Java实现邮箱找回密码

’+密钥key) 
数据库字段(用户名(主键),密钥key,过期时间) 
url参数(用户名,数字签名) ,密钥key的生成：在每一个用户找回密码时候为这个用户生成一个密钥key ，

 

url example:http://www.wechat68.com:80/CardSSHOK/checkLink?sid=K3xHOi4o/UihH5QYWBDfYA==&userName=123

 

 

 

 

生成过期时间,生成数字签名,生成url,发送邮件.   AddU(用户名,密钥key,过期时间) 

 

使用到的数据库如下 

 

package com.soq.card.web.action;

import java.sql.Timestamp;
import java.util.List;
import java.util.UUID;

import org.hibernate.Criteria;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.Restrictions;
import org.springframework.orm.hibernate3.HibernateTemplate;

import com.soq.card.biz.UserHander;
import com.soq.card.entity.Users;
import com.soq.card.tools.DBhepler;
import com.soq.card.tools.Mail;
import com.soq.card.tools.Md5;
import com.soq.card.web.base.BaseAction;

/**
 * @author javen
 * @Email zyw205@gmail.com
 * 
 */
public class PassEmailAction extends BaseAction {
    private Users users;
    private UserHander userHander;

    private String email;
    private String sid;
    private String userName;
    
    public String sendmail() {
        try {
            HibernateTemplate ht = this.getUserHander().getUsersDAO().getHibernateTemplate();
            SessionFactory factory = ht.getSessionFactory();
            Session session = factory.openSession();
            Criteria criteria = session.createCriteria(Users.class);
            criteria.add(Restrictions.eq("loginName", email));
            List<Users> list = criteria.list();
            if (list.size() > 0) {
                users=list.get(0);
                Mail mail = new Mail();

                String secretKey = UUID.randomUUID().toString(); // 密钥
                Timestamp outDate = new Timestamp(System.currentTimeMillis() + 30 * 60 * 1000);// 30分钟后过期
                long date = outDate.getTime() / 1000 * 1000;// 忽略毫秒数  mySql 取出时间是忽略毫秒数的
                
                DBhepler bhepler=new DBhepler();
                String sql="update users set outDate=?,validataCode=? where loginName=?;";
                String str[] ={outDate+"",secretKey,users.getLoginName()};
                bhepler.AddU(sql, str);
                
                //this.getUserHander().getUsersDAO().getHibernateTemplate().update(users); // 保存到数据库
                System.out.println("   UserName>>>> "+users.getUserName());
                String key =users.getUserName() + "$" + date + "$" + secretKey;
                System.out.println(" key>>>"+key);
                String digitalSignature = Md5.md5(key);// 数字签名

                String path = this.getRequest().getContextPath();
                String basePath = this.getRequest().getScheme() + "://"
                        + this.getRequest().getServerName() + ":"
                        + this.getRequest().getServerPort() + path + "/";
                String resetPassHref = basePath + "checkLink?sid="
                        + digitalSignature +"&userName="+users.getUserName();
                String emailContent = "请勿回复本邮件.点击下面的链接,重设密码<br/><a href="
                        + resetPassHref + " target=‘_BLANK‘>" + resetPassHref
                        + "</a>  或者    <a href=" + resetPassHref
                        + " target=‘_BLANK‘>点击我重新设置密码</a>"
                        + "<br/>tips:本邮件超过30分钟,链接将会失效，需要重新申请‘找回密码‘" + key
                        + "\t" + digitalSignature;

                mail.setTo(email);
                mail.setFrom("XX");// 你的邮箱
                mail.setHost("smtp.163.com");
                mail.setUsername("XXX@163.com");// 用户
                mail.setPassword("CXXX");// 密码
                mail.setSubject("[二维码名片]找回您的账户密码");
                mail.setContent(emailContent);
                if (mail.sendMail()) {
                    System.out.println(" 发送成功");
                    this.getRequest().setAttribute("mesg", "重置密码邮件已经发送，请登陆邮箱进行重置！");
                    return "sendMail";
                }
            } else {
                this.getRequest().setAttribute("mesg", "用户名不存在,你不会忘记邮箱了吧?");
                return "noUser";
            }
        } catch (Exception e) {
            // TODO: handle exception 
            e.printStackTrace();
        }
        return null;
    }

    public String checkResetLink() {
        System.out.println("sid>>>" + sid);

        if (sid.equals("")  || userName.equals("")) {
            this.getRequest().setAttribute("mesg", "链接不完整,请重新生成");
            System.out.println(">>>>> null");
            return "error";
        }
        HibernateTemplate ht = this.getUserHander().getUsersDAO().getHibernateTemplate();
        SessionFactory factory = ht.getSessionFactory();
        Session session = factory.openSession();
        Criteria criteria = session.createCriteria(Users.class);
        criteria.add(Restrictions.eq("userName", userName));
        List<Users> list = criteria.list();
        if (list.size()>0) {
            users=list.get(0);
            
            Timestamp outDate = (Timestamp) users.getOutDate();
            System.out.println("outDate>>>"+outDate);
             if(outDate.getTime() <= System.currentTimeMillis()){ //表示已经过期
                 this.getRequest().setAttribute("mesg", "链接已经过期,请重新申请找回密码.");
                 System.out.println("时间 超时");
                 return "error";
             }
             
             String key = users.getUserName()+"$"+outDate.getTime()/1000*1000+"$"+users.getValidataCode();//数字签名
            
             System.out.println("key link》》"+key);
             String digitalSignature = Md5.md5(key);// 数字签名
             
             System.out.println("digitalSignature>>>>"+digitalSignature);
              if(!digitalSignature.equals(sid)) {
                  this.getRequest().setAttribute("mesg", "链接不正确,是否已经过期了?重新申请吧.");
                      System.out.println("标示不正确");
                    return "error";
              }else {
                //链接验证通过 转到修改密码页面
                this.getRequest().setAttribute("user", users);
                return "success";
            }
        }else {
            this.getRequest().setAttribute("mesg", "链接错误,无法找到匹配用户,请重新申请找回密码.");
            System.out.println("用户不存在");
            return "error";
        }
    }

    public Users getUsers() {
        return users;
    }

    public void setUsers(Users users) {
        this.users = users;
    }

    public UserHander getUserHander() {
        return userHander;
    }

    public void setUserHander(UserHander userHander) {
        this.userHander = userHander;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getSid() {
        return sid;
    }

    public void setSid(String sid) {
        this.sid = sid;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

}

补充1：Timestamp类型对象在保存到数据的时候 毫秒精度会丢失。比如:2014-05-20 10:30:10.234  存到mysql数据库的时候 变成 2013-05-20 10:30:10.0。时间变得不相同了,sid 匹配的时候不会相等。 所以我做了忽略精度的操作。

补充2：解决linux下面title中文乱码

 

      sun.misc.BASE64Encoder enc = new sun.misc.BASE64Encoder();
      mailMessage.setSubject(MimeUtility.encodeText(mailInfo.getSubject(), "UTF-8", "B"));      //解决linux邮件title乱码

补充3:怎么不直接把sid插入到users表呢。验证的时候直接比较sid就ok了。

 

源码下载地址  链接:http://pan.baidu.com/s/1sj1LBf3 密码:fa4x

 链接：http://pan.baidu.com/s/1c07aGH6 密码：pahk 数据库