/// <summary>
/// 判断参数Admin是否符合数据库规范，创建用户时的数据合法性检验
/// </summary>
/// <param name="admin">要检查的Admin对象</param>
/// <returns>合法返回true，否则返回false</returns>
public static Boolean isLegalNewAdmin(Admin admin)
{
Boolean result = true;
//账号合法性检验
if (admin.User_account.Length > 64 //长于64不行
|| admin.User_account.Length < 5 //比5短也不行
|| admin.User_account == null //null不行
|| admin.User_account.Equals("") //isNotOrEmpty
)
result = false;
//密码合法性检验
if (admin.User_password.Length != 32 //长度不是32不行
|| admin.User_password.Equals("") //为空不行
|| admin.User_password == null) //是null也不行
result = false;
//登录日期检验
if (admin.User_last_login_date == null) //为空不行
result = false;
//最后登录ip检验
if (admin.User_last_login_ip == null //为空不行
|| admin.User_last_login_ip.Length < 8 //不能比8位短
|| admin.User_last_login_ip.Length > 64 //不能比64位长
|| admin.User_last_login_ip.Equals("") //为空不行
)
result = false;
//时间戳不做校验
return result;
}
/// <summary>
/// 管理员登录用函数，成功则返回对应的Admin对象，否则返回null
/// </summary>
/// <param name="admin">要验证的Admin对象</param>
/// <returns>成功返回Admin的详细信息，否则返回null</returns>
public static Admin isLegalLogin(Admin admin)
{
Admin result = null;
if (isLegalLoginInfo(admin))
{
AdminData adminData = AdminData.GetNewInstance();
result = adminData.GetAdminByAccountAndPassword(admin);
}
return result;
}
/// <summary>
/// 将ADMIN类转换为Admin类，a_id在这里没管，因为无意义。
/// </summary>
/// <param name="admin">要转换的ADMIN类对象</param>
/// <returns>等价的Admin对象</returns>
public Admin ConvertADMINToAdmin(ADMIN admin)
{
Admin result = new Admin();
result.User_id = admin.admin_id;
result.User_account = admin.admin_account;
result.User_password = admin.admin_password;
result.User_last_login_date = admin.admin_last_login_time;
result.User_last_login_ip = admin.admin_last_login_ip;
result.User_nickname = admin.admin_nickname;
result.User_timestamp = admin.admin_timestamp;
return result;
}
/// <summary>
/// 将ADMIN对象转换为Admin对象,a_id这里没管因为没意义
/// </summary>
/// <param name="admin">要转换的Admin对象</param>
/// <returns>转换后的ADMIN对象</returns>
public ADMIN ConvertAdminToADMIN(Admin admin)
{
/*数据库里就这5个*/
ADMIN result = new ADMIN();
result.admin_id = admin.User_id;
result.admin_account = admin.User_account;
result.admin_password = admin.User_password;
result.admin_last_login_time = admin.User_last_login_date;
result.admin_last_login_ip = admin.User_last_login_ip;
result.admin_nickname = admin.User_nickname;
result.admin_timestamp = admin.User_timestamp;
return result;
}
/// <summary>
/// 发布新闻
/// </summary>
/// <param name="news">要发布的新闻类</param>
/// <param name="author">作者</param>
/// <returns>成功返回true，失败返回false</returns>
public static Boolean CreateNews(News news, Admin author)
{
Boolean result = true;
if ( !isLegalNews(news) || !AdminOpr.isLegalNewAdmin(author) )
{
//数据合法性检查未通过
result = false;
}
else
{
news.Article_author = author.User_id;
NewsData newsData = NewsData.GetInstance();
result = newsData.CreateNews(news);
}
return result;
}
public Admin(Admin admin)
{
//因为隐式调用的时候，调用的永远都是父类的【无参】构造函数，所以可以这么玩儿。
this.u_id = admin.U_id;
this.user_id = admin.User_id;
this.user_account = admin.User_account;
this.user_password = admin.User_password;
this.user_nickname = admin.User_nickname;
this.user_sex = admin.User_sex;
this.user_head = admin.User_head;
this.user_isDeleted = admin.User_isDeleted;
this.user_isChecked = admin.User_isChecked;
this.user_last_login_date = admin.User_last_login_date;
this.user_last_login_ip = admin.User_last_login_ip;
this.user_timestamp = admin.User_timestamp;
}
/// <summary>
/// 根据账号密码获得数据库中的admin实例
/// </summary>
/// <param name="admin">要查找的Admin对象</param>
/// <returns>成功返回Admin对象，未找到或失败返回null</returns>
public Admin GetAdminByAccountAndPassword(Admin admin)
{
Admin result = null;
avfunEntities DataEntity = DataEntityManager.GetDataEntity();
try
{
ADMIN result_admin = (from usr in DataEntity.ADMIN
where usr.admin_account == admin.User_account
&& usr.admin_password == admin.User_password
select usr).Single();
result = ConvertADMINToAdmin(result_admin);
}
catch
{
result = null;
}
return result;
}
/// <summary>
/// 判断参数admin是否符合登录的数据要求，数据验证用数据合法性检验函数
/// </summary>
/// <param name="admin">待验证Admin对象</param>
/// <returns>符合要求返回true，否则返回false</returns>
public static Boolean isLegalLoginInfo(Admin admin)
{
Boolean result = true;
//账号合法性检验
if (admin.User_account.Length > 64 //长于64不行
|| admin.User_account.Length < 5 //比5短也不行
|| admin.User_account == null //null不行
|| admin.User_account.Equals("") //isNotOrEmpty
)
result = false;
//密码合法性检验
if (admin.User_password.Length != 32 //长度不是32不行
|| admin.User_password.Equals("") //为空不行
|| admin.User_password == null) //是null也不行
result = false;
return result;
}
/// <summary>
/// 更新管理员信息，由BLL层调用，成功返回true，失败返回fales；
/// </summary>
/// <param name="admin">要更新的管理员Admin实例</param>
/// <returns>成功返回true，失败返回false</returns>
public Boolean UpdateAdminInfo(Admin admin)
{
Boolean result = false;
avfunEntities DataEntity = DataEntityManager.GetDataEntity();
try
{
ADMIN destAdmin = ( from usr in DataEntity.ADMIN
where usr.admin_id == admin.User_id
&& usr.admin_timestamp == admin.User_timestamp
select usr).Single();
//全套更新
destAdmin.admin_id = admin.User_id;
destAdmin.admin_account = admin.User_account;
destAdmin.admin_password = admin.User_password;
destAdmin.admin_last_login_time = admin.User_last_login_date;
destAdmin.admin_last_login_ip = admin.User_last_login_ip;
destAdmin.admin_nickname = admin.User_nickname;
DataEntity.SaveChanges();
result = true;
}
catch
{
result = false;
}
return result;
}
/// <summary>
/// 根据参数中的user_id返回给定Admin的信息
/// </summary>
/// <param name="admin">要查找的Admin实例，user_id必填</param>
/// <returns>成功返回Admin类，失败返回null</returns>
public static Admin GetAdminByID(Admin admin)
{
Admin result = null;
return result;
}
/// <summary>
/// 更新管理员信息，成功返回true失败返回false
/// </summary>
/// <param name="admin">要更新的管理员</param>
/// <returns>成功true失败false</returns>
public static Boolean UpdateAdminInfo(Admin admin)
{
Boolean result = false;
if (isLegalNewAdmin(admin))
{
//数据完整性检查通过
AdminData adminData = AdminData.GetNewInstance();
result = adminData.UpdateAdminInfo(admin);
}
return result;
}
/// <summary>
/// 根据Request判断管理员是否登录，主要看Cookie，若登录了返回完整Admin对象
/// </summary>
/// <param name="httpRequest">需要判断的httpRequest</param>
/// <returns>若已登录返回完整Admin对象，否则返回null</returns>
public static Admin isLogged(HttpRequest httpRequest)
{
//构造登录用类
Admin loginAdmin = new Admin();
Admin result = null;
if (httpRequest.Cookies["adminAccount"] == null
|| httpRequest.Cookies["adminPassword"] == null
|| httpRequest.Cookies["adminAccount"].Value.Length > 64
|| httpRequest.Cookies["adminPassword"].Value.Length != 32
)
return null;
else
{
loginAdmin.User_account = httpRequest.Cookies["adminAccount"].Value;
loginAdmin.User_password = httpRequest.Cookies["adminPassword"].Value;
//登录，返回结果
if (isLegalLoginInfo(loginAdmin))
{
result = isLegalLogin(loginAdmin);
}
}
return result;
}
protected void Page_Load(object sender, EventArgs e)
{
Admin loggedAdmin = AdminOpr.isLogged(Request); //获取信息
if (!Page.IsPostBack)
{
//第一次显示
if (loggedAdmin != null) //已经登录
{
//如果已经登录
AdminLoginForm.Visible = false; //不显示登录页面
AdminLoginStatus.Text = "欢迎回来！尊敬的管理员" + loggedAdmin.User_nickname + "，3秒后自动为您转入管理员首页";
AdminLoginStatus.Visible = true;
//重定向
HtmlMeta RedirectMeta = new HtmlMeta(); //重定向用Meta标签
RedirectMeta.HttpEquiv = "refresh"; //指定行为为跳转
RedirectMeta.Content = "3;url=admin_index.aspx"; //时间为三秒，跳转到首页
this.Page.Header.Controls.Add(RedirectMeta);
}
else //没登录
{
AdminLoginForm.Visible = true;
AdminLoginStatus.Visible = false; //隐藏指示信息
}
}
else
{
//提交回来了登录信息
String AdminLoginVerifyCode = Request.Form["txtAdminVerifyCode"];
String adminAccount = Request.Form["txtAdminAccount"];
String adminPassword = Request.Form["txtAdminPassword"];
if (Session[AdminLoginVerifyCodeGenerator.strIdentify] != null &&
!Session[AdminLoginVerifyCodeGenerator.strIdentify].ToString().Equals("") && //notNullAndEmpty
AdminLoginVerifyCode != null &&
!AdminLoginVerifyCode.Equals(""))
{
//清空Session防止后退提交
Session.Remove(AdminLoginVerifyCodeGenerator.strIdentify);
//验证码校验通过
Admin loginAdmin = new Admin();
loginAdmin.User_account = adminAccount;
loginAdmin.User_password = UserOpr.MD5(adminPassword);
Admin entireAdmin = AdminOpr.isLegalLogin(loginAdmin);
if (entireAdmin != null )
{
//合法登录请求
entireAdmin.User_last_login_date = DateTime.Now; //登录时间
entireAdmin.User_last_login_ip = HttpContext.Current.Request.UserHostAddress; //登录ip
AdminOpr.UpdateAdminInfo(entireAdmin); //更新登录ip和时间
//分配cookies
HttpCookie adminAccountCookie = new HttpCookie("adminAccount");
HttpCookie adminPasswordCookie = new HttpCookie("adminPassword");
adminAccountCookie.Value = entireAdmin.User_account;
adminPasswordCookie.Value = entireAdmin.User_password;
adminAccountCookie.Expires = DateTime.Now.AddDays(1D); // 1天过期
adminPasswordCookie.Expires = DateTime.Now.AddDays(1D); //1天过期
//添加Cookie，相当于授权
Response.Cookies.Add(adminAccountCookie);
Response.Cookies.Add(adminPasswordCookie);
//UI操作
AdminLoginForm.Visible = false; //不显示登录页面
AdminLoginStatus.Text = "欢迎回来！尊敬的管理员" + entireAdmin.User_nickname + "，3秒后自动为您转入管理员首页";
AdminLoginStatus.Visible = true;
//重定向
HtmlMeta RedirectMeta = new HtmlMeta(); //重定向用Meta标签
RedirectMeta.HttpEquiv = "refresh"; //指定行为为跳转
RedirectMeta.Content = "3;url=admin_index.aspx"; //时间为三秒，跳转到首页
this.Page.Header.Controls.Add(RedirectMeta);
}
else
{
//登录请求非法
AdminLoginStatus.Text = "用户名或密码错误，请重试";
AdminLoginStatus.Visible = true;
AdminLoginForm.Visible = true;
}
}
else
{
//验证码校验失败，给出提示信息
AdminLoginStatus.Text = "验证码校验失败，请刷新验证码后重试";
AdminLoginStatus.Visible = true;
AdminLoginForm.Visible = true;
}
}
}
