html与服务器连接的问题（服务器是老师写的）

pcjzq 2014-10-02 08:58:43



<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

<head>

<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />

<title>无标题文档</title>

<style type="text/css">

<!--

.STYLE1 {font-size: 36px}

.STYLE2 {font-size: 24px}

-->

</style>

</head>





<body>

<div align="center" class="STYLE1">





  <form id="form1" name="form1" method="post" action="/servlet/Kaijiang">

    输入您购买的号码

    <label>

    <input name="number" type="text" id="number" />

    </label>

    <p>

      <label>

      <input name="Submit" type="submit" value="提交" />

      </label>

    </p>

    <p align="left" class="STYLE2"> <font color="#FF0000">注意：号码为1-35，选择其中的7个不同的数字，您输入的号码无需用空格分开</font></p>

  </form>

</div>

</body>





</html>

下面是交互的class文件



package kaijiang;



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 Kaijiang extends HttpServlet

{

  public void doPost(HttpServletRequest paramHttpServletRequest, HttpServletResponse paramHttpServletResponse)

    throws ServletException, IOException

  {

    paramHttpServletResponse.setContentType("text/html");



    PrintWriter localPrintWriter = paramHttpServletResponse.getWriter();



    String str1 = paramHttpServletRequest.getParameter("number");



    localPrintWriter.println("<!DOCTYPE HTML PUBLIC '-//W3C//DTD HTML 4.01 Transitional//EN'>");



    char[] ch = str1.toCharArray();



    for (int i = 0; i < ch.length; ++i)

    {

      for (int j = 0; j < i - 1; ++j)

      {

        if (ch[i] == ch[j])

        {

          localPrintWriter.println("<HTML>");

          localPrintWriter.println("<HEAD><TITLE>false</TITLE></HEAD>");

          localPrintWriter.println("<BODY bgcolor='#fdf5e6'>您输入的号码中有重复的数字</BODY>");

          localPrintWriter.println("</HTML>");

        }

      }



    }



    char[] kj = null;

    for (int i = 0; i < 7; ++i)

    {

      kj[i] = (char)(int)(Math.random() * 35.0D + 1D);

      for (int j = 0; j < i - 1; ++j)

      {

        if (kj[i] == kj[j])

        {

          --i;

          break;

        }

      }



    }



    int level = 0;

    for (int i = 0; i < ch.length; ++i)

    {

      for (int j = 0; j < kj.length; ++j)

      {

        if (ch[i] == kj[j])

        {

          ++level;

          break;

        }

      }



    }



    localPrintWriter.println("<HTML>");

    localPrintWriter.println("<HEAD><TITLE>result</TITLE></HEAD>");

    localPrintWriter.println("<BODY bgcolor='#fdf5e6'>");

    localPrintWriter.print("您购买的号码: ");

    for (i = 0; i < ch.length; ++i)

    {

      localPrintWriter.print(ch[i] + " ");

    }

    localPrintWriter.print("/t");

    localPrintWriter.print("开奖号码: ");

    for (i = 0; i < kj.length; ++i)

    {

      localPrintWriter.print(kj[i] + " ");

    }

    localPrintWriter.print("/t");

    localPrintWriter.print("您购买号码中奖个数有" + level + "个");

    localPrintWriter.println("</BODY>");

    localPrintWriter.println("</HTML>");

  }

}