<?xml version="1.0" encoding="UTF-8"?>

 <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"

          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

          xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"

          version="4.0">

     <!--声明-->

     <servlet>

         <servlet-name>book</servlet-name>

         <servlet-class>com.dz.service.BookServlet</servlet-class>

     </servlet>

 <!--绑定servlet路径-->

     <servlet-mapping>

         <servlet-name>book</servlet-name>

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

     </servlet-mapping>

 </web-app>