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>"); }}