SSH项目练习的时候报错：[applicationContext.xml]: Invocation of init method failed;

这里是控制台的报错信息：
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [applicationContext.xml]: Invocation of init method failed; nested exception is org.hibernate.MappingException: could not instantiate id generator [entity-name=com.tes.entity.Cost]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1338)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:473)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:409)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:423)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:728)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:380)
    at org.springframework.web.context.ContextLoader.createWebApplicationContext(ContextLoader.java:255)
    at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:199)
    at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:45)
    at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4729)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5167)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1399)
    at java.util.concurrent.FutureTask.run(FutureTask.java:262)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
Caused by: org.hibernate.MappingException: could not instantiate id generator [entity-name=com.tes.entity.Cost]
    at org.hibernate.id.IdentifierGeneratorFactory.create(IdentifierGeneratorFactory.java:109)
    at org.hibernate.mapping.SimpleValue.createIdentifierGenerator(SimpleValue.java:152)
    at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:197)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1313)
    at org.springframework.orm.hibernate3.LocalSessionFactoryBean.newSessionFactory(LocalSessionFactoryBean.java:814)
    at org.springframework.orm.hibernate3.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:732)
    at org.springframework.orm.hibernate3.AbstractSessionFactoryBean.afterPropertiesSet(AbstractSessionFactoryBean.java:211)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1369)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1335)
    ... 24 more
Caused by: org.hibernate.MappingException: Dialect does not support sequences
    at org.hibernate.dialect.Dialect.getSequenceNextValString(Dialect.java:619)
    at org.hibernate.id.SequenceGenerator.configure(SequenceGenerator.java:65)
    at org.hibernate.id.IdentifierGeneratorFactory.create(IdentifierGeneratorFactory.java:104)
    ... 32 more

下面是applicationContext.xml文件信息：

<!-- 配置SessionFactory -->
<bean id="sessionFactory" 
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<!-- 依赖数据源 -->
<property name="dataSource" ref="db"/>
<!-- Hibernate框架相关配置 -->
<property name="hibernateProperties">
<props>
<!-- 配置数据库方言 -->
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
<!-- 显示SQL --> 
<prop key="hibernate.show_sql">true</prop>
<!-- 格式化SQL --> 
<prop key="hibernate.formate_sql">true</prop>

<!-- 查询缓存 
<prop key="hibernate.cache.use_query_cache">true</prop> 
//二级缓存 
<prop key="hibernate.cache.use_second_level_cache">false</prop> 
--> 
</props>
</property>
<property name="mappingResources">
<list>
<value>com/tes/entity/Cost.hbm.xml</value>
</list>
</property>
</bean>