C# CookieHelper
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using System; using System.Web; using System.Collections.Specialized; namespace Utils { /// <summary> /// Cookie操作类 /// http://www.open-open.com/code/view/1421582030093 /// </summary> public static class CookieHelper { /// <summary> /// 创建COOKIE对象并赋Value值,修改COOKIE的Value值也用此方法,因为对COOKIE修改必须重新设Expires /// </summary> /// <param name="strCookieName">COOKIE对象名</param> /// <param name="iExpires">COOKIE对象有效时间(秒数),1表示永久有效,0和负数都表示不设有效时间,大于等于2表示具体有效秒数,31536000秒=1年=(60*60*24*365),</param> /// <param name="strValue">COOKIE对象Value值</param> /// <param name="strDomains">作用域,多个域名用;隔开</param> public static void Add(string strCookieName, string strValue, int iExpires = 0) { HttpCookie objCookie = new HttpCookie(strCookieName.Trim()); objCookie.Value = HttpUtility.UrlEncode(strValue.Trim()); if (iExpires > 0) { if (iExpires == 1) objCookie.Expires = DateTime.MaxValue; else objCookie.Expires = DateTime.Now.AddSeconds(iExpires); } HttpContext.Current.Response.Cookies.Add(objCookie); } /// <summary> /// 创建COOKIE对象并赋多个KEY键值 /// 设键/值如下: /// NameValueCollection myCol = new NameValueCollection(); /// myCol.Add("red", "rojo"); /// myCol.Add("green", "verde"); /// myCol.Add("blue", "azul"); /// myCol.Add("red", "rouge"); 结果“red:rojo,rouge;green:verde;blue:azul” /// </summary> /// <param name="strCookieName">COOKIE对象名</param> /// <param name="iExpires">COOKIE对象有效时间(秒数),1表示永久有效,0和负数都表示不设有效时间,大于等于2表示具体有效秒数,31536000秒=1年=(60*60*24*365),</param> /// <param name="KeyValue">键/值对集合</param> /// <param name="strDomains">作用域,多个域名用;隔开</param> /// <param name="strPath">作用路径</param> public static void Add(string strCookieName, NameValueCollection KeyValue, int iExpires = 0) { HttpCookie objCookie = new HttpCookie(strCookieName.Trim()); foreach (String key in KeyValue.AllKeys) { objCookie[key] = HttpUtility.UrlEncode(KeyValue[key].Trim()); } if (iExpires > 0) { if (iExpires == 1) objCookie.Expires = DateTime.MaxValue; else objCookie.Expires = DateTime.Now.AddSeconds(iExpires); } HttpContext.Current.Response.Cookies.Add(objCookie); } /// <summary> /// 读取Cookie某个对象的某个Key键的键值,返回Key键值,如果对象本就不存在,则返回字符串null,如果Key键不存在,则返回字符串"KeyNonexistence" /// </summary> /// <param name="strCookieName">Cookie对象名称</param> /// <param name="strKeyName">Key键名</param> /// <returns>Key键值,如果对象本就不存在,则返回字符串null,如果Key键不存在,则返回字符串"KeyNonexistence"</returns> public static string GetValue(string strCookieName, string strKeyName = "") { if (string.IsNullOrEmpty(strKeyName)) { if (HttpContext.Current.Request.Cookies[strCookieName] == null) { return null; } else { string _value = HttpContext.Current.Request.Cookies[strCookieName].Value; return HttpUtility.UrlDecode(_value); } } else { if (HttpContext.Current.Request.Cookies[strCookieName] == null) { return null; } else { string strObjValue = HttpContext.Current.Request.Cookies[strCookieName].Value; string strKeyName2 = strKeyName + "="; //if (strObjValue.IndexOf(strKeyName2) == -1) if (!strObjValue.Contains(strKeyName2)) return null; else { string _value = HttpContext.Current.Request.Cookies[strCookieName][strKeyName]; return HttpUtility.UrlDecode(_value); } } } } /// <summary> /// 修改某个COOKIE对象某个Key键的键值 或 给某个COOKIE对象添加Key键 都调用本方法,操作成功返回字符串"success",如果对象本就不存在,则返回字符串null。 /// </summary> /// <param name="strCookieName">Cookie对象名称</param> /// <param name="strKeyName">Key键名</param> /// <param name="KeyValue">Key键值</param> /// <param name="iExpires">COOKIE对象有效时间(秒数),1表示永久有效,0和负数都表示不设有效时间,大于等于2表示具体有效秒数,31536000秒=1年=(60*60*24*365)。注意:虽是修改功能,实则重建覆盖,所以时间也要重设,因为没办法获得旧的有效期</param> /// <param name="strDomains">作用域,多个域名用;隔开</param> /// <param name="strPath">作用路径</param> /// <returns>如果对象本就不存在,则返回字符串null,如果操作成功返回字符串"success"。</returns> public static string Edit(string strCookieName, string strKeyName, string KeyValue, int iExpires=0) { if (HttpContext.Current.Request.Cookies[strCookieName] == null) return null; else { HttpCookie objCookie = HttpContext.Current.Request.Cookies[strCookieName]; objCookie[strKeyName] = HttpUtility.UrlEncode(KeyValue.Trim()); if (iExpires > 0) { if (iExpires == 1) objCookie.Expires = DateTime.MaxValue; else objCookie.Expires = DateTime.Now.AddSeconds(iExpires); } HttpContext.Current.Response.Cookies.Add(objCookie); return "success"; } } /// <summary> /// 删除某个COOKIE对象某个Key子键,操作成功返回字符串"success",如果对象本就不存在,则返回字符串null /// </summary> /// <param name="strCookieName">Cookie对象名称</param> /// <param name="strKeyName">Key键名</param> /// <param name="iExpires">COOKIE对象有效时间(秒数),1表示永久有效,0和负数都表示不设有效时间,大于等于2表示具体有效秒数,31536000秒=1年=(60*60*24*365)。注意:虽是修改功能,实则重建覆盖,所以时间也要重设,因为没办法获得旧的有效期</param> /// <returns>如果对象本就不存在,则返回字符串null,如果操作成功返回字符串"success"。</returns> public static string DelKey(string strCookieName, string strKeyName, int iExpires = 0) { if (HttpContext.Current.Request.Cookies[strCookieName] == null) { return null; } else { HttpCookie objCookie = HttpContext.Current.Request.Cookies[strCookieName]; objCookie.Values.Remove(strKeyName); if (iExpires > 0) { if (iExpires == 1) objCookie.Expires = DateTime.MaxValue; else objCookie.Expires = DateTime.Now.AddSeconds(iExpires); } HttpContext.Current.Response.Cookies.Add(objCookie); return "success"; } } /// <summary> /// 删除COOKIE对象 /// </summary> /// <param name="strCookieName">Cookie对象名称</param> /// <param name="strDomains">作用域,多个域名用;隔开</param> /// <param name="strPath">作用路径</param> public static void Del(string strCookieName) { HttpCookie objCookie = new HttpCookie(strCookieName.Trim()); objCookie.Expires = DateTime.Now.AddYears(-1); HttpContext.Current.Response.Cookies.Add(objCookie); } /// <summary> /// 定位到正确的域 /// </summary> /// <param name="strDomains"></param> /// <returns></returns> private static string SelectDomain(string strDomains) { bool _isLocalServer = false; if (strDomains.Trim().Length == 0) return ""; string _thisDomain = HttpContext.Current.Request.ServerVariables["SERVER_NAME"].ToString(); //if (_thisDomain.IndexOf(".") < 0)//说明是计算机名,而不是域名 if (!_thisDomain.Contains(".")) _isLocalServer = true; string _strDomain = "www.abc.com";//这个域名是瞎扯 string[] _strDomains = strDomains.Split(';'); for (int i = 0; i < _strDomains.Length; i++) { //if (_thisDomain.IndexOf(_strDomains[i].Trim()) < 0)//判断当前域名是否在作用域内 if (!_thisDomain.Contains(_strDomains[i].Trim())) continue; else { //区分真实域名(或IP)与计算机名 if (_isLocalServer) _strDomain = "";//作用域留空,否则Cookie不能写入 else _strDomain = _strDomains[i].Trim(); break; } } return _strDomain; } } }