框架中，获取spring的配置文件解析失败

利用ssm框架完成一个表简单的增删改查

<!--导入 dao 的配置文件-->
<import resource="classpath:spring-dao.xml"/>

<!--ioc扫描器-->
<context:component-scan base-package="com.bjpowernode.service"/>

<!--配置aop 事务-->

<!--事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
     <property name="dataSource" ref="dataSource"/>
</bean>
<!--增强类-->
<tx:advice id="advice" transaction-manager="transactionManager">
    <tx:attributes>
        <tx:method name="query*" read-only="true"/>
        <tx:method name="find*" read-only="true"/>
        <tx:method name="select*" read-only="true"/>
        <tx:method name="get*" read-only="true"/>
        <tx:method name="list*" read-only="true"/>
        <tx:method name="*" propagation="REQUIRED" isolation="DEFAULT"/>
    </tx:attributes>
</tx:advice>
<!--aopconfig-->
<aop:config>
    <aop:pointcut id="pointcut" expression="execution(* com.bjpowernode.service.impl.*Impl.*(..))"/>
    <aop:advisor advice-ref="advice" pointcut-ref="pointcut"/>
</aop:config>

运行结果及报错内容

org.springframework.beans.factory.BeanDefinitionStoreException: Unexpected exception parsing XML document from class path resource [spring-context.xml]; nested exception is java.lang.NoClassDefFoundError: Could not initialize class com.sun.org.apache.xerces.internal.impl.xs.SchemaGrammar
org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:420)
org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:337)
org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:305)
org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188)
org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:224)
org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:195)
org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:125)
org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions(XmlWebApplicationContext.java:94)
org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:133)
org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:637)
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:522)
org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:702)
org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:668)
org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:716)
org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:591)
org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:530)
org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:170)
javax.servlet.GenericServlet.init(GenericServlet.java:158)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:367)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:860)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1598)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:745)

我的解答思路和尝试过的方法

更改过头文件，换过tomcat