學用MVC4做網站一:修改密碼1.3

一用戶

1.1用戶注冊

1.2用戶登錄

1.3修改密碼

修改密碼會用到一個UserChangePassword 模型類，先添加UserChangePassword類

/// <summary>
    /// 用戶修改密碼模型
    /// </summary>
    [NotMapped]
    public class UserChangePassword
    {
        /// <summary>
        /// 原密碼
        /// </summary>
        [Display(Name = "原密碼")]
        [Required(ErrorMessage = "×")]
        [StringLength(20, MinimumLength = 6, ErrorMessage = "×")]
        [DataType(DataType.Password)]
        public string Password { get; set; }
        /// <summary>
        /// 新密碼
        /// </summary>
        [Display(Name = "新密碼", Description = "6-20個字符。")]
        [Required(ErrorMessage = "×")]
        [StringLength(20, MinimumLength = 6, ErrorMessage = "×")]
        [DataType(DataType.Password)]
        public string NewPassword { get; set; }
        /// <summary>
        /// 確認密碼
        /// </summary>
        [Display(Name = "確認密碼", Description = "再次輸入密碼。")]
        [Compare("NewPassword", ErrorMessage = "×")]
        [DataType(DataType.Password)]
        public string ConfirmPassword { get; set; }
    }

用到了數據庫的更新，先打開UserRepository.cs 修改Update函數

/// <summary>
        /// 更新用戶信息
        /// </summary>
        /// <param name="user"></param>
        /// <returns></returns>
        public override bool Update(User user)
        {
            dbContext.Users.Attach(user);
            dbContext.Entry<User>(user).State = System.Data.EntityState.Modified;
            if (dbContext.SaveChanges() > 0) return true;
            else return false;
        }

在修改密碼時需要查出用戶信息並更新，需要添加Find(string UserName) 函數

/// <summary>
        /// 查找用戶
        /// </summary>
        /// <param name="UserName">用戶名</param>
        /// <returns></returns>
        public User Find(string UserName)
        {
            return dbContext.Users.SingleOrDefault(u => u.UserName == UserName);
        }

好了打開UserController，添加ChangePassword Action

/// <summary>
        /// 修改密碼
        /// </summary>
        /// <returns></returns>
        [UserAuthorize]
        public ActionResult ChangePassword()
        {
            return View();
        }
        [HttpPost]
        [UserAuthorize]
        public ActionResult ChangePassword()
        {
            return View();
        }

添加強類型（UserChangePassword）視圖，在視圖中添加三個文本框，修改后的視圖代碼

@model Ninesky.Models.UserChangePassword
@{ 
    ViewBag.Title = "修改密碼";
    Layout = "~/Views/Shared/_Layout.cshtml";
}

<div class="banner">
    <img src="~/Skins/Default/Images/banner.jpg" />
</div>

@using (Html.BeginForm())
{
    @Html.ValidationSummary(true)

    <div class="form">
        <dl>
            <dt>修改密碼</dt>
            <dd>
                <div class="label">@Html.LabelFor(model => model.Password)：</div>
                <div class="ctrl">@Html.PasswordFor(model => model.Password)
                    @Html.ValidationMessageFor(model => model.Password)
                    @Html.DisplayDescriptionFor(model => model.Password)
                </div>
            </dd>
            <dd>
                <div class="label">@Html.LabelFor(model => model.NewPassword)：</div>
                <div class="ctrl">@Html.PasswordFor(model => model.NewPassword)
                    @Html.ValidationMessageFor(model => model.NewPassword)
                    @Html.DisplayDescriptionFor(model => model.NewPassword)
                </div>
            </dd>
            <dd>
                <div class="label">@Html.LabelFor(model => model.ConfirmPassword)：</div>
                <div class="ctrl">@Html.PasswordFor(model => model.ConfirmPassword)
                    @Html.ValidationMessageFor(model => model.ConfirmPassword)
                    @Html.DisplayDescriptionFor(model => model.ConfirmPassword)
                </div>
            </dd>
            <dd>
                <div class="label"></div>
                <div class="ctrl">
                    <input type="submit" value="修改密碼" />@Html.ValidationMessage("Message")
                </div>
            </dd>
        </dl>
        <div class="clear"></div>
    </div>
}
@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}

修改UserController中[HttpPost]方式的ChangePassword()以實現修改密碼，修改完成的代碼如下：

[HttpPost]
        [UserAuthorize]
        public ActionResult ChangePassword(UserChangePassword userChangePassword)
        {
            userRsy = new UserRepository();
            if (userRsy.Authentication(UserName, Common.Text.Sha256(userChangePassword.Password)) == 0)
            {
                var _user = userRsy.Find(UserName);
                if (_user == null)
                {
                    Error _e = new Error { Title = "修改密碼失敗", Details = "修改密碼時，系統查詢不到用戶信息", Cause = Server.UrlEncode("<li>用戶在修改密碼界面停留的時間過長，登錄信息已失效。</li><li>系統錯誤。</li>"), Solution = Server.UrlEncode("<li>返回<a href='" + Url.Action("ChangePassword", "User") + "'>修改密碼</a>頁面，輸入正確的信息后重新注冊</li><li>聯系網站管理員</li>") };
                    return RedirectToAction("Error", "Prompt", _e);
                }
                _user.Password = Common.Text.Sha256(userChangePassword.NewPassword);
                if (userRsy.Update(_user))
                {
                    Notice _n = new Notice { Title = "成功修改密碼", Details = "您已經成功修改密碼，請牢記您的新密碼！", DwellTime = 5, NavigationName = "登陸頁面", NavigationUrl = Url.Action("Login", "User") };
                    return RedirectToAction("Notice", "Prompt", _n);
                }
                else
                {
                    Error _e = new Error { Title = "修改密碼失敗", Details = "修改密碼時，更新數據庫失敗！", Cause = Server.UrlEncode("<li>系統錯誤。</li>"), Solution = Server.UrlEncode("<li>返回<a href='" + Url.Action("ChangePassword", "User") + "'>修改密碼</a>頁面，輸入正確的信息后重新注冊</li><li>聯系網站管理員</li>") };
                    return RedirectToAction("Error", "Prompt", _e);
                }
            }
            else
            {
                ModelState.AddModelError("Password", "原密碼不正確，請重新輸入");
                return View();
            }
            
        }

在上面的代碼中用到了一個UserName屬性，這個是在UserController添加的屬性用於返回Cookie中保存的用戶名

/// <summary>
        /// 獲取用戶名
        /// </summary>
        public string UserName { 
            get {
                HttpCookie _cookie = Request.Cookies["User"];
                if (_cookie == null) return "";
                else return _cookie["UserName"];
                }
        }

好了，瀏覽器中預覽一下

測試一下，OK,大功告成！