package cn.web.http;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 Demo5 extends HttpServlet {    public void doGet(HttpServletRequest request, HttpServletResponse response)            throws ServletException, IOException {        response.setContentType("text/html;charset=UTF-8");        PrintWriter pw = response.getWriter();        pw.write("<form method='' action='#'>");        pw.write(" 用户名： <input type='text' name='username/'><br/>");        pw.write("密码： <input type='password' name='password/'><br/>");        pw.write("<select name = 'role>");        pw.write("<option value='普通用户'>普通用户</option>");        pw.write("<option value='超级用户'>超级用户</option>");        pw.write("</select><br>");        pw.write("<input type='submit' value = '提交'>");        pw.write("</form>");    }}