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
<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
<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。
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
/// <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
/// <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
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
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
/// <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
@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脚本之家。
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