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asp.net身份验证和授权

 2006-10-23 17:17:17 来源:WEB开发网   
核心提示:今天闲着无聊.想起来了asp.net身份验证.感觉良好.贴出下列代码:login.aspx HTML代码 1<%@ Page language="c#" Codebehind="02Login.aspx.cs" AutoEventWireup="false&qu

今天闲着无聊.想起来了asp.net身份验证.感觉良好.贴出下列代码:
login.aspx HTML代码

 
 1<%@ Page language="c#" Codebehind="02Login.aspx.cs" AutoEventWireup="false" Inherits="身份验证._02Login" %>
 2<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
 3<HTML>
 4   <HEAD>
 5     <title>02Login</title>
 6     <meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
 7     <meta name="CODE_LANGUAGE" Content="C#">
 8     <meta name="vs_defaultClientScript" content="javaScript">
 9     <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
10   </HEAD>
11   <body MS_POSITIONING="GridLayout">
12     <form id="Form1" method="post" runat="server">
13       <FONT face="宋体">
14         <TABLE id="Table1" style="Z-INDEX: 102; LEFT: 152px; WIDTH: 446px; POSITION: absolute; TOP: 80px; HEIGHT: 72px"
15           cellSpacing="1" cellPadding="1" width="446" border="1">
16           <TR>
17             <TD>
18               <asp:label id="Label1" runat="server">用户名称:</asp:label></TD>
19             <TD>
20               <asp:textbox id="tbName" runat="server" Width="183px"></asp:textbox></TD>
21             <TD>
22               <asp:requiredfieldvalidator id="RequiredFieldValidator1" runat="server" ErrorMessage="用户名不能为空!" ControlToValidate="tbName"></asp:requiredfieldvalidator></TD>
23           </TR>
24           <TR>
25             <TD>
26               <asp:label id="Label2" runat="server">密码:</asp:label></TD>
27             <TD>
28               <asp:textbox id="tbPass" runat="server" Width="183px"></asp:textbox></TD>
29             <TD>
30               <asp:requiredfieldvalidator id="RequiredFieldValidator2" runat="server" ErrorMessage="密码不能为空!" ControlToValidate="tbPass"></asp:requiredfieldvalidator></TD>
31           </TR>
32           <TR>
33             <TD><FONT face="宋体">是否保存Cookie</FONT></TD>
34             <TD>
35               <asp:checkbox id="PersistCookie" runat="server"></asp:checkbox></TD>
36             <TD></TD>
37           </TR>
38         </TABLE>
39         <asp:button id="btnLoginBetter" style="Z-INDEX: 101; LEFT: 288px; POSITION: absolute; TOP: 240px"
40           runat="server" Width="78px" Text="登录"></asp:button>
41         <asp:HyperLink id="HyperLink1" style="Z-INDEX: 103; LEFT: 456px; POSITION: absolute; TOP: 240px"
42           runat="server" NavigateUrl="Default.aspx">HyperLink</asp:HyperLink></FONT>
43     </form>
44   </body>
45</HTML>
login.aspx.cs代码如下

PRivate void btnLoginBetter_Click(object sender, System.EventArgs e)
  {
  if (this.tbName.Text == "admin" && this.tbPass.Text == "admin")
  {
   FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(1,this.tbName.Text,DateTime.Now,DateTime.Now.AddMinutes(30),this.PersistCookie.Checked,"User");//创建一个验证票据
   string cookieStr = FormsAuthentication.Encrypt(ticket);进行加密
   HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName,cookieStr);创建一个cookie,cookie名为web.config设置的名,值为加密后的数据cookieStr,
   if (this.PersistCookie.Checked)//判断用户是否选中保存cookie
   cookie.Expires = ticket.Expiration;//获取cookie过期时间
   cookie.Path = FormsAuthentication.FormsCookiePath;//设置cookie保存路径
   Response.Cookies.Add(cookie);
   string strRedirect;
   strRedirect = Request["ReturnUrl"];//取出返回url
   if (strRedirect == null)
   strRedirect = "Default.aspx";
   Response.Redirect(strRedirect,true);

  }
  else
  {
   Response.Write("<script>alert('帐号或密码错误!');self.location.href='02login.aspx'</script>");
  }
  }


 

Default.aspx HTML代码

<body MS_POSITIONING="GridLayout">
     <form id="Form1" method="post" runat="server">
       <FONT face="宋体">
         <asp:Label id="Label1" style="Z-INDEX: 106; LEFT: 224px; POSITION: absolute; TOP: 72px" runat="server">用户名称:</asp:Label>
         <asp:Label id="Label2" style="Z-INDEX: 102; LEFT: 220px; POSITION: absolute; TOP: 136px" runat="server">身份:</asp:Label>
         <asp:Label id="lbUser" style="Z-INDEX: 103; LEFT: 350px; POSITION: absolute; TOP: 79px" runat="server"></asp:Label>
         <asp:Label id="lbSf" style="Z-INDEX: 104; LEFT: 355px; POSITION: absolute; TOP: 133px" runat="server"></asp:Label>
         <asp:Button id="btnLogout" style="Z-INDEX: 105; LEFT: 261px; POSITION: absolute; TOP: 192px"
           runat="server" Text="注销" Width="101px"></asp:Button></FONT>
     </form>
   </body>
后置代码

private void Page_Load(object sender, System.EventArgs e)
  {
  this.lbUser.Text = User.Identity.Name;
  if (User.IsInRole("Admin"))
   this.lbSf.Text = "Admin";
  else
   this.lbSf.Text = "User";
  }

  Web 窗体设计器生成的代码#region Web 窗体设计器生成的代码
  override protected void OnInit(EventArgs e)
  {
  //
  // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
  //
  InitializeComponent();
  base.OnInit(e);
  }
 
  /**//// <summary>
  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  /// </summary>
  private void InitializeComponent()
  {  
  this.btnLogout.Click += new System.EventHandler(this.btnLogout_Click);
  this.Load += new System.EventHandler(this.Page_Load);

  }
  #endregion

  private void btnLogout_Click(object sender, System.EventArgs e)
  {
  FormsAuthentication.SignOut();//注销票
  Response.Redirect("login.aspx",true);返回login.aspx页面
  }


webconfig配置如下
   <authentication mode="Forms" >
  <forms name=".SecurityDemo" loginUrl="login.aspx">//.SecurityDemo为cookie名,
  </forms>
   </authentication>

 <authorization>
       <deny users="?"/> //拒绝所有匿名用户
       <allow roles="admins"/>//允许管理级别用户访问
  </authorization>
自我感觉ASP写多了,一般是用session进行判断用户是否合法,但在一个ASP.NET项目中使用身份验证,基本上所有页面都要验证才能访问,感觉有点迁强.但可以在web.config页面对指定的页面设置权限,设置代码如下
  <location path="admin.aspx">
   <system.web>
    <authorization>
     <deny users="?" />
    </authorization>
   </system.web>
  </location>
如果只有几个页面设置如上代码,感觉还可以接受.但页面多了岂不是要把人累死呀..
可能是小的项目做多了,大项目没接触过.请高手给指点具体用途呀.不甚感激.

http://www.cnblogs.com/paleyyang/archive/2006/10/21/536147.html

Tags:asp net 身份

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