验证流程
一、用户登录
1、验证表单:ModelState.IsValid
2、验证用户名和密码:通过查询数据库验证
3、如果用户名和密码正确,则在客户端保存Cookie以保存用户登录状态:SetAuthCookie
1):从数据库中查出用户名和一些必要的信息,并把额外信息保存到UserData中
2):把用户名和UserData保存到 FormsAuthenticationTicket 票据中
3):对票据进行加密 Encrypt
4):将加密后的票据保存到Cookie发送到客户端
4、跳转到登录前的页面
5、如果登录失败,返回当前视图
二、验证登录
1、在Global中注册PostAuthenticateRequest事件函数,用于解析客户端发过来的Cookie数据
1):通过 HttpContext.Current.User.Identity 判断用户是否登录(FormsIdentity,IsAuthenticated,AuthenticationType)
2):从HttpContext 的Request的Cookie中解析出Value,解密得到 FormsAuthenticationTicket 得到UserData
2、角色验证
1):在Action加入 Authorize特性,可以进行角色验证
2):在 HttpContext.Current.User 的 IsInRole 方法进行角色认证(需要重写)
一、用户登录
1、设置web.config
设置重定向登录页面
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< system.web > < authentication mode = "Forms" > < forms name = "loginName" loginUrl = "/UserInfo/login" cookieless = "UseCookies" path = "/" protection = "All" timeout = "30" ></ forms > </ authentication > </ system.web > |
注释掉
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< modules > <!--<remove name="FormsAuthentication" />--> </ modules > |
2、登陆的验证中控制器
控制器中加“[Authorize]”修饰的方法拒绝匿名。
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public class UserInfoController : Controller //控制器 { //身份验证过滤器 [Authorize] public ActionResult Index() { return View(); } } |
控制器中登录
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/// <summary> /// 用户登录 /// </summary> /// <returns></returns> public ActionResult login() { return View(); } [HttpPost] public ActionResult login(loginModels login) { if (ModelState.IsValid) { var model = db.Admininfo.FirstOrDefault(a => a.AdminAccount == login.AdminAccount && a.AdminPwd == login.AdminPwd); if (model != null ) { //存入票据(用户登录的时候去存信息,如果有信息直接去登录) var dtoModel = new Users { id = model.id, AdminPwd = model.AdminPwd, AdminAccount=model.AdminAccount }; //调用 SetAuthCookie(dtoModel); //获取登录地址 var returnUrl = Request[ "ReturnUrl" ]; //判断登录地址是不是空值 if (! string .IsNullOrWhiteSpace(returnUrl)) { return Redirect(returnUrl); } else { //return RedirectiToAction return Redirect( "/Home/index" ); } } else { ModelState.AddModelError( "" , "账号密码不对" ); return View(login); } } else { ModelState.AddModelError( "" , "输入的信息有误" ); return View(login); } |
对登录账号进行cookie
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/// <summary> /// 对登录账号进行cookie /// </summary> /// <param name="model"></param> public void SetAuthCookie(Users loginModel) { //1、将对象转换成json var userdata = loginModel.ToJson(); //2、创建票据FormsAuthenticationTicket FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(2, "loginUser" ,DateTime.Now,DateTime.Now.AddDays(1), false , userdata); //对票据进行加密 var tickeEncrypt = FormsAuthentication.Encrypt(ticket); //创建Cookie,定义 HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName, tickeEncrypt); cookie.HttpOnly = true ; cookie.Secure = FormsAuthentication.RequireSSL; cookie.Domain = FormsAuthentication.CookieDomain; cookie.Path = FormsAuthentication.FormsCookiePath; cookie.Expires = DateTime.Now.Add(FormsAuthentication.Timeout); //先移除cookie,在添加cookie Response.Cookies.Remove(FormsAuthentication.FormsCookieName); Response.Cookies.Add(cookie); } |
3、Models中添加模型文件
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public class loginModels { /// <summary> /// 账号 /// </summary> [DisplayName( "账号" )] [Required(ErrorMessage = "账号不能为空" )] public string AdminAccount { get ; set ; } /// <summary> /// 密码 /// </summary> [DisplayName( "密码" )] [Required(ErrorMessage = "密码不能为空" )] public string AdminPwd { get ; set ; } } |
4、Views中 Login 代码:
@using (Html.BeginForm("Login", "Account", new { ReturnUrl = ViewBag.ReturnUrl }, FormMethod.Post, new { @class = "form-horizontal", role = "form" }))
5、Global设置
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protected void Application_AuthenticateRequest( object sender, EventArgs e) { //1、通过sender获取http请求 // HttpApplication app = new HttpApplication();//实例化 HttpApplication app = sender as HttpApplication; //2、拿到http上下文 HttpContext context = app.Context; //3、根据FormsAuthe,来获取cookie var cookie = context.Request.Cookies[FormsAuthentication.FormsCookieName]; if (cookie != null ) { //获取cookie的值 var ticket = FormsAuthentication.Decrypt(cookie.Value); if (! string .IsNullOrWhiteSpace(ticket.UserData)) { //把一个字符串类别变成实体模型 var model = ticket.UserData.ToObject<AdmininfoViewModel>(); //var acount = model.AdminAccount; //获取账号 context.User = new MyFormsPrincipal<AdmininfoViewModel>(ticket, model); //MyFormsPrincipal.Identity = new FormsIdentity(ticket); // MyFormsPrincipal.userdata; } } } |
6、退出登录
控制器中
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/// <summary> /// 退出登录 /// </summary> public ActionResult loginout() { //删除票据 FormsAuthentication.SignOut(); //清除cookie Response.Cookies[FormsAuthentication.FormsCookieName].Expires = DateTime.Now.AddDays(-1); Response.Cookies.Remove(FormsAuthentication.FormsCookieName); return RedirectToAction( "Index" , "Home" ); } |
View跳转链接
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@Html.ActionLink( "安全退出" , "loginout" , "Users" ) |
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://www.jianshu.com/p/d188bb8814f8