HttpServletRequest获取提交表单参数(五)

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(一)代码演示
HttpServletRequest的方法：https://www.gnu.org/software/classpathx/servletapi/javadoc/javax/servlet/http/HttpServletRequest.html

<!DOCTYPE html><html><head><meta  http-equiv="Content-Type" content="text/html" charset="UTF-8"><title>演示01</title></head><body><form  action="/Project01/DemoServlet" method="post"> 用户名：<input  type="text"  name="username"><br/>密&nbsp;&nbsp;码：<input  type="password"  name="password"><br/>爱好：<input  type="checkbox"  name="hobby" value="sing">唱歌 <input  type="checkbox"  name="hobby" value="dance">跳舞 <input  type="checkbox"  name="hobby" value="football">足球 <br><input type="submit" value="提交"></form></body></html>----------package com.demo;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 DemoServlet extends HttpServlet {    private static final long serialVersionUID = 1L;    protected void doGet(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        doPost(request, response);    }    protected void doPost(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        String name = request.getParameter("username");        String password = request.getParameter("password");        PrintWriter out = response.getWriter();        out.println("用户名：" + name);        out.println("密码：" + password);        String[] hobbys = request.getParameterValues("hobby");        for (int i = 0; i < hobbys.length; i++) {            out.println(hobbys[i] );        }    }}----------<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">  <display-name>Project01</display-name>  <servlet>      <!-- servlet-name名任意取 -->      <servlet-name>demo</servlet-name>      <!--servlet-class填写(包名.类名)  -->      <servlet-class>com.demo.DemoServlet</servlet-class>  </servlet>  <servlet-mapping>      <servlet-name>demo</servlet-name>      <!-- Servlet的多重映射 -->      <url-pattern>/DemoServlet</url-pattern>  </servlet-mapping>  <welcome-file-list>    <welcome-file>index.html</welcome-file>  </welcome-file-list></web-app>

(二)结果演示

这里写图片描述

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