经常用到的Cookie操作类(C#版本)
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针对Cookie的赋值、获取、修改、删除等操作,整理的代码如下
/// <summary> /// Cookie操作类 /// Add by 成长的小猪(Jason.Song) on 2017/11/14 /// 文章来源:http://blog.csdn.net/jasonsong2008/article/details/78538050 /// </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="strValue">COOKIE对象Value值</param> public static void SetObj(string strCookieName, string strValue) { SetObj(strCookieName, 1, strValue, "", "/"); } /// <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> public static void SetObj(string strCookieName, int iExpires, string strValue) { SetObj(strCookieName, iExpires, strValue, "", "/"); } /// <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 SetObj(string strCookieName, int iExpires, string strValue, string strDomains) { SetObj(strCookieName, iExpires, strValue, strDomains, "/"); } /// <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> /// <param name="strPath">作用路径</param> public static void SetObj(string strCookieName, int iExpires, string strValue, string strDomains, string strPath) { var strDomain = SelectDomain(strDomains); var objCookie = new HttpCookie(strCookieName.Trim()) { Value = HttpUtility.UrlEncode(strValue.Trim()) }; if (strDomain.Length > 0) objCookie.Domain = strDomain; if (iExpires > 0) { objCookie.Expires = iExpires == 1 ? DateTime.MaxValue : 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> public static void SetObj(string strCookieName, int iExpires, NameValueCollection keyValue) { SetObj(strCookieName, iExpires, keyValue, "", "/"); } public static void SetObj(string strCookieName, int iExpires, NameValueCollection keyValue, string strDomains) { SetObj(strCookieName, iExpires, keyValue, strDomains, "/"); } /// <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 SetObj(string strCookieName, int iExpires, NameValueCollection keyValue, string strDomains, string strPath) { var strDomain = SelectDomain(strDomains); var objCookie = new HttpCookie(strCookieName.Trim()); foreach (var key in keyValue.AllKeys) { objCookie[key] = HttpUtility.UrlEncode(keyValue[key].Trim()); } if (strDomain.Length > 0) objCookie.Domain = strDomain; objCookie.Path = strPath.Trim(); if (iExpires > 0) { objCookie.Expires = iExpires == 1 ? DateTime.MaxValue : DateTime.Now.AddSeconds(iExpires); } HttpContext.Current.Response.Cookies.Add(objCookie); } /// <summary> /// 读取Cookie某个对象的Value值,返回Value值,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> /// <returns>Value值,如果对象本就不存在,则返回字符串null</returns> public static string GetValue(string strCookieName) { if (HttpContext.Current.Request.Cookies[strCookieName] == null) { return null; } var value = HttpContext.Current.Request.Cookies[strCookieName].Value; return HttpUtility.UrlDecode(value); } /// <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 (HttpContext.Current.Request.Cookies[strCookieName] == null) { return null; } var strObjValue = HttpContext.Current.Request.Cookies[strCookieName].Value; var strKeyName2 = strKeyName + "="; //if (strObjValue.IndexOf(strKeyName2) == -1) if (!strObjValue.Contains(strKeyName2)) return null; var 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> /// <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) { return Edit(strCookieName, strKeyName, keyValue, iExpires, "", "/"); } /// <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="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, string strPath) { return Edit(strCookieName, strKeyName, keyValue, iExpires, "", strPath); } /// <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, string strDomains, string strPath) { if (HttpContext.Current.Request.Cookies[strCookieName] == null) return null; var objCookie = HttpContext.Current.Request.Cookies[strCookieName]; objCookie[strKeyName] = HttpUtility.UrlEncode(keyValue.Trim()); if (iExpires > 0) { objCookie.Expires = iExpires == 1 ? DateTime.MaxValue : 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> public static void Del(string strCookieName) { Del(strCookieName, "", "/"); } /// <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> public static void Del(string strCookieName, string strDomains) { Del(strCookieName, strDomains, "/"); } /// <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, string strDomains, string strPath) { var strDomain = SelectDomain(strDomains); var objCookie = new HttpCookie(strCookieName.Trim()); if (strDomain.Length > 0) objCookie.Domain = strDomain; objCookie.Path = strPath.Trim(); objCookie.Expires = DateTime.Now.AddYears(-1); HttpContext.Current.Response.Cookies.Add(objCookie); } /// <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) { if (HttpContext.Current.Request.Cookies[strCookieName] == null) { return null; } var objCookie = HttpContext.Current.Request.Cookies[strCookieName]; objCookie.Values.Remove(strKeyName); if (iExpires > 0) { objCookie.Expires = iExpires == 1 ? DateTime.MaxValue : DateTime.Now.AddSeconds(iExpires); } HttpContext.Current.Response.Cookies.Add(objCookie); return "success"; } /// <summary> /// 定位到正确的域 /// </summary> /// <param name="domains"></param> /// <returns></returns> private static string SelectDomain(string domains) { var isLocalServer = false; if (domains.Trim().Length == 0) return ""; var thisDomain = HttpContext.Current.Request.ServerVariables["SERVER_NAME"]; //if (_thisDomain.IndexOf(".") < 0)//说明是计算机名,而不是域名 if (!thisDomain.Contains(".")) isLocalServer = true; var defaultDomain = "www.abc.com";//这个域名是瞎扯 var strDomains = domains.Split(';'); foreach (var t in strDomains) { if (!thisDomain.Contains(t.Trim())) continue; //区分真实域名(或IP)与计算机名 //作用域留空,否则Cookie不能写入 defaultDomain = isLocalServer ? "" : t.Trim(); break; } return defaultDomain; } }
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