如何取数据三 servlet模式

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1、servlet.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><html>          <body>                <form action="ServletDemo1"  id="one2" method="post" name="one2">      姓名：<input type="text" id="name" name="name">      年龄：<input type="text" id="age" name="age">      <input type="submit" id="add" value="提交" >      </form>          </body>  </html>

2、web.xml 配置

<servlet><servlet-name>servletfirst</servlet-name><servlet-class>cn.jieshoucanshu.ServletDemo1</servlet-class></servlet><servlet-mapping><servlet-name>servletfirst</servlet-name><url-pattern>/ServletDemo1</url-pattern></servlet-mapping>

3、src java代码里面

servlet 用的是doget、dopost方法

package cn.jieshoucanshu;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 ServletDemo1 extends HttpServlet {    /**     * The doGet method of the servlet. <br>     *     * This method is called when a form has its tag value method equals to get.     *      * @param request the request send by the client to the server     * @param response the response send by the server to the client     * @throws ServletException if an error occurred     * @throws IOException if an error occurred     */    public void doGet(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        response.setContentType("text/html");        PrintWriter out = response.getWriter();        out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");        out.println("<HTML>");        out.println("  <HEAD><TITLE>A Servlet</TITLE></HEAD>");        out.println("  <BODY>");        out.print("    This is ");        out.print(this.getClass());        out.println(", using the GET method");        out.println("  </BODY>");        out.println("</HTML>");        out.flush();        out.close();    }    /**     * The doPost method of the servlet. <br>     *     * This method is called when a form has its tag value method equals to post.     *      * @param request the request send by the client to the server     * @param response the response send by the server to the client     * @throws ServletException if an error occurred     * @throws IOException if an error occurred     */    public void doPost(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {       /* response.setContentType("text/html; charset=gbk");*/    /*request.setCharacterEncoding("utf-8");*/        request.setCharacterEncoding("UTF-8");        response.setContentType("text/html;charset=UTF-8");        String info = request.getParameter("name");        System.out.println("这里的编码格式是"+info);        PrintWriter out = response.getWriter();        out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");        out.println("<HTML>");      /*  out.println("  <HEAD><TITLE>A Servlet</TITLE><meta content="text/html; charset=utf-8"></HEAD>");*/        out.println("  <BODY>");        out.print( info);        out.print("   age ");        out.print(this.getClass());        out.println(", using the POST method");        out.println("  </BODY>");        out.println("</HTML>");        out.flush();        out.close();    }}

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