servlet使用格式

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/** * @(#)Login.java * * * @author * @version 1.00 2012/12/25 */package com.tsinghua;import javax.servlet.http.*;import  java.io.*;public class Login extends HttpServlet{public void doGet(HttpServletRequest req, HttpServletResponse res){try{//中文乱码res.setContentType("text/html;charset=gbk");PrintWriter pw = res.getWriter();pw.println("<html>");pw.println("<body>");pw.println("<h1>登陆界面</h1>");pw.println("<form action=logincl method = post>");pw.println("用户名：<input type=text name= user><br>");pw.println("密码：<input type=password name= passwd><br>");pw.println("密码：<input type=hidden name= hidd><br>");pw.println("123456提交:<input type=submit value=login><br>");pw.println("</form>");pw.println("</body>");pw.println("</html>");System.out.println("登陆=============" + req.getParameter("user")+"=="+req.getParameter("passwd"));}catch(Exception e){System.out.println("登陆=============");e.printStackTrace();}finally{}}public void doPost(HttpServletRequest req, HttpServletResponse res){this.doGet(req, res);}}