JavaMail - 注册登陆邮箱验证激活

package com.jy.utils;
import java.util.Properties;
import javax.mail.Authenticator;
import javax.mail.Message;
import javax.mail.Message.RecipientType;
import javax.mail.MessagingException;
import javax.mail.PasswordAuthentication;
import javax.mail.Session;
import javax.mail.Transport;
import javax.mail.internet.AddressException;
import javax.mail.internet.InternetAddress;
import javax.mail.internet.MimeMessage;
import javax.mail.search.RecipientStringTerm;
import sun.nio.cs.MS1250;
/**
 * 邮箱工具
 */
public class MailUtil {
  public static void sendMail(String to,String code) throws Exception{
    // 1.创建连接对象
    Session session = Session.getDefaultInstance(new Properties(), new Authenticator() {
      @Override
      protected PasswordAuthentication getPasswordAuthentication() {
        return new PasswordAuthentication("service@dt.com", "123456");
      }
    });
    // 2.创建邮件对象
    Message message = new MimeMessage(session);
    message.setFrom(new InternetAddress("service@dt.com"));
    message.setRecipient(RecipientType.TO, new InternetAddress(to));
    //主题
    message.setSubject("来自dt的激活邮件");
    //正文
    message.setContent("<h1>来自dt的激活邮件，点击链接激活账号：</h1><h3><a href='http://localhost:8081/javamail01/active?code="+code+"'>http://localhost:8081/javamail01/active?code="+code+"</a></h3>", "text/html;charset=utf-8");
    // 3.发送激活邮件
    Transport.send(message);
  }
}

package com.jy.web.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.jy.domain.User;
import com.jy.service.UserService;
import com.jy.service.impl.UserServiceImpl;
import com.jy.utils.UUIDUtil;
@WebServlet(urlPatterns="/regist")
public class RegistServlet extends HttpServlet{
  private static final long serialVersionUID = 1L;
  @Override
  protected void service(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
    try{
      req.setCharacterEncoding("utf-8");
      res.setCharacterEncoding("utf-8");
      String username = req.getParameter("username");
      String password = req.getParameter("password");
      String nickname = req.getParameter("nickname");
      String email = req.getParameter("email");
      User user = new User();
      user.setNickname(nickname);
      user.setUsername(username);
      user.setCode(UUIDUtil.code());
      user.setStatus(0);  // 状态码，0未激活，1激活
      user.setEmail(email);
      user.setPassword(password);
      UserService userService = new UserServiceImpl();
      userService.save(user);
      req.setAttribute("msg", "注册成功，请邮箱激活");
      req.getRequestDispatcher("/msg.jsp").forward(req, res);
    }catch(Exception e){
    }
  }
}

package com.jy.web.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.jy.domain.User;
import com.jy.service.UserService;
import com.jy.service.impl.UserServiceImpl;
/**
 * 激活注册邮箱
 */
@WebServlet(urlPatterns="/active")
public class ActiveServlet extends HttpServlet{
  private static final long serialVersionUID = 1L;
  @Override
  protected void service(HttpServletRequest req, HttpServletResponse res) throws ServletException, IOException {
    try{
      req.setCharacterEncoding("utf-8");
      res.setCharacterEncoding("utf-8");
      String code = req.getParameter("code");
      UserService userService = new UserServiceImpl();
      User user = userService.findByCode(code);
      if(user!=null){
        // 已经激活
        user.setStatus(1);
        user.setCode(null);
        userService.update(user);
        req.setAttribute("msg", "激活成功，请登录");
      }else{
        // 激活失败
        req.setAttribute("msg", "激活失败，重新激活");
      }
      req.getRequestDispatcher("/msg.jsp").forward(req, res);
    }catch(Exception e){
    }
  }
}

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
  <h1>用户注册的页面</h1>
  <form action="regist" method="post">
    <table width="600" border="1">
      <tr>
        <td>用户名：</td>
        <td><input type="text" name="username"/></td>
      </tr>
      <tr>
        <td>密码：</td>
        <td><input type="password" name="password"/></td>
      </tr>
      <tr>
        <td>昵称：</td>
        <td><input type="text" name="nickname"/></td>
      </tr>
      <tr>
        <td>邮箱：</td>
        <td><input type="text" name="email"/></td>
      </tr>
      <tr>
        <td colspan="2"><input type="submit" value="提交"></td>
      </tr>
    </table>
  </form>
</body>
</html>

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>信息反馈页面</title>
</head>
<body>
  ${msg}
</body>
</html>