实例名称： 潜在用户网络调查表
HTML页面代码
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>潜在用户网络调查</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
</head>
<body>
<h1>
潜在用户网络调查
</h1>
<br>
<form method="post" action="/webproject1/servlet/loginform">
<table border="0">
<tr>
<td align="right">
姓名：
</td>
<td colspan="2" align="left">
<input type="text" name="name" size="40">
</td>
</tr>
<tr>
<td align="right">
EMAIL：
</td>
<td colspan="2" align="left">
<input type="text" name="email" size="40">
</td>
</tr>
<tr>
<td align="right">
年纪：
</td>
<td align="left">
<input type="radio" name="age" value="18">
小于18
<input type="radio" name="age" value="18-25">
18 - 25
<input type="radio" name="age" value="26-40">
26-40
<input type="radio" name="age" value=">40">
大于 40
</td>
</tr>
<tr>
<td align="right">
编程时间：
</td>
<td align="left">
<select name="codetime" size=1>
<option value="never">
不编程
<option value="6">
小于6个月
<option value="6-12">
6 - 12 月
<option value="12-24">
1 - 2年
<option value=">24">
2年以上
</select>
</td>
</tr>
<tr>
<td align="right">
使用的操作系统
</td>
<td align="left">
<select name="os" size="6" multiple>
<option value="WinXP">
Win XP
</option>
<option value="Win2000/2003">
Win 2000/2003
</option>
<option value="Linux">
Linux
</option>
<option value="FreeBSD">
FreeBSD
</option>
<option value="MacOS">
Mac OS
</option>
<option value="other">
other
</option>
</select>
</td>
</tr>
<tr>
<td>
使用的编程语言
</td>
<td>
<input type="checkbox" name="language" value="C">
C
<input type="checkbox" name="language" value="C++">
C++
<input type="checkbox" name="language" value="C#">
C#
<input type="checkbox" name="language" value="Python">
Python
<input type="checkbox" name="language" value="Java">
Java
<input type="checkbox" name="language" value="VB">
VB
<input type="checkbox" name="language" value="Dephi">
Dephi
</td>
</tr>
<tr>
<td align="right">
建议：
</td>
<td colspan="2" align="left">
<textarea name="comment" cols="40" rows="4"></textarea>
</td>
</tr>
<tr>
<td></td>
<td>
<input type="reset" value="reset">
<input type="submit" value="submit">
</td>
</tr>
</table>
</form>
</body>
</html>
servlet中的代码
package com.v503.zhouzhou;
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 LoginForm extends HttpServlet {
private static final long serialVersionUID = 1560239073696880062L;
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doPost(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();
out.println("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\">");
request.setCharacterEncoding("utf-8");
out.println("<HTML>");
out.println(" <HEAD><TITLE>A Servlet</TITLE></HEAD>");
out.println(" <BODY>");
out.println("姓名:"+filterHtml(request.getParameter("name"))+"<br>");
out.println("email:"+filterHtml(request.getParameter("email"))+"<br>");
out.println("年龄:"+filterHtml(request.getParameter("age"))+"<br>");
out.println("编程时间："+request.getParameter("codetime")+"<br>");
out.println("使用的操作系统:");
@SuppressWarnings("unused")
String os[]=request.getParameterValues("os");
for(int i = 0;i<os.length;i++)
{ out.println(os[i]+"<br>");}
out.println("使用的编程语言");
@SuppressWarnings("unused")
String language[]=request.getParameterValues("language");
for(int i = 0;i<language.length;i++)
{out.println(language[i]+"<br>");}
out.println("建议："+filterHtml(request.getParameter("comment"))+"<br>");
out.println(" </BODY>");
out.println("</HTML>");
out.flush();
out.close();
}
// 过滤的方法
public String filterHtml(String value){
value=value.replaceAll("&","&");
value=value.replaceAll("<", "<");
value=value.replaceAll(">", ">");
value=value.replaceAll(" "," ");
value=value.replaceAll("'","value39;");
value=value.replaceAll("\"","value;");
value=value.replaceAll("\n", "value");
return value;
}
}
web.xml文件代码
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>LoginForm</servlet-name>
<servlet-class>com.v503.zhouzhou.LoginForm</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>LoginForm</servlet-name>
<url-pattern>/servlet/loginform</url-pattern>
</servlet-mapping>
</web-app>