学用MVC4做网站一:修改密码1.3

一用户

1.1用户注册

1.2用户登录

1.3修改密码

修改密码会用到一个UserChangePassword 模型类，先添加UserChangePassword类

/// <summary>
    /// 用户修改密码模型
    /// </summary>
    [NotMapped]
    public class UserChangePassword
    {
        /// <summary>
        /// 原密码
        /// </summary>
        [Display(Name = "原密码")]
        [Required(ErrorMessage = "×")]
        [StringLength(20, MinimumLength = 6, ErrorMessage = "×")]
        [DataType(DataType.Password)]
        public string Password { get; set; }
        /// <summary>
        /// 新密码
        /// </summary>
        [Display(Name = "新密码", Description = "6-20个字符。")]
        [Required(ErrorMessage = "×")]
        [StringLength(20, MinimumLength = 6, ErrorMessage = "×")]
        [DataType(DataType.Password)]
        public string NewPassword { get; set; }
        /// <summary>
        /// 确认密码
        /// </summary>
        [Display(Name = "确认密码", Description = "再次输入密码。")]
        [Compare("NewPassword", ErrorMessage = "×")]
        [DataType(DataType.Password)]
        public string ConfirmPassword { get; set; }
    }

用到了数据库的更新，先打开UserRepository.cs 修改Update函数

/// <summary>
        /// 更新用户信息
        /// </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;
        }

在修改密码时需要查出用户信息并更新，需要添加Find(string UserName) 函数

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

好了打开UserController，添加ChangePassword Action

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

添加强类型（UserChangePassword）视图，在视图中添加三个文本框，修改后的视图代码

@model Ninesky.Models.UserChangePassword
@{ 
    ViewBag.Title = "修改密码";
    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>修改密码</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="修改密码" />@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()以实现修改密码，修改完成的代码如下：

[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 = "修改密码失败", Details = "修改密码时，系统查询不到用户信息", Cause = Server.UrlEncode("<li>用户在修改密码界面停留的时间过长，登录信息已失效。</li><li>系统错误。</li>"), Solution = Server.UrlEncode("<li>返回<a href='" + Url.Action("ChangePassword", "User") + "'>修改密码</a>页面，输入正确的信息后重新注册</li><li>联系网站管理员</li>") };
                    return RedirectToAction("Error", "Prompt", _e);
                }
                _user.Password = Common.Text.Sha256(userChangePassword.NewPassword);
                if (userRsy.Update(_user))
                {
                    Notice _n = new Notice { Title = "成功修改密码", Details = "您已经成功修改密码，请牢记您的新密码！", DwellTime = 5, NavigationName = "登陆页面", NavigationUrl = Url.Action("Login", "User") };
                    return RedirectToAction("Notice", "Prompt", _n);
                }
                else
                {
                    Error _e = new Error { Title = "修改密码失败", Details = "修改密码时，更新数据库失败！", Cause = Server.UrlEncode("<li>系统错误。</li>"), Solution = Server.UrlEncode("<li>返回<a href='" + Url.Action("ChangePassword", "User") + "'>修改密码</a>页面，输入正确的信息后重新注册</li><li>联系网站管理员</li>") };
                    return RedirectToAction("Error", "Prompt", _e);
                }
            }
            else
            {
                ModelState.AddModelError("Password", "原密码不正确，请重新输入");
                return View();
            }
            
        }

在上面的代码中用到了一个UserName属性，这个是在UserController添加的属性用于返回Cookie中保存的用户名

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

好了，浏览器中预览一下

测试一下，OK,大功告成！