Example of implementing Forms authentication authentication process in asp.net mvc-C#.Net Tutorial-php.cn

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Verification process

1. User login

1. Verification Form: ModelState.IsValid
2. Verify username and password: Verify by querying the database
3. If the username and password are correct, save the cookie on the client to save the user login status: SetAuthCookie
1): From Find the username and some necessary information in the database, and save the additional information to UserData
　2): Save the username and UserData to the FormsAuthenticationTicket ticket
3): Encrypt the ticket Encrypt
4) : Save the encrypted ticket in Cookie and send it to the client
4. Jump to the page before login
5. If login fails, return to the current view

2 , Verify login

1. Register the PostAuthenticateRequest event function in Global to parse the Cookie data sent by the client
1): Judge by HttpContext.Current.User.Identity Whether the user is logged in (FormsIdentity, IsAuthenticated, AuthenticationType)
2): Parse the Value from the cookie of the Request of the HttpContext, decrypt it to get the FormsAuthenticationTicket and get the UserData
2, role verification
1): Add the Authorize feature to the Action , role verification can be performed
　2): Perform role authentication in the IsInRole method of HttpContext.Current.User (needs to be rewritten)

1. User login

1. Set web.config

Set redirect login page

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Comment out

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2. Login verification controller

Methods modified with "[Authorize]" in the controller reject anonymity.

public class UserInfoController : Controller //控制器 { //身份验证过滤器 [Authorize] public ActionResult Index() { return View(); } }

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///  /// 用户登录 /// 
 ///  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); }

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Cookie the login account

///  /// 对登录账号进行cookie /// 
 ///  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); }

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3. Add model files to Models

public class loginModels { ///  /// 账号 /// 
 [DisplayName("账号")] [Required(ErrorMessage = "账号不能为空")] public string AdminAccount { get; set; } ///  /// 密码 /// 
 [DisplayName("密码")] [Required(ErrorMessage = "密码不能为空")] public string AdminPwd { get; set; } }

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4. Login code in Views:

Copy codeThe code is as follows:

@using (Html.BeginForm("Login", "Account", new { ReturnUrl = ViewBag.ReturnUrl }, FormMethod.Post, new { @class = "form-horizontal", role = "form" }))

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5.Global settings

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(); //var acount = model.AdminAccount; //获取账号 context.User = new MyFormsPrincipal(ticket, model); //MyFormsPrincipal.Identity = new FormsIdentity(ticket); // MyFormsPrincipal.userdata; } } }

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6. Log out

In the controller

///  /// 退出登录 /// 
 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"); }

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View jump link

@Html.ActionLink("安全退出","loginout","Users")

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