【JSP开发】通过request获取各种静态页面的表单数据

最新推荐文章于 2022-03-27 11:45:30 发布

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最新推荐文章于 2022-03-27 11:45:30 发布

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文章标签： java

原文链接：https://yq.aliyun.com/articles/18916

本文介绍了一个简单的注册页面设计，包含多种类型的输入字段，并演示了如何使用Java Servlet从HTTP Post请求中读取这些表单数据。

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>

后台servlet

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);
	}


}