C# WebHelper-CookieHelper，CacheHelper，SessionHelper
常用web操作工具类，记录一下，本文记录的工具类，都要求引用 System.Web
1、CookieHelper
1 /// <summary> 2 /// Cookie工具类 3 /// </summary> 4 public class CookieHelper 5 { 6 /// <summary> 7 /// 清除指定Cookie 8 /// </summary> 9 /// <param name="cookiename">cookiename</param> 10 public static void ClearCookie(string cookiename) 11 { 12 HttpCookie cookie = HttpContext.Current.Request.Cookies[cookiename]; 13 if (cookie != null) 14 { 15 cookie.Expires = DateTime.Now.AddYears(-3); 16 HttpContext.Current.Response.Cookies.Add(cookie); 17 } 18 } 19 /// <summary> 20 /// 获取指定Cookie值 21 /// </summary> 22 /// <param name="cookiename">cookiename</param> 23 /// <returns></returns> 24 public static string GetCookieValue(string cookiename) 25 { 26 HttpCookie cookie = HttpContext.Current.Request.Cookies[cookiename]; 27 string str = string.Empty; 28 if (cookie != null) 29 { 30 str = cookie.Value; 31 } 32 return str; 33 } 34 /// <summary> 35 /// 添加一个Cookie（24小时过期） 36 /// </summary> 37 /// <param name="cookiename"></param> 38 /// <param name="cookievalue"></param> 39 public static void SetCookie(string cookiename, string cookievalue) 40 { 41 SetCookie(cookiename, cookievalue, DateTime.Now.AddDays(1.0)); 42 } 43 /// <summary> 44 /// 添加一个Cookie 45 /// </summary> 46 /// <param name="cookiename">cookie名</param> 47 /// <param name="cookievalue">cookie值</param> 48 /// <param name="expires">过期时间 DateTime</param> 49 public static void SetCookie(string cookiename, string cookievalue, DateTime expires) 50 { 51 HttpCookie cookie = new HttpCookie(cookiename) 52 { 53 Value = cookievalue, 54 Expires = expires 55 }; 56 HttpContext.Current.Response.Cookies.Add(cookie); 57 } 58 }
2、SessionHelper
1 /// <summary> 2 /// Session 操作类 3 /// </summary> 4 public class SessionHelper 5 { 6 /// <summary> 7 /// 根据session名获取session对象 8 /// </summary> 9 /// <param name="name">session 名</param> 10 /// <returns></returns> 11 public static object GetSession(string name) 12 { 13 return HttpContext.Current.Session[name]; 14 } 15 /// <summary> 16 /// 设置session 17 /// </summary> 18 /// <param name="name">session 名</param> 19 /// <param name="val">session 值</param> 20 public static void SetSession(string name, object val) 21 { 22 HttpContext.Current.Session.Remove(name); 23 HttpContext.Current.Session.Add(name, val); 24 } 25 /// <summary> 26 /// 添加Session，调动有效期为20分钟 27 /// </summary> 28 /// <param name="strSessionName">Session对象名称</param> 29 /// <param name="strValue">Session值</param> 30 public static void Add(string strSessionName, string strValue) 31 { 32 HttpContext.Current.Session[strSessionName] = strValue; 33 HttpContext.Current.Session.Timeout = 20; 34 } 35 36 /// <summary> 37 /// 添加Session，调动有效期为20分钟 38 /// </summary> 39 /// <param name="strSessionName">Session对象名称</param> 40 /// <param name="strValues">Session值数组</param> 41 public static void Adds(string strSessionName, string[] strValues) 42 { 43 HttpContext.Current.Session[strSessionName] = strValues; 44 HttpContext.Current.Session.Timeout = 20; 45 } 46 47 /// <summary> 48 /// 添加Session 49 /// </summary> 50 /// <param name="strSessionName">Session对象名称</param> 51 /// <param name="strValue">Session值</param> 52 /// <param name="iExpires">调动有效期（分钟）</param> 53 public static void Add(string strSessionName, string strValue, int iExpires) 54 { 55 HttpContext.Current.Session[strSessionName] = strValue; 56 HttpContext.Current.Session.Timeout = iExpires; 57 } 58 59 /// <summary> 60 /// 添加Session 61 /// </summary> 62 /// <param name="strSessionName">Session对象名称</param> 63 /// <param name="strValues">Session值数组</param> 64 /// <param name="iExpires">调动有效期（分钟）</param> 65 public static void Adds(string strSessionName, string[] strValues, int iExpires) 66 { 67 HttpContext.Current.Session[strSessionName] = strValues; 68 HttpContext.Current.Session.Timeout = iExpires; 69 } 70 71 /// <summary> 72 /// 读取某个Session对象值 73 /// </summary> 74 /// <param name="strSessionName">Session对象名称</param> 75 /// <returns>Session对象值</returns> 76 public static object Get(string strSessionName) 77 { 78 if (HttpContext.Current.Session[strSessionName] == null) 79 { 80 return null; 81 } 82 else 83 { 84 return HttpContext.Current.Session[strSessionName]; 85 } 86 } 87 88 /// <summary> 89 /// 读取某个Session对象值数组 90 /// </summary> 91 /// <param name="strSessionName">Session对象名称</param> 92 /// <returns>Session对象值数组</returns> 93 public static string[] Gets(string strSessionName) 94 { 95 if (HttpContext.Current.Session[strSessionName] == null) 96 { 97 return null; 98 } 99 else 100 { 101 return (string[])HttpContext.Current.Session[strSessionName]; 102 } 103 } 104 105 /// <summary> 106 /// 删除某个Session对象 107 /// </summary> 108 /// <param name="strSessionName">Session对象名称</param> 109 public static void Del(string strSessionName) 110 { 111 HttpContext.Current.Session[strSessionName] = null; 112 } 113 }
3、CacheHelper
1 /// <summary> 2 /// 缓存辅助类 3 /// </summary> 4 public class CacheHelper 5 { 6 /// <summary> 7 /// 获取数据缓存 8 /// </summary> 9 /// <param name="CacheKey">键</param> 10 public static object GetCache(string CacheKey) 11 { 12 System.Web.Caching.Cache objCache = HttpRuntime.Cache; 13 return objCache[CacheKey]; 14 } 15 16 /// <summary> 17 /// 设置数据缓存 18 /// </summary> 19 public static void SetCache(string CacheKey, object objObject) 20 { 21 System.Web.Caching.Cache objCache = HttpRuntime.Cache; 22 objCache.Insert(CacheKey, objObject); 23 } 24 25 /// <summary> 26 /// 设置数据缓存 27 /// </summary> 28 public static void SetCache(string CacheKey, object objObject, TimeSpan Timeout) 29 { 30 System.Web.Caching.Cache objCache = HttpRuntime.Cache; 31 objCache.Insert(CacheKey, objObject, null, DateTime.MaxValue, Timeout, System.Web.Caching.CacheItemPriority.NotRemovable, null); 32 } 33 34 /// <summary> 35 /// 设置数据缓存 36 /// </summary> 37 public static void SetCache(string CacheKey, object objObject, DateTime absoluteExpiration, TimeSpan slidingExpiration) 38 { 39 System.Web.Caching.Cache objCache = HttpRuntime.Cache; 40 objCache.Insert(CacheKey, objObject, null, absoluteExpiration, slidingExpiration); 41 } 42 43 /// <summary> 44 /// 移除指定数据缓存 45 /// </summary> 46 public static void RemoveAllCache(string CacheKey) 47 { 48 System.Web.Caching.Cache _cache = HttpRuntime.Cache; 49 _cache.Remove(CacheKey); 50 } 51 52 /// <summary> 53 /// 移除全部缓存 54 /// </summary> 55 public static void RemoveAllCache() 56 { 57 System.Web.Caching.Cache _cache = HttpRuntime.Cache; 58 IDictionaryEnumerator CacheEnum = _cache.GetEnumerator(); 59 while (CacheEnum.MoveNext()) 60 { 61 _cache.Remove(CacheEnum.Key.ToString()); 62 } 63 } 64 }
