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asp.net身份验证和授权

2006-11-02 10:33 393 查看

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

<%@ Page language="c#" Codebehind="02Login.aspx.cs" AutoEventWireup="false" Inherits="身份验证._02Login" %>
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
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<HTML>
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<HEAD>
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<title>02Login</title>
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</HEAD>
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<body MS_POSITIONING="GridLayout">
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<form id="Form1" method="post" runat="server">
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<FONT face="宋体">
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<TABLE id="Table1" style="Z-INDEX: 102; LEFT: 152px; WIDTH: 446px; POSITION: absolute; TOP: 80px; HEIGHT: 72px"
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cellSpacing="1" cellPadding="1" width="446" border="1">
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<TR>
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<TD>
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<asp:label id="Label1" runat="server">用户名称：</asp:label></TD>
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<TD>
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<asp:textbox id="tbName" runat="server" Width="183px"></asp:textbox></TD>
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<TD>
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<asp:requiredfieldvalidator id="RequiredFieldValidator1" runat="server" ErrorMessage="用户名不能为空！" ControlToValidate="tbName"></asp:requiredfieldvalidator></TD>
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</TR>
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<TR>
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<TD>
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<asp:label id="Label2" runat="server">密码：</asp:label></TD>
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<TD>
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<asp:textbox id="tbPass" runat="server" Width="183px"></asp:textbox></TD>
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<TD>
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<asp:requiredfieldvalidator id="RequiredFieldValidator2" runat="server" ErrorMessage="密码不能为空！" ControlToValidate="tbPass"></asp:requiredfieldvalidator></TD>
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</TR>
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<TR>
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<TD><FONT face="宋体">是否保存Cookie</FONT></TD>
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<TD>
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<asp:checkbox id="PersistCookie" runat="server"></asp:checkbox></TD>
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<TD></TD>
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</TR>
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</TABLE>
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<asp:button id="btnLoginBetter" style="Z-INDEX: 101; LEFT: 288px; POSITION: absolute; TOP: 240px"
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runat="server" Width="78px" Text="登录"></asp:button>
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<asp:HyperLink id="HyperLink1" style="Z-INDEX: 103; LEFT: 456px; POSITION: absolute; TOP: 240px"
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runat="server" NavigateUrl="Default.aspx">HyperLink</asp:HyperLink></FONT>
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</form>
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</body>
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</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

<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，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">
<system.web>
<authorization>
<deny users="*" />
<allow roles="paley"/>
</authorization>
</system.web>
</location>
已看资料修如上．对admin文件夹设置权限，拒绝所有用户,允许paley访问

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

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