ASP.NET 對cookies的操作
public class BsCookie
{
//操作的cookie
private HttpCookie _theCookie;
//對應的cookie的名稱
private string _cookieName;
private bool _httpOnly = true;
/// <summary>
/// 是否只允許在服務器端訪問,默認只允許在服務端訪問
/// </summary>
public bool HttpOnly
{
get { return _httpOnly; }
set { _httpOnly = value; }
}
private double _expireMinutes;
/// <summary>
/// Cookies有效的存放時間,以分鐘表示
/// </summary>
public double ExpireMinutes
{
get { return _expireMinutes; }
set { _expireMinutes = value; }
}
public BsCookie(string name,double expireMinutes)
{
_cookieName = name;
_expireMinutes = expireMinutes;
}
/// <summary>
/// 讀取對應的cookie
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
private HttpCookie GetCookieReq()
{
HttpRequest request = HttpContext.Current.Request;
if (request != null)
{
HttpCookie cookie = request.Cookies[_cookieName];
if (cookie != null)
{
return cookie;
}
}
return null;
}
/// <summary>
/// 設置對應的cookie
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
private HttpCookie GetCookieResponse()
{
HttpResponse response = HttpContext.Current.Response;
HttpCookie cookie = GetCookieReq();
if (cookie != null)
{
string value = cookie.Value;
cookie = response.Cookies[_cookieName];
cookie.Value = value;
}
else
{
cookie = new HttpCookie(_cookieName);
cookie.HttpOnly = _httpOnly;
response.Cookies.Add(cookie);
}
if (Math.Abs(_expireMinutes) > 1 && cookie != null)//在存在的情況的下，延長過期日期
{
cookie.Expires = DateTime.Now.AddMinutes(_expireMinutes);
}
return cookie;
}
/// <summary>
/// 僅設置主鍵的
/// </summary>
/// <param name="name"></param>
/// <param name="value"></param>
/// <param name="exMinutes"></param>
public void SetCookie(string value)
{
_theCookie = GetCookieResponse();
_theCookie.Value = HttpUtility.HtmlEncode(AllCommon.Encrypt(value));
if (Math.Abs(_expireMinutes) > 1)
{
_theCookie.Expires = DateTime.Now.AddMinutes(_expireMinutes);
}
}
/// <summary>
/// 設置一組主鍵
/// </summary>
/// <param name="name"></param>
/// <param name="keys"></param>
/// <param name="exMinutes"></param>
public void SetCookie(Hashtable keys)
{
_theCookie = GetCookieResponse();
foreach (DictionaryEntry de in keys)
{
_theCookie.Values[de.Key.ToString()] = HttpUtility.HtmlEncode(AllCommon.Encrypt(de.Value.ToString()));
}
}
/// <summary>
/// 獲取單一的cookie主鍵值
/// </summary>
/// <param name="name"></param>
/// <param name="exMinutes">需要延長的cookie的默認時間</param>
/// <returns></returns>
public string GetCookie()
{
_theCookie = GetCookieReq();
if (_theCookie == null)
{
return string.Empty;
}
string thevalue = AllCommon.Decrypt(HttpUtility.HtmlDecode(_theCookie.Value));
if (thevalue.Length > 0)
{
HttpCookie serverCookie = GetCookieResponse();
}
return thevalue;
}
/// <summary>
/// 獲取一組對應的cookie值
/// </summary>
/// <param name="name"></param>
/// <param name="exMinutes"></param>
/// <returns></returns>
public Hashtable GetCookiesKeys()
{
_theCookie = GetCookieReq();
if (_theCookie == null)
{
return null;
}
string[] keys = _theCookie.Values.AllKeys;
if (keys.Length > 0)
{
Hashtable keyHash = new Hashtable();
foreach (string key in keys)
{
keyHash.Add(key, AllCommon.Decrypt(HttpUtility.HtmlDecode(_theCookie.Values[key])));
}
HttpCookie serverCookie = GetCookieResponse();
return keyHash;
}
return null;
}
/// <summary>
/// 获取一组里面的单一个值
/// </summary>
/// <param name="keyname"></param>
/// <param name="exMinutes"></param>
/// <returns></returns>
public string GetCookieKV(string keyname)
{
_theCookie = GetCookieReq();
if (_theCookie == null)
{
return string.Empty;
}
string result=AllCommon.Decrypt(HttpUtility.HtmlDecode(_theCookie.Values[keyname]));
if (result.Length > 0)
{
HttpCookie serverCookie = GetCookieResponse();
}
return result;
}
/// <summary>
/// 清除對應的cookie
/// </summary>
public void clearCookie()
{
HttpCookie serverCookie = GetCookieResponse();
if (serverCookie != null)
{
serverCookie.Expires = DateTime.Now.AddDays(-1.0d);
}
}
}