1.首先，写一个带有下拉框的前台页
1 <%@ page language="java" contentType="text/html; charset=UTF-8"
2 pageEncoding="UTF-8"%>
3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
4 <html>
5 <head>
6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
7 <title>Insert title here</title>
8 </head>
9 <body>
10 <form action="request3.jsp" method="post">
11 来自的国家<br/>
12 <select name="country">
13 <option value="中国">中国</option>
14 <option value="美国">美国</option>
15 <option value="俄罗斯">俄罗斯</option>
16 </select>
17 <br/>
18 <input type="submit" />
19 </form>
20 </body>
21 </html>
2.写一个处理页获取下拉框组件的值
1 <%@ page language="java" contentType="text/html; charset=UTF-8"
2 pageEncoding="UTF-8"%>
3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
4 <html>
5 <head>
6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
7 <title>Insert title here</title>
8 </head>
9 <body>
10 <%
11 request.setCharacterEncoding("utf-8");
12 String national = request.getParameter("country");
13 out.println(national);
14
15 %>
16 </body>
17 </html>
