spring mvc找不到jar包问题

Referenced Libraries这个中引入了spring.jar包

web.xml配置如下：

<?xml version="1.0" encoding="UTF-8"?>  
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">  
  <display-name>s3h3</display-name>  
   <context-param>    
     <param-name>contextConfigLocation</param-name>    
     <param-value>classpath:applicationContext*.xml</param-value>    
 </context-param>    
  <listener>    
     <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    
 </listener>    
 
 <servlet>    
     <servlet-name>spring</servlet-name>    
     <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    
     <load-on-startup>1</load-on-startup>    
 </servlet>    
 <servlet-mapping>    
     <servlet-name>spring</servlet-name>  <!-- 这里在配成spring,下边也要写一个名为spring-servlet.xml的文件，主要用来配置它的controller -->  
     <url-pattern>*.do</url-pattern>    
 </servlet-mapping>    
  <welcome-file-list>  
    <welcome-file>index.jsp</welcome-file>  
  </welcome-file-list>  
</web-app> 

但是还是会报错：

 context: /text2
  delegate: false
  repositories:
    /WEB-INF/classes/
----------> Parent Classloader:
org.apache.catalina.loader.StandardClassLoader@1a8c4e7
 org.springframework.web.servlet.DispatcherServlet
java.lang.ClassNotFoundException: org.springframework.web.servlet.DispatcherServlet

求高手解答，刚刚学着配置一下spring环境