asp.net身份验证和授权

2022-07-15 80酷酷网 80kuku.com

　　asp.net

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="">
10    </HEAD>
11    <body MS_POSITIONING="GridLayout">
12        <form id="Form1" method="post" runat="server">
13            <FONT face="宋体">
14                <TABLE id="Table1" 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" 101; LEFT: 288px; POSITION: absolute; TOP: 240px"
40                    runat="server" Width="78px" Text="登录"></asp:button>
41                <asp:HyperLink id="HyperLink1" 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.}
}

Default.aspx　HTML代码

<body MS_POSITIONING="GridLayout">
        <form id="Form1" method="post" runat="server">
            <FONT face="宋体">
                <asp:Label id="Label1" 106; LEFT: 224px; POSITION: absolute; TOP: 72px" runat="server">用户名称：</asp:Label>
                <asp:Label id="Label2" 102; LEFT: 220px; POSITION: absolute; TOP: 136px" runat="server">身份：</asp:Label>
                <asp:Label id="lbUser" 103; LEFT: 350px; POSITION: absolute; TOP: 79px" runat="server"></asp:Label>
                <asp:Label id="lbSf" 104; LEFT: 355px; POSITION: absolute; TOP: 133px" runat="server"></asp:Label>
                <asp:Button id="btnLogout" 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