Servlet请求获得表单内容_serlvet请求对象中获取表单信息的代码-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_51907130/article/details/124064954

该博客展示了如何使用Servlet从HTTP请求中获取GET参数，包括用户名、密码和多个电话品牌选项，并通过PrintWriter将结果输出到响应中。示例代码详细解释了Servlet的基本用法，包括设置响应编码、读取表单数据以及处理POST请求。

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Servlet部分

package com.vetor.lesson01;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


@WebServlet("/getparam")
public class getparam extends HttpServlet {
	private static final long serialVersionUID = 1L;
       

    public getparam() {
        super();
        
    }


	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
		//设置编码方式
		response.setContentType("text/html;charset=utf-8");
		//创建流
		PrintWriter out = response.getWriter();
		String username = request.getParameter("username");
		String pwd = request.getParameter("pwd");
		String[] str = request.getParameterValues("phone");
		
		out.println("欢迎用户名:"+username+" 密码: "+pwd+"<br>");
		for(String st:str) {
		out.write(st+"<br>");
		}
	
	}

	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {	
		doGet(request, response);
	}

}

HTML页面


<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="getparam" method="get">
UserName:<input type="text" name="username"><br>
Password:<input type="password" name="pwd"><br>
你喜欢的手机品牌:
<input type="checkbox" name="phone" value="sanxing">三星
<input type="checkbox" name="phone" value="Apple">苹果
<input type="checkbox" name="phone" value="huawei">华为
<input type="checkbox" name="phone" value="vivo">步步高
<br>
<input type="submit" value="提交">
</form>

</body>
</html>