A detailed introduction on how to use forms validation in .net MVC

This article mainly introduces in detail the relevant information for using forms verification in .net MVC. It has certain reference value and interested friends can refer to it. Let’s take a look at the forms verification used in

.net MVC for your reference. The specific content is as follows

The divisions of the folder look like this

First set the

authentication and authorization nodes in Web.config

 <system.web>
  <authentication mode="Forms">
   <forms loginUrl="~/Login/Index" timeout="2880" defaultUrl="~/Home/Index"/>
  </authentication>
  <anonymousIdentification enabled="true"/>
  <authorization>
   <deny users="?"/> <!--拒绝匿名访问-->
  </authorization>
  <compilation debug="true" targetFramework="4.5" />
  <httpRuntime targetFramework="4.5" />
  <httpModules>
   <add name="ApplicationInsightsWebTracking" type="Microsoft.ApplicationInsights.Web.ApplicationInsightsHttpModule, Microsoft.AI.Web" />
  </httpModules>
 </system.web>

If there is no need for anonymous access in the Login folder, or there is a method besides login in LoginController It can be accessed anonymously,

Then we need to add this node

 <location path="Login"> <!--这里的意思就是LoginController下的方法可以匿名访问-->
  <system.web>
   <authorization>
    <allow users="*" /> <!--允许匿名访问-->
   </authorization>
  </system.web>
 </location>

Post a part of the code for the login method, for reference only

 public bool ValidateUser(LoginVO model)
    {
      string encodePassword = MD5(model.PassWord);//加密
      string sql =
        "select * from User_Users where (UserName=@UserName or JobNumber=@JobNumber) and PassWord=@PassWord";
      var user = Context.Data.Query<UsersPO>(sql,
        new {UserName = model.LoginName, JobNumber = model.LoginName, PassWord = encodePassword}).SingleOrDefault();
      if (user == null) return false;
      DateTime expiration = model.IsRememberLogin //是否记住密码
        ? DateTime.Now.AddDays(14)
        : DateTime.Now.Add(FormsAuthentication.Timeout);
      var ticket=new FormsAuthenticationTicket(
        1,//指定版本号：可随意指定
        user.UserName,//登录用户名：对应 Web.config 中 <allow users="Admin" … /> 的 users 属性
        DateTime.Now, //发布时间
        expiration,//失效时间
        true,//是否为持久 Cookie
        user.UserId.ToString(), //用户数据：可用 ((System.Web.Security.FormsIdentity)(HttpContext.Current.User.Identity)).Ticket.UserData 获取
        FormsAuthentication.FormsCookiePath //指定 Cookie 为 Web.config 中 <forms path="/" … /> path 属性，不指定则默认为“/”
        );
      var encryptedTicket = FormsAuthentication.Encrypt(ticket);
      if (HttpContext.Current.Request.Cookies[FormsAuthentication.FormsCookieName] != null)
      {
        HttpContext.Current.Request.Cookies.Remove(FormsAuthentication.FormsCookieName);
      }
      var loginIdentify=new HttpCookie(FormsAuthentication.FormsCookieName);
      if (model.IsRememberLogin)
      {
        loginIdentify.Expires = DateTime.Now.AddDays(7);
      }
      loginIdentify.Value = encryptedTicket;
      HttpContext.Current.Response.AppendCookie(loginIdentify);//添加Cookie
      return true;
    }

    /// <summary>
    /// 加密
    /// </summary>
    /// <param name="str"></param>
    /// <param name="encoding"></param>
    /// <param name="toUpper"></param>
    /// <param name="isReverse"></param>
    /// <param name="count"></param>
    /// <returns></returns>
    private string MD5(string str, Encoding encoding=null, int count = 1)
    {
      if (encoding == null)
      {
        encoding = Encoding.Default;
      }
      var bytes = new MD5CryptoServiceProvider().ComputeHash(encoding.GetBytes(str));
      var md5 = string.Empty;
      for (int i = 0; i < bytes.Length; i++)
      {
        md5 += bytes[i].ToString("x").PadLeft(2, &#39;0&#39;);
      }     
      if (count <= 1) { return md5; }
      return MD5(md5, encoding, --count);
    }

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