web.xml

<?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">

    <servlet>
        <servlet-name>servlet1</servlet-name>
        <servlet-class>cn.com.coderZoe.Module4WebServer.Class4Servlet1</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>servlet1</servlet-name>
        <url-pattern>/one</url-pattern>
        <url-pattern>/first</url-pattern>
    </servlet-mapping>

    <servlet>
        <servlet-name>servlet2</servlet-name>
        <servlet-class>cn.com.coderZoe.Module4WebServer.Class4Servlet2</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>servlet2</servlet-name>
        <url-pattern>/two</url-pattern>
        <url-pattern>/second</url-pattern>
    </servlet-mapping>
</web-app>