package com.imooc.pattern;

import java.io.IOException;

import java.io.PrintWriter;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class Pattern extends HttpServlet {

@Override

protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

//获取当前访问的Url

String url=request.getRequestURL().toString();

//获取id的数字

String id=url.substring(url.lastIndexOf("/")+1);

//配置为utf

response.setContentType("text/html;charst=utf-8");

PrintWriter out=response.getWriter();

out.println(id);

if(id.equals("1")) {

out.println("张三");

}else if(id.equals("2")) {

out.println("lisi");

}

}

}

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

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">

  <display-name>JspPracCode</display-name>

  <welcome-file-list>

    <welcome-file>index.html</welcome-file>

    <welcome-file>index.htm</welcome-file>

    <welcome-file>index.jsp</welcome-file>

    <welcome-file>default.html</welcome-file>

    <welcome-file>default.htm</welcome-file>

    <welcome-file>default.jsp</welcome-file>

  </welcome-file-list>

  <servlet>

  <servlet-name>hh</servlet-name>

  <servlet-class>com.imooc.pattern</servlet-class>

  </servlet>

  <servlet-mapping>

  <servlet-name>hh</servlet-name>

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

  </servlet-mapping>

</web-app>