="flag" type="java.lang.String">
                <column name="flag" length="8" />
            </property>
            <property name="property" type="java.lang.String">
                <column name="property" length="8" />
            </property>
            <property name="fuel" type="java.lang.String">
                <column name="fuel" length="4" />
            </property>
            <property name="gpstype" type="java.lang.String">
                <column name="gpstype" length="2" />
            </property>
       
    </class>
</hibernate-mapping>

Answer 4

lib中有没有 javassist.jar ？如果有，那么是你的hbm.xml出错了记得 bean类，一定要有默认的构造函数，即不带参数的构造函数

Answer 5

 有javassist.jar   bean 类也都有加默认的构造函数
 hbm.xml哪里出错了？求指点

Answer 6

检查UsercarCar.hbm.xml与对应的实体类UsercarCar里面的字段是否一一对应

Answer 7

有可能实体类中的XX属性和getXX方法对不上，检查后，重新generate getters and setters就可以了。

Answer 8

仔细检查UsercarCar.hbm.xml与对应的实体类UsercarCar里面的字段是否一一对应包括类型是否对应。

Answer 9

联合主键需要重写hashcode方法和equals方法