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本篇文章給大家分享的是有關MVC4制作網站中怎樣實現用戶登陸,小編覺得挺實用的,因此分享給大家學習,希望大家閱讀完這篇文章后可以有所收獲,話不多說,跟著小編一起來看看吧。
一用戶
1.1用戶注冊
1.2用戶登陸
首先在Models里添加用戶登陸模型類UserLogin,該類只要用用戶名,密碼和驗證碼三個字段。
/// <summary> /// 用戶登陸模型 /// </summary> public class UserLogin { /// <summary> /// 用戶名 /// </summary> [Display(Name = "用戶名", Description = "4-20個字符。")] [Required(ErrorMessage = "×")] [StringLength(20, MinimumLength = 4, ErrorMessage = "×")] public string UserName { get; set; } /// <summary> /// 密碼 /// </summary> [Display(Name = "密碼", Description = "6-20個字符。")] [Required(ErrorMessage = "×")] [StringLength(20, MinimumLength = 6, ErrorMessage = "×")] [DataType(DataType.Password)] public string Password { get; set; } /// <summary> /// 驗證碼 /// </summary> [Display(Name = "驗證碼", Description = "請輸入圖片中的驗證碼。")] [Required(ErrorMessage = "×")] [StringLength(6, MinimumLength = 6, ErrorMessage = "×")] public string VerificationCode { get; set; } }
在UserController里添加Login action; 代碼看如下:
public ActionResult Login() { return View(); } [HttpPost] public ActionResult Login(UserLogin login) { return View(); }
使用Cookie保存登陸賬號,密碼等信息,修改public ActionResult Login(UserLogin login)。修改完成代碼如下:
[HttpPost] public ActionResult Login(UserLogin login) { //驗證驗證碼 if (Session["VerificationCode"] == null || Session["VerificationCode"].ToString() == "") { Error _e = new Error { Title = "驗證碼不存在", Details = "在用戶注冊時,服務器端的驗證碼為空,或向服務器提交的驗證碼為空", Cause = "<li>你注冊時在注冊頁面停留的時間過久頁已經超時</li><li>您繞開客戶端驗證向服務器提交數據</li>", Solution = "返回<a href='" + Url.Action("Register", "User") + "'>注冊</a>頁面,刷新后重新注冊" }; return RedirectToAction("Error", "Prompt", _e); } else if (Session["VerificationCode"].ToString() != login.VerificationCode.ToUpper()) { ModelState.AddModelError("VerificationCode", "×"); return View(); } //驗證賬號密碼 userRsy = new UserRepository(); if (userRsy.Authentication(login.UserName, Common.Text.Sha256(login.Password)) == 0) { HttpCookie _cookie = new HttpCookie("User"); _cookie.Values.Add("UserName", login.UserName); _cookie.Values.Add("Password", Common.Text.Sha256(login.Password)); Response.Cookies.Add(_cookie); return RedirectToAction("Default","User"); } else { ModelState.AddModelError("Message", "登陸失敗!"); return View(); } }
在public ActionResult Login() 上右鍵添加強類型視圖
完成后代的Login.cshtml
@model CMS.Models.UserLogin @{ ViewBag.Title = "用戶登陸"; 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>用戶登陸</dt> <dd> <div class="label">@Html.LabelFor(model => model.UserName):</div> <div class="ctrl">@Html.EditorFor(model => model.UserName) @Html.ValidationMessageFor(model => model.UserName) @Html.DisplayDescriptionFor(model => model.UserName) </div> </dd> <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">驗證碼:</div> <div class="ctrl"> @Html.TextBoxFor(model => model.VerificationCode) @Html.ValidationMessageFor(model => model.VerificationCode) <img id="verificationcode" alt="" src="@Url.Action("VerificationCode", "User")" /> <a id="trydifferent" >換一張</a> </div> </dd> <dd> <div class="label"></div> <div class="ctrl"> <input type="submit" value="登陸" />@Html.ValidationMessage("Message"); </div> </dd> </dl> <div class="clear"></div> </div> } <script type="text/javascript"> $("#trydifferent").click(function () { $("#verificationcode").attr("src", "/User/VerificationCode?" + new Date()); }) </script> @section Scripts { @Scripts.Render("~/bundles/jqueryval") }
瀏覽器中查看一下登陸頁面
點下登陸測試一下。OK登陸成功
驗證用戶是否已經登陸,這塊和權限驗證一起從AuthorizeAttribute繼承個自定義驗證類
在項目里添加Extensions文件夾,添加一個類UserAuthorizeAttribute 繼承自AuthorizeAttribute,重寫AuthorizeCore方法用來實現用戶是否已經登陸的驗證,權限驗證在寫權限功能時在補充
using Ninesky.Repository; namespace System.Web.Mvc { /// <summary> /// 用戶權限驗證 /// </summary> public class UserAuthorizeAttribute :AuthorizeAttribute { /// <summary> /// 核心【驗證用戶是否登陸】 /// </summary> /// <param name="httpContext"></param> /// <returns></returns> protected override bool AuthorizeCore(HttpContextBase httpContext) { //檢查Cookies["User"]是否存在 if (httpContext.Request.Cookies["User"] == null) return false; //驗證用戶名密碼是否正確 HttpCookie _cookie = httpContext.Request.Cookies["User"]; string _userName = _cookie["UserName"]; string _password = _cookie["Password"]; httpContext.Response.Write("用戶名:"+_userName); if (_userName == "" || _password == "") return false; UserRepository _userRsy = new UserRepository(); if (_userRsy.Authentication(_userName, _password) == 0) return true; else return false; } } }
以后只要在需要登陸后才能操作的Action或Controller上加[UserAuthorize]就可實現驗證是否已經登錄了。
退出功能,在UserController添加Logout Action
/// <summary> /// 退出系統 /// </summary> /// <returns></returns> public ActionResult Logout() { if (Request.Cookies["User"] != null) { HttpCookie _cookie = Request.Cookies["User"]; _cookie.Expires = DateTime.Now.AddHours(-1); Response.Cookies.Add(_cookie); } Notice _n = new Notice { Title = "成功退出", Details = "您已經成功退出!", DwellTime = 5, NavigationName="網站首頁", NavigationUrl = Url.Action("Index", "Home") }; return RedirectToAction("Notice", "Prompt", _n); }
以上就是MVC4制作網站中怎樣實現用戶登陸,小編相信有部分知識點可能是我們日常工作會見到或用到的。希望你能通過這篇文章學到更多知識。更多詳情敬請關注億速云行業資訊頻道。
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