<!-- spring-mvc -->

    <servlet>

        <servlet-name>springServlet</servlet-name>

        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

        <init-param>

            <param-name>contextConfigLocation</param-name>

            <param-value>classpath:springmvc-servlet.xml</param-value>

        </init-param>

        <load-on-startup>1</load-on-startup>

    </servlet>

    <servlet-mapping>

        <servlet-name>springServlet</servlet-name>

        <url-pattern>/</url-pattern>

    </servlet-mapping>

     <!-- 对url进行简单的过滤 -->

     <filter>

         <filter-name>servletRequest</filter-name>

         <filter-class>cn.tomcat.quickstart.common.filter.ServletRequestFilter</filter-class>

     </filter>

     <filter-mapping>

         <filter-name>servletRequest</filter-name>

         <url-pattern>/*</url-pattern>

     </filter-mapping>

 import java.io.IOException;

 import javax.servlet.FilterChain;

 import javax.servlet.ServletException;

 import javax.servlet.http.HttpServletRequest;

 import javax.servlet.http.HttpServletResponse;

 import org.springframework.web.filter.OncePerRequestFilter;

 /**

  *

  * 对进来的url进行处理,放在filter最前面,springmvc <url-pattern>/</url-pattern>

  * 默认拦截所有请求,ex:a/b/c.do,a/b/c.html,a/b/c.action,a/b/c

  * 去掉带后缀的访问,模仿restful风格,只接受a/b/c的请求

  *

  */

 public class ServletRequestFilter extends OncePerRequestFilter {

     @Override

     protected void doFilterInternal(HttpServletRequest request,

             HttpServletResponse response, FilterChain filterChain)

             throws ServletException, IOException {

         String requestPath = request.getServletPath();

         //不用担心会把静态文件给拦截了，例如*.js,*.css类似于这样的，在web.xml做处理了

         //所有请求带有后缀【.】的直接去404,不接受这样的请求

         if(requestPath.lastIndexOf(".")!=-1){

             request.getRequestDispatcher("/WEB-INF/pages/error/404.jsp").forward(request, response);

         }else{

             filterChain.doFilter(request, response);

         }

     }

 }