【cookies】ASP.NET下对cookies的操作实现代码

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ASP.NET下对cookies的操作实现代码

public class BsCookie
{
//操作的cookie
private HttpCookie _theCookie;
//对应的cookie的名称
private string _cookieName;
private bool _httpOnly=true;
/// <summary>
/// 是否只允许在服务器端访问,默认只允许在服务端访问
/// </summary>
public bool HttpOnly
{
get { return _httpOnly; }
set { _httpOnly=value; }
}
private double _expireMinutes;
/// <summary>
/// Cookies有效的存放时间,以分钟表示
/// </summary>
public double ExpireMinutes
{
get { return _expireMinutes; }
set { _expireMinutes=value; }
}
public BsCookie(string name,double expireMinutes)
{
_cookieName=name;
_expireMinutes=expireMinutes;
}
/// <summary>
/// 读取对应的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>
/// 设置对应的cookie
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
private HttpCookie GetCookieResponse()
{
HttpResponse response=HttpContext.Current.Response;
if (response !=null)
{
HttpCookie cookie=response.Cookies[_cookieName];
if (cookie !=null)
{
return cookie;
}
}
return new HttpCookie(_cookieName);
}
/// <summary>
/// 仅设置主键的
/// </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);
}
_theCookie.HttpOnly=_httpOnly;
}
/// <summary>
/// 设置一组主键
/// </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()));
}
if (Math.Abs(_expireMinutes) > 1)
{
_theCookie.Expires=DateTime.Now.AddMinutes(_expireMinutes);
}
_theCookie.HttpOnly=_httpOnly;
}
/// <summary>
/// 获取单一的cookie主键值
/// </summary>
/// <param name="name"></param>
/// <param name="exMinutes">需要延长的cookie的默认时间</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();
if (Math.Abs(_expireMinutes) > 1)
{
serverCookie.Expires=DateTime.Now.AddMinutes(_expireMinutes);
}
}
return thevalue;
}
/// <summary>
/// 获取一组对应的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();
if (Math.Abs(_expireMinutes) > 1)
{
serverCookie.Expires=DateTime.Now.AddMinutes(_expireMinutes);
}
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();
if (Math.Abs(_expireMinutes) > 1 && serverCookie !=null)
{
serverCookie.Expires=DateTime.Now.AddMinutes(_expireMinutes);
}
}
return result;
}
}

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