spring+hibernate配置自动生成数据库表，总是不成功？？
applicationContext.xml里的配置如下：
<bean id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName"
value="com.mysql.jdbc.Driver">
</property>
<property name="url" value="jdbc:mysql://localhost:3306/test"></property>
<property name="username" value="root"></property>
<property name="password" value="admin"></property>
</bean>


<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>
<prop key="hibernate.show_sql">true</prop>
     <prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">create</prop>
</props>
    
</property>
<property name="mappingResources">
<list>
<value>com/wenruijie/dao/Users.hbm.xml</value>
</list>
</property>

com/wenruijie/dao/Users.hbm.xml里的配置如下：
<?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="com.wenruijie.dao.Users" table="usersb" catalog="health">
        <id name="id" type="java.lang.String">
            <column name="id" />
            <generator class="native"></generator>
        </id>
        <property name="name" type="java.lang.String">
            <column name="Name" />
        </property>
        <property name="password" type="java.lang.String">
            <column name="Password" />
        </property>
      
    </class>
</hibernate-mapping>
访问时不能自动生成table表，还出现如下错误
org.springframework.dao.InvalidDataAccessResourceUsageException: could not insert: [com.wenruijie.dao.Users]; SQL [insert into health.usersb (Name, Password) values (?, ?)]; nested exception is org.hibernate.exception.SQLGrammarException: could not insert: [com.wenruijie.dao.Users]
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