asp.net mvc中实现Forms身份验证身份验证流程的实例
作者: default|标签:asp.net forms 验证|2017-10-14 10:05
本篇文章主要介绍了asp.net MVC中Forms身份验证身份验证流程,小编觉得挺不错的,现在分享给大家,也给大家做个参考。一起跟随小编过来看看吧

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:

复制代码 代码如下:

@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asp.net mvc中实现Forms身份验证身份验证流程的实例的详细内容,更多请关注php中文网其它相关文章!

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