JSP入门学习（三）使用post方法从表单、复选框向Servlet传递信息

最新推荐文章于 2021-01-04 02:53:18 发布

__2018__

最新推荐文章于 2021-01-04 02:53:18 发布

阅读量1.1k

点赞数

分类专栏： JSP web 文章标签： post table checkbox servlet

本文链接：https://blog.youkuaiyun.com/duan_2018/article/details/79852453

版权

这篇博文介绍了如何在JSP中使用POST方法向Servlet传递表单信息，包括复选框的数据。文章详细阐述了在Servlet中读取表单参数的三种方法：getParameter()用于获取单个参数值，getParameterValues()用于获取复选框等多次出现的参数值，而getParameterNames()则用于获取所有参数名。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

上一篇博文写到了用GET方法向servlet传递信息：https://blog.youkuaiyun.com/duan_2018/article/details/79843722这一篇博文在这个基础上，用post方法传递各种信息。

一、读取表单信息

HelloServlet的代码，在dopost()这里写了即可

 doGet(request, response);

package duan;

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;

/**
 * Servlet implementation class HelloServlet
 */
@WebServlet("/HelloServlet")
public class HelloServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public HelloServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		response.setContentType("text/html;charset=UTF-8");
		PrintWriter out = response.getWriter();
		String title = " ";
        String docType = "<!DOCTYPE html> \n";
        String name =new String(request.getParameter("name").getBytes("ISO8859-1"),"UTF-8");
        out.println(docType +
                "<html>\n" +
                "<head><title>" + title + "</title></head>\n" +
                "<body bgcolor=\"#f0f0f0\">\n" +
                "<h1 align=\"center\">" + title + "</h1>\n" +
                "<ul>\n" +
                "  <li><b>姓名</b>："
                + name + "\n" +
                "  <li><b>say</b>："
                + request.getParameter("say") + "\n" +
                "</ul>\n" +
                "</body></html>");
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		 doGet(request, response);
	}

}

主页的代码

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>my_hello_test</title>
</head>
<body>
<fo

最低0.47元/天解锁文章