servlet获取jsp页面的复选框中的多个值
<%@ page contentType="text/html;charset=UTF-8" language="java" %><html> <head> <title>$Title$</title> </head> <body> <form method="post" action="/Day04_war_exploded/Demo03Servlet"> 账号: <input type="text" name="username"><br> 密码: <input type="text" name="password"><br> 爱好: <input type="checkbox" name="hobby" value="抽烟">抽烟 <input type="checkbox" name="hobby" value="喝酒">喝酒 <input type="checkbox" name="hobby" value="烫头">烫头 <input type="submit" value="提交"> </form> </body></html>12345678910111213141516
servlet怎么获取多个爱好?
String[] hobbys = request.getParameterValues("hobby");1
可以使用getParameterValues()方法,获取多个value值
这边前端勾选三个爱好:
后端servlet代码如下:
package com.lbl.servlet;import javax.servlet.ServletException;import javax.servlet.annotation.WebServlet;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.io.IOException;import java.util.Arrays;@WebServlet("/Demo03Servlet")public class Demo03Servlet extends HttpServlet { protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { doGet(request,response); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("utf-8"); String[] hobbys = request.getParameterValues("hobby"); System.out.println(Arrays.toString(hobbys)); }}12345678910111213141516171819202122
效果如下:
作者:水巷石子
链接:https://blog.csdn.net/qq_37924905/article/details/108514129
来源:CSDN
著作权归作者所有,转载请联系作者获得授权,切勿私自转载。