三个完整的java注册登录模块源代码和设计说明

/* * To change this template, choose Tools | Templates * and open the template in the editor. */ package com.wy.servlet; import com.wy.dao.*; import com.wy.model.*; import java.io.*; import java.util.*; import javax.mail.*; import javax.mail.internet.*; import javax.servlet.ServletException; import javax.servlet.http.*; public class UserInfoServlet extends HttpServlet { private int method; private UserInfo userInfo = null; private UserInfoDaoImp userInfoDao = null; private HttpSession session = null; public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { method = Integer.parseInt(request.getParameter("method")); if (method == 1) { this.checkAccount(request, response); } if (method == 2) { this.register(request, response); } if (method == 3) { this.findPS1(request, response); } if (method == 4) { this.findPS2(request, response); } } private void sendEmail(String content) { try { String from = "sk666888@sohu.com"; String to = "wgh717@sohu.com"; String subject = "找回密码"; String messageText = content; String password = "111111"; String mailserver = "wanggh"; Properties prop = new Properties(); prop.put("mail.smtp.host", mailserver); prop.put("mail.smtp.auth", "true"); Session sess = Session.getInstance(prop); sess.setDebug(true); MimeMessage message = new MimeMessage(sess); // 给消息对象设置收件人、发件人、主题、发信时间 InternetAddress mail_from = new InternetAddress(from); message.setFrom(mail_from); InternetAddress mail_to = new InternetAddress(to); message.setRecipient(Message.RecipientType.TO, mail_to); message.setSubject(subject); message.setSentDate(new Date()); Multipart mul = new MimeMultipart(); // 新建一个MimeMultipart对象来存放多个BodyPart对象 BodyPart mdp = new MimeBodyPart(); // 新建一个存放信件内容的BodyPart对象 mdp.setContent(messageText, "text/html;charset=gb2312"); mul.addBodyPart(mdp); // 将含有信件内容的BodyPart加入到MimeMulitipart对象中 message.setContent(mul); // 把mul作为消息对象的内容 message.saveChanges(); Transport transport = sess.getTransport("smtp"); // 以smtp方式登陆邮箱，第1个参数是发送邮件用的邮件服务器SMTP地址，第2个参数为用户名，第3个参数为密码 transport.connect(mailserver, from, password); transport.sendMessage(message, message.getAllRecipients()); transport.close(); } catch (Exception e) { System.out.println("发送邮件产生的错误：" + e.getMessage()); } } private void findPS2(HttpServletRequest request, HttpServletResponse response) throws UnsupportedEncodingException, ServletException, IOException { userInfoDao = new UserInfoDao(); String account = new String(request.getParameter("account").getBytes( "ISO8859_1"), "gb2312"); UserInfo userInfo = userInfoDao.queryUserInfo(account); String result = new String(request.getParameter("result").getBytes( "ISO8859_1"), "gb2312"); if (result.equals(userInfo.getResult())) { String password = "111"; String enPasswor = com.wy.tools.Encrypt.encodeMD5(password); userInfo.setPassword(enPasswor); userInfoDao.updateUserInfo(userInfo); String content = "您的密码是：" + password + ",请您牢记！"; sendEmail(content); request.setAttribute("information", "已经将您的密码发送到邮箱！"); } else { request.setAttribute("information", "您输入的密码答案不正确！"); } request.getRequestDispatcher("findPS2.jsp").forward(request, response); } private void findPS1(HttpServletRequest request, HttpServletResponse response) throws UnsupportedEncodingException, ServletException, IOException { userInfoDao = new UserInfoDao(); String account = new String(request.getParameter("account").getBytes( "ISO8859_1"), "gb2312"); UserInfo userInfo = userInfoDao.queryUserInfo(account); if (null != userInfo) { request.setAttribute("userInfo", userInfo); request.getRequestDispatcher("findPS2.jsp").forward(request, response); } else { request.setAttribute("information", "您输入用户并不存在！"); request.getRequestDispatcher("findPS1.jsp").forward(request, response); } } private void checkAccount(HttpServletRequest request, HttpServletResponse response) throws UnsupportedEncodingException, ServletException, IOException { String information = ""; userInfoDao = new UserInfoDao(); session = request.getSession(); String rand = (String) session.getAttribute("rand"); String code = (String) request.getParameter("code"); String account = request.getParameter("account"); String password = request.getParameter("password"); if (com.wy.tools.Encrypt.isValidInput(account) && com.wy.tools.Encrypt.isValidInput(password)) { account = new String(account.getBytes("ISO8859_1"), "gb2312"); password = com.wy.tools.Encrypt.encodeMD5(password); } else { information = "您输入的用户或密码存在非法字符串"; } if (information.equals("")) { if (rand.equals(code)) { userInfo = userInfoDao.queryUserInfo(account); if (null != userInfo) { if (userInfo.getPassword().equals(password)) { session.setAttribute("userInfo", userInfo); } else { information = "您输入的密码不正确"; } } else { information = "您输入的用户名不存在！"; } } else { information = "您输入的验证码不正确！"; } } System.out.println(information); request.setAttribute("information", information); request.getRequestDispatcher("index.jsp").forward(request, response); } private void register(HttpServletRequest request, HttpServletResponse response) throws UnsupportedEncodingException, ServletException, IOException { String information = ""; response.setContentType("text/html;charset=GBK"); PrintWriter out = response.getWriter(); userInfo = new UserInfo(); userInfoDao = new UserInfoDao(); session = request.getSession(); String rand = (String) session.getAttribute("rand"); String code = (String) request.getParameter("code"); String account = request.getParameter("account"); String password = request.getParameter("password"); if (com.wy.tools.Encrypt.isValidInput(account) && com.wy.tools.Encrypt.isValidInput(password)) { account = new String(account.getBytes("ISO8859_1"), "gb2312"); password = com.wy.tools.Encrypt.encodeMD5(password); } else { information = "您输入的用户或密码存在非法字符串"; } if (information.equals("")) { if (rand.equals(code)) { userInfo.setAccount(account); userInfo.setPassword(password); userInfo.setEmail(request.getParameter("email")); userInfo.setQuestion(new String(request .getParameter("question").getBytes("ISO8859_1"), "gb2312")); userInfo.setResult(new String(request.getParameter("result") .getBytes("ISO8859_1"), "gb2312")); System.out.println(userInfo); if (!userInfoDao.saveUserInfo(userInfo)) { information = "您输入的用户名已经存在！"; } } else { information = "您输入的校验码不正确！"; } if (information.equals("")) { information = "您注册成功！"; request.setAttribute("information", information); request.getRequestDispatcher("register.jsp").forward(request, response); } else { out.print("<script language=javascript>alert('" + information + "');history.go(-1);</script>"); } } else { out.print("<script language=javascript>alert('" + information + "');history.go(-1);</script>"); } } }