asp.net中使用窗体身份验证 [转]来源:小灰http://www.svnhost.cn/Article/Detail-23.shtml
转载地址:http://www.svnhost.cn/Article/Detail-23.shtml
1.
1.
1<authentication mode="Forms"></authentication>
2.新建一个独立用户登录的类:using System;
using System.Collections.Generic;
using System.Text;
using System.Web;
using System.Web.Security;
namespace BLL
{
/// <summary>
/// 用户实用类
/// </summary>
public sealed class UserUtil
{
public static void Login(string username, string roles, bool isPersistent)
{
DateTime dt = isPersistent ? DateTime.Now.AddMinutes(99999) : DateTime.Now.AddMinutes(60);
FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(
1, // 票据版本号
username, // 票据持有者
DateTime.Now, //分配票据的时间
dt, // 失效时间
isPersistent, // 需要用户的 cookie
roles, // 用户数据,这里其实就是用户的角色
FormsAuthentication.FormsCookiePath);//cookie有效路径
//使用机器码machine key加密cookie,为了安全传送
string hash = FormsAuthentication.Encrypt(ticket);
HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName, hash); //加密之后的cookie
//将cookie的失效时间设置为和票据tikets的失效时间一致
if (ticket.IsPersistent)
{
cookie.Expires = ticket.Expiration;
}
//添加cookie到页面请求响应中
HttpContext.Current.Response.Cookies.Add(cookie);
}
public static void Logout()
{
HttpCookie cookie = HttpContext.Current.Response.Cookies[FormsAuthentication.FormsCookieName];
if (cookie == null)
{
cookie = new HttpCookie(FormsAuthentication.FormsCookieName);
HttpContext.Current.Response.Cookies.Add(cookie);
}
cookie.Expires = DateTime.Now.AddYears(-10);
}
}
}
3.
using System.Collections.Generic;
using System.Text;
using System.Web;
using System.Web.Security;
namespace BLL
{
/// <summary>
/// 用户实用类
/// </summary>
public sealed class UserUtil
{
public static void Login(string username, string roles, bool isPersistent)
{
DateTime dt = isPersistent ? DateTime.Now.AddMinutes(99999) : DateTime.Now.AddMinutes(60);
FormsAuthenticationTicket ticket = new FormsAuthenticationTicket(
1, // 票据版本号
username, // 票据持有者
DateTime.Now, //分配票据的时间
dt, // 失效时间
isPersistent, // 需要用户的 cookie
roles, // 用户数据,这里其实就是用户的角色
FormsAuthentication.FormsCookiePath);//cookie有效路径
//使用机器码machine key加密cookie,为了安全传送
string hash = FormsAuthentication.Encrypt(ticket);
HttpCookie cookie = new HttpCookie(FormsAuthentication.FormsCookieName, hash); //加密之后的cookie
//将cookie的失效时间设置为和票据tikets的失效时间一致
if (ticket.IsPersistent)
{
cookie.Expires = ticket.Expiration;
}
//添加cookie到页面请求响应中
HttpContext.Current.Response.Cookies.Add(cookie);
}
public static void Logout()
{
HttpCookie cookie = HttpContext.Current.Response.Cookies[FormsAuthentication.FormsCookieName];
if (cookie == null)
{
cookie = new HttpCookie(FormsAuthentication.FormsCookieName);
HttpContext.Current.Response.Cookies.Add(cookie);
}
cookie.Expires = DateTime.Now.AddYears(-10);
}
}
}
//假设有UserInfo实体类,有UserInfo.GetUserInfoByPassword根据用户名,密码取用户的方法。chkCookie.Checked表示是否持久登录。true:下次打开浏览器自动登录。//u.Roles表示该用户的角色,如果没有启用角色的话,随便传值即可。
UserInfo u = UserInfo.GetUserInfoByPassword(txtUserName.Text, MD5(txtPassword.Text));
if (u!=null && u.UserId>0)
{
UserUtil.Login(u.UserName, u.Roles chkCookie.Checked);
if (Request.QueryString["ReturnUrl"] != null && !Request.QueryString["ReturnUrl"].ToLower().Contains("login.aspx"))
Response.Redirect(Request.QueryString["returnUrl"]);
else
Response.Redirect("/");
}
else
Label1.Text = "登录失败,可能是密码错误,请重新登录";
4.如果需要对登录用户也区别对待?这时用“角色”来处理就最方便了。首先需要建立如下类,该类是用来恢复用户身份和角色用的:UserInfo u = UserInfo.GetUserInfoByPassword(txtUserName.Text, MD5(txtPassword.Text));
if (u!=null && u.UserId>0)
{
UserUtil.Login(u.UserName, u.Roles chkCookie.Checked);
if (Request.QueryString["ReturnUrl"] != null && !Request.QueryString["ReturnUrl"].ToLower().Contains("login.aspx"))
Response.Redirect(Request.QueryString["returnUrl"]);
else
Response.Redirect("/");
}
else
Label1.Text = "登录失败,可能是密码错误,请重新登录";
using System;
using System.Web;
using System.Text.RegularExpressions;
using System.Configuration;
using System.Collections;
using System.Web.Security;
using System.Security.Principal;
using System.IO;
namespace BLL
{
/// <summary>
/// MyHttpModule 的摘要说明。
/// </summary>
public class MyHttpModule : IHttpModule
{
public void Init(HttpApplication app)
{
app.AuthenticateRequest += new EventHandler(app_AuthenticateRequest);
app.EndRequest += new EventHandler(app_EndRequest);
}
void app_EndRequest(object sender, EventArgs e)
{
foreach (string key in HttpContext.Current.Response.Cookies)
{
HttpContext.Current.Response.Cookies[key].Domain = ConfigurationManager.AppSettings["domain"];//这里可以保证你的cookie都是顶级域名下的,可以实现二级域名,N级域名登录
}
}
public void Dispose() { }
private void app_AuthenticateRequest(object sender, EventArgs e)
{
// 提取窗体身份验证 cookie
string cookieName = FormsAuthentication.FormsCookieName;
HttpCookie authCookie = HttpContext.Current.Request.Cookies[cookieName];
if (null == authCookie)
{
// 没有身份验证 cookie。
return;
}
FormsAuthenticationTicket authTicket = null;
authTicket = FormsAuthentication.Decrypt(authCookie.Value);
if (null == authTicket)
{
// 无法解密 Cookie。
return;
}
// 创建票证后,为 UserData 属性指定一个
// 以管道符分隔的角色名字符串。
string[] roles = authTicket.UserData.Split(new char[] { ',' });
// 创建一个标识对象
FormsIdentity id = new FormsIdentity(authTicket);
// 该主体将通过整个请求。
GenericPrincipal principal = new GenericPrincipal(id, roles);
// 将新的主体对象附加到当前的 HttpContext 对象
HttpContext.Current.User = principal;
}
}
}
using System.Web;
using System.Text.RegularExpressions;
using System.Configuration;
using System.Collections;
using System.Web.Security;
using System.Security.Principal;
using System.IO;
namespace BLL
{
/// <summary>
/// MyHttpModule 的摘要说明。
/// </summary>
public class MyHttpModule : IHttpModule
{
public void Init(HttpApplication app)
{
app.AuthenticateRequest += new EventHandler(app_AuthenticateRequest);
app.EndRequest += new EventHandler(app_EndRequest);
}
void app_EndRequest(object sender, EventArgs e)
{
foreach (string key in HttpContext.Current.Response.Cookies)
{
HttpContext.Current.Response.Cookies[key].Domain = ConfigurationManager.AppSettings["domain"];//这里可以保证你的cookie都是顶级域名下的,可以实现二级域名,N级域名登录
}
}
public void Dispose() { }
private void app_AuthenticateRequest(object sender, EventArgs e)
{
// 提取窗体身份验证 cookie
string cookieName = FormsAuthentication.FormsCookieName;
HttpCookie authCookie = HttpContext.Current.Request.Cookies[cookieName];
if (null == authCookie)
{
// 没有身份验证 cookie。
return;
}
FormsAuthenticationTicket authTicket = null;
authTicket = FormsAuthentication.Decrypt(authCookie.Value);
if (null == authTicket)
{
// 无法解密 Cookie。
return;
}
// 创建票证后,为 UserData 属性指定一个
// 以管道符分隔的角色名字符串。
string[] roles = authTicket.UserData.Split(new char[] { ',' });
// 创建一个标识对象
FormsIdentity id = new FormsIdentity(authTicket);
// 该主体将通过整个请求。
GenericPrincipal principal = new GenericPrincipal(id, roles);
// 将新的主体对象附加到当前的 HttpContext 对象
HttpContext.Current.User = principal;
}
}
}