servlet获取复选框内容

最新推荐文章于 2022-06-10 16:54:44 发布

原创最新推荐文章于 2022-06-10 16:54:44 发布 · 4.6k 阅读

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CC 4.0 BY-SA版权

本文介绍了一种在Servlet中处理HTML表单复选框数据的方法，通过使用getParameterValues方法获取复选框数组，并遍历输出。示例代码展示了如何在Servlet和HTML中实现这一过程。

先通过String[] hobbys=request.getParameterValues("hobby");获取复选框的内容，并将其放入数组中，然后遍历数组输出就可以了。

servlet代码：

package com.neusoft.servlet;

import java.io.IOException;
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 IpServlet
 */
@WebServlet("/InfoServlet")
public class InfoServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public InfoServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doPost(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		response.setContentType("text/html");
		int age=Integer.valueOf(request.getParameter("age"));
		response.getWriter().print(age);
		//复选框接受一个数组
		String[] hobbys=request.getParameterValues("hobby");
		for(String s:hobbys){
			response.getWriter().print(s);
		}
	}

}

html代码：

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	<form action="InfoServlet" method="post">
	age=<input type="text" name="age"><br>
	hobby=<input type="checkbox" name="hobby" value="a">aa
	<input type="checkbox" name="hobby" value="b">bb
	<input type="checkbox" name="hobby" value="c">cc<br>
	<input type="submit" value="submit">
	</form>
</body>
</html>