我是spring和hibernate的新手，我正在尝试从spring+hibernate应用程序连接mysql数据库。但不幸的是，我得到下面的错误。试图解决这个问题，但没有得到正确的解决方案。
spring-hibernate版本信息

<properties>
    <spring.version>4.2.1.RELEASE</spring.version>
    <security.version>4.0.3.RELEASE</security.version>
    <jdk.version>1.8</jdk.version>
    <hibernate.version>4.3.5.Final</hibernate.version>
    <org.aspectj-version>1.7.4</org.aspectj-version>
</properties>

<beans:bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
    destroy-method="close">
    <beans:property name="driverClassName" value="com.mysql.jdbc.Driver" />
    <beans:property name="url"
        value="jdbc:mysql://localhost:3306/springmvchibernate"/>
    <beans:property name="username" value="root" />
    <beans:property name="password" value="mysql12345" />
</beans:bean>

<!-- Hibernate 4 SessionFactory Bean definition -->
<beans:bean id="hibernate4AnnotatedSessionFactory"
    class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <beans:property name="dataSource" ref="dataSource" />
    <beans:property name="annotatedClasses">
        <beans:list>
            <beans:value>**</beans:value>
        </beans:list>
    </beans:property>
    <beans:property name="hibernateProperties">
        <beans:props>
            <beans:prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect
            </beans:prop>
            <beans:prop key="hibernate.show_sql">true</beans:prop>
        </beans:props>
    </beans:property>
</beans:bean>

<context:component-scan base-package="org.**" />

<tx:annotation-driven transaction-manager="transactionManager" />

<beans:bean id="transactionManager"
    class="org.springframework.orm.hibernate4.HibernateTransactionManager">
    <beans:property name="sessionFactory"
        ref="hibernate4AnnotatedSessionFactory" />
</beans:bean>

消息请求处理失败；嵌套异常为org.springframework.transaction.cannotcreatetransactionexception:无法打开事务的hibernate会话；嵌套异常为org.hibernate.exception.genericjdbception:无法打开连接
说明服务器遇到意外情况，无法完成请求。
例外
org.springframework.web.util.nestedservletexception:请求处理失败；嵌套异常为org.springframework.transaction.cannotcreatetransactionexception:无法打开事务的hibernate会话；嵌套异常为org.hibernate.exception.genericjdbception:无法打开连接org.springframework.web.servlet.frameworkservlet.processrequest（frameworkservlet）。java:982)org.springframework.web.servlet.frameworkservlet.doget（frameworkservlet。java:861)javax.servlet.http.httpservlet.service（httpservlet）。java:635) org.springframework.web.servlet.frameworkservlet.service（frameworkservlet。java:846)javax.servlet.http.httpservlet.service（httpservlet）。java:742)org.apache.tomcat.websocket.server.wsfilter.dofilter（wsfilter。java:52)根本原因
org.springframework.transaction.cannotcreatetransactionexception:无法打开事务的hibernate会话；嵌套异常为org.hibernate.exception.genericjdbception:无法打开连接org.springframework.orm.hibernate4.hibernatetransactionmanager.dobegin（hibernatetransactionmanager）。java:544)org.springframework.transaction.support.abstractplatformtransactionmanager.gettransaction（abstractplatformtransactionmanager）。java:373) org.springframework.transaction.interceptor.transactionspectsupport.createtransactionifnecessable（transactionspectsupport。java:427)org.springframework.transaction.interceptor.transactionspectsupport.invokewithintransaction（transactionspectsupport。java:276) org.springframework.transaction.interceptor.transactioninterceptor.invoke（transactioninterceptor。java:96)org.springframework.aop.framework.reflectivemethodinvocation.procedue（reflectivemethodinvocation。java:179)org.springframework.aop.framework.cglibaopproxy$dynamicadvisedinterceptor.intercept（cglibaopproxy。java:653) org.arpit.java2blog.service.countryservice$$enhancerbyspringcglib$$77d6eaf4.getallcountries（）org.arpit.java2blog.controller.countrycontroller.getcountries（countrycontroller。java:26)sun.reflect.nativemethodaccessorimpl.invoke0（本机方法）sun.reflect.nativemethodaccessorimpl.invoke（nativemethodaccessorimpl）。java:62) sun.reflect.delegatingmethodaccessorimpl.invoke（delegatingmethodaccessorimpl。java:43)java.lang.reflect.method.invoke（方法。java:498)