分享程序员开发的那些事...
更新时间：2021-10-08 04:14:10
这里模拟了一个注册页面，表单中含有需要需要填写的项目，下面我将实现用request在servlet将前台页面提交给服务器端的数据拿到。
前台页面form.html:<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>form.html</title>
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="this is my page">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
</head>
<body>
<form action="/day06/servlet/RequestDemo3" method="post">
用户名：<input type="text" name="username"><br/>
密码： <input type="password" name="password"><br/>
性别：
<input type="radio" name="gender" value="male">男
<input type="radio" name="gender" value="female">女<br/>
所在地：
<select name="city">
<option value="beijing">北京</option>
<option value="shanghai">上海</option>
<option value="changsha">长沙</option>
</select><br/>
爱好：
<input type="checkbox" name="likes" value="sing"/>唱歌
<input type="checkbox" name="likes" value="dance"/>跳舞
<input type="checkbox" name="likes" value="basketball"/>篮球
<input type="checkbox" name="likes" value="football"/>足球
<br/>
备注：<textarea rows="6" cols="60" name="description"></textarea><br/>
大头照：<input type="file" name="image"/><br/>
<input type="hidden" name="id" value="888888"><br/>
<input type="submit" name="提交">
</form>
</body>
</html>
RequestDemo3.java:
package cn.edu.Request;
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 RequestDemo3 extends HttpServlet {
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
System.out.println(request.getParameter("username"));
System.out.println(request.getParameter("password"));
System.out.println(request.getParameter("gender"));
System.out.println(request.getParameter("city"));
String likes[]=request.getParameterValues("likes");
for (int i = 0; likes!=null&&i < likes.length; i++) {
System.out.println(likes[i]);
}
System.out.println(request.getParameter("description"));
System.out.println(request.getParameter("id"));
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request,response);
}
}