asp.net mvc 忘记密码 代码实现

以下是一个简单的 ASP.NET MVC 忘记密码功能的实现：

1. 创建 ForgotPassword 视图

在 Views 文件夹中创建 ForgotPassword.cshtml 视图，并在视图中添加一个表单，用于接收用户输入的电子邮件地址。

@model ForgotPasswordViewModel

@using (Html.BeginForm("ForgotPassword", "Account", FormMethod.Post, new { @class = "form-horizontal" }))
{
    <div class="form-group">
        @Html.LabelFor(m => m.Email, new { @class = "col-md-2 control-label" })
        <div class="col-md-10">
            @Html.TextBoxFor(m => m.Email, new { @class = "form-control" })
        </div>
    </div>

    <div class="form-group">
        <div class="col-md-offset-2 col-md-10">
            <button type="submit" class="btn btn-default">Send Password Reset Link</button>
        </div>
    </div>
}

2. 创建 ForgotPasswordViewModel

在 Models 文件夹中创建 ForgotPasswordViewModel 类，用于存储用户输入的电子邮件地址。

public class ForgotPasswordViewModel
{
    [Required]
    [EmailAddress]
    public string Email { get; set; }
}

3. 创建 ForgotPasswordAction

在 AccountController 中创建 ForgotPasswordAction，用于处理用户发送密码重置链接的请求。

[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> ForgotPassword(ForgotPasswordViewModel model)
{
    if (ModelState.IsValid)
    {
        var user = await UserManager.FindByEmailAsync(model.Email);
        if (user == null || !(await UserManager.IsEmailConfirmedAsync(user.Id)))
        {
            // 如果用户不存在或未确认电子邮件，则不显示该视图，以防止揭示用户信息
            return View("ForgotPasswordConfirmation");
        }

        // 生成密码重置令牌并将其发送给用户
        var code = await UserManager.GeneratePasswordResetTokenAsync(user.Id);
        var callbackUrl = Url.Action("ResetPassword", "Account", new { userId = user.Id, code = code }, protocol: Request.Url.Scheme);
        await UserManager.SendEmailAsync(user.Id, "Reset Password", "Please reset your password by clicking here: <a href=\"" + callbackUrl + "\">link</a>");
        return RedirectToAction("ForgotPasswordConfirmation", "Account");
    }

    // 如果我们到了这里，那么模型状态不正确，重新显示表单
    return View(model);
}

4. 创建 ForgotPasswordConfirmation 视图

在 Views 文件夹中创建 ForgotPasswordConfirmation.cshtml 视图，用于显示“已发送密码重置链接”的消息。

<p>Please check your email to reset your password.</p>

5. 创建 ResetPassword 视图

在 Views 文件夹中创建 ResetPassword.cshtml 视图，用于让用户输入新密码。

@model ResetPasswordViewModel

@using (Html.BeginForm("ResetPassword", "Account", FormMethod.Post, new { @class = "form-horizontal" }))
{
    @Html.HiddenFor(m => m.Code)

    <div class="form-group">
        @Html.LabelFor(m => m.Email, new { @class = "col-md-2 control-label" })
        <div class="col-md-10">
            @Html.TextBoxFor(m => m.Email, new { @class = "form-control", @readonly = "readonly" })
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(m => m.Password, new { @class = "col-md-2 control-label" })
        <div class="col-md-10">
            @Html.PasswordFor(m => m.Password, new { @class = "form-control" })
        </div>
    </div>

    <div class="form-group">
        @Html.LabelFor(m => m.ConfirmPassword, new { @class = "col-md-2 control-label" })
        <div class="col-md-10">
            @Html.PasswordFor(m => m.ConfirmPassword, new { @class = "form-control" })
        </div>
    </div>

    <div class="form-group">
        <div class="col-md-offset-2 col-md-10">
            <button type="submit" class="btn btn-default">Reset Password</button>
        </div>
    </div>
}

6. 创建 ResetPasswordViewModel

在 Models 文件夹中创建 ResetPasswordViewModel，用于存储用户输入的新密码。

public class ResetPasswordViewModel
{
    [Required]
    [EmailAddress]
    public string Email { get; set; }

    [Required]
    [StringLength(100, ErrorMessage = "The {0} must be at least {2} characters long.", MinimumLength = 6)]
    [DataType(DataType.Password)]
    [Display(Name = "New password")]
    public string Password { get; set; }

    [DataType(DataType.Password)]
    [Display(Name = "Confirm new password")]
    [Compare("Password", ErrorMessage = "The new password and confirmation password do not match.")]
    public string ConfirmPassword { get; set; }

    public string Code { get; set; }
}

7. 创建 ResetPasswordAction

在 AccountController 中创建 ResetPasswordAction，用于处理用户重置密码的请求。

[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public async Task<ActionResult> ResetPassword(ResetPasswordViewModel model)
{
    if (!ModelState.IsValid)
    {
        return View(model);
    }

    var user = await UserManager.FindByEmailAsync(model.Email);
    if (user == null)
    {
        // 不显示该视图，以防止揭示用户信息
        return RedirectToAction("ResetPasswordConfirmation", "Account");
    }

    var result = await UserManager.ResetPasswordAsync(user.Id, model.Code, model.Password);
    if (result.Succeeded)
    {
        return RedirectToAction("ResetPasswordConfirmation", "Account");
    }

    foreach (var error in result.Errors)
    {
        ModelState.AddModelError("", error);
    }

    return View();
}

8. 创建 ResetPasswordConfirmation 视图

在 Views 文件夹中创建 ResetPasswordConfirmation.cshtml 视图，用于显示“密码已重置”的消息。

<p>Your password has been reset.</p>

完成上述步骤后，ASP.NET MVC 忘记密码功能就已经实现了。