用户邮件找回密码实现

改天我在写详细注释吧，代码先贴出来，注释很明白了，应该无需多言。

  1 Controller代码：
  2 public ActionResult ForgotPassword()
  3         {
  4             return View();
  5         }
  6         [ActionName("ForgotPassword"),HttpPost]
  7         public ActionResult ForgotPasswordPost(ForgotPasswordModel model)
  8         {
  9             if (ModelState.IsValid)
 10             {
 11                 var user = _userDal.GetUserByName(model.Name);
 12                 if (user == null)
 13                 {
 14                     ModelState.AddModelError("","用户名不存在！");
 15                     return View();
 16                 }
 17                 if (string.IsNullOrWhiteSpace(user.Email))
 18                 {
 19                     ModelState.AddModelError("", "该账户没有绑定邮箱，无法找回密码！");
 20                     return View();
 21                 }
 22                 string res=_userDal.UserFindPassword(user.ID, user.Name, user.Email, HttpContext.Request.UserHostAddress);
 23                 if (!string.IsNullOrEmpty(res))
 24                 {
 25                     ModelState.AddModelError("", res);
 26                     return View();
 27                 }
 28                 else
 29                 {
 30                     ModelState.AddModelError("","邮件已发送，请注意查收！");
 31                     return View();
 32                 }
 33             }
 34             return View(model);
 35         }
 36 
 37 DAL层代码:
 38   #region 密码找回
 39         /// <summary>
 40         /// 用户找回密码功能
 41         /// </summary>
 42         /// <param name="userId">用户ID</param>
 43         /// <param name="userName">用户名</param>
 44         /// <param name="ip">用户申请找回密码时候的IP</param>
 45         /// <param name="email">用户的邮箱</param>
 46         /// <returns></returns>
 47         public string UserFindPassword(int userId, string userName, string email, string ip)
 48         {
 49             DateTime expirationTime = DateTime.Now.AddDays(1);//申请链接过期时间
 50             Random random = new Random();
 51             var secretKey = random.Next(100000, 999999).ToString().ToPassword();//生成随机的Key
 52             Web_UserFindPassword model = new Web_UserFindPassword
 53             {
 54                 UserID = userId,
 55                 UserName = userName.Trim(),
 56                 IP = ip,
 57                 ExpirationTime = expirationTime,
 58                 SecretKey = secretKey
 59             };
 60             dbContext.Web_UserFindPassword.Add(model);//把申请信息存到数据库去
 61             dbContext.SaveChanges();
 62             StringBuilder sb = new StringBuilder(); sb.Append("亲爱的" + userName + "您好：<br/><br/>");
 63             sb.Append("点击以下链接设置新密码。<br/><br/>");
 64             sb.Append("<a href ="http://www.vimi8.com/Member/FindPassword?SecretKey=" + model.SecretKey + "&UserId=" + model.UserID + "&ExpirationTime=" + model.ExpirationTime + "">http://www.vimi8.com/Member/FindPassword?SecretKey=" + model.SecretKey + "&UserId=" + model.UserID + "&ExpirationTime=" + "&ExpirationTime=" + model.ExpirationTime + " </a><br/><br/>");
 65             sb.Append("(如果无法点击该URL链接地址，请将它复制并粘帖到浏览器的地址输入框，然后单击回车即可。)<br/><br/>");
 66             sb.Append("注意:本链接有效期24小时，过期链接将会失效。在您点击一次后失效。<br/><br/>");
 67             sb.Append("我们将一如既往、热忱的为您服务！<br/><br/>");
 68             string messageBody = sb.ToString();
 69             string res = MailInfo.SendMail(email, "为米网找回密码", messageBody);
 70             return res;
 71         }
 72 
 73         public Web_UserFindPassword GetFindPasswordModel(string secretKey, int userId, DateTime expirationTime)
 74         {
 75             return dbContext.Web_UserFindPassword.FirstOrDefault(x => x.ExpirationTime.Minute == expirationTime.Minute && x.SecretKey == secretKey && x.UserID == userId);
 76         }
 77 
 78         public void DeleteFindPasswordModel(int id)
 79         {
 80             var find = dbContext.Web_UserFindPassword.FirstOrDefault(x => x.ID == id);
 81             if (find != null)
 82             {
 83                 dbContext.Web_UserFindPassword.Remove(find);
 84                 dbContext.SaveChanges();
 85             }
 86         }
 87         #endregion
 88 
 89 数据库设计：
 90 using System;
 91 
 92 
 93     public class Web_UserFindPassword
 94     {
 95         public int ID { get; set; }
 96         public int? UserID { get; set; }
 97         public string UserName { get; set; }
 98         public DateTime ExpirationTime { get; set; }
 99         public string SecretKey { get; set; }
100         public string IP { get; set; }
101     }