随笔- 119 文章- 1 评论- 2419 阅读- 77万

C#语法糖之Cookies操作类 asp.net

用法:

//声名一个数据集合
         var listString = new List<string>() { "a", "b", "c" };
         //缓存key
         string key = "cokey";
 
         //获取实例
         var cookiesManager = CookiesManager<List<string>>.GetInstance();
 
         //插入缓存
         cookiesManager.Add(key, listString, cookiesManager.Minutes * 30);//过期30分钟 
         //add有其它重载 上面是最基本的
 
         //获取
         List<string> cookiesList = cookiesManager[key];
 
         //其它方法
         cookiesManager.ContainsKey(key);
 
         cookiesManager.Remove(key);//删除
 
         cookiesManager.RemoveAll(c => c.Contains("sales_"));//删除key包含sales_的cookies
 
         cookiesManager.GetAllKey();//获取所有key

代码:

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
 
namespace SyntacticSugar
{
 
    /// <summary>
    /// ** 描述：cookies操作类
    /// ** 创始时间：2015-6-9
    /// ** 修改时间：-
    /// ** 作者：sunkaixuan
    /// ** 使用说明：
    /// </summary>
    /// <typeparam name="V">值</typeparam>
    public class CookiesManager<V> : IHttpStorageObject<V>
    {
 
        #region 全局变量
        private static CookiesManager<V> _instance = null;
        private static readonly object _instanceLock = new object();
        #endregion
 
        /// <summary>         
        /// 获取实例 （单例模式）       
        /// </summary>         
        /// <returns></returns>         
        public static CookiesManager<V> GetInstance()
        {
            if (_instance == null)
                lock (_instanceLock)
                    if (_instance == null)
                        _instance = new CookiesManager<V>();
            return _instance;
        }
 
 
        /// <summary>
        /// 添加cookies ,注意value最大4K (默认1天)
        /// </summary>
        /// <param name="key">key</param>
        /// <param name="value">value</param>
        public override void Add(string key, V value)
        {
            Add(key, value, Day);
        }
        /// <summary>
        /// 添加cookies ,注意value最大4K
        /// </summary>
        /// <param name="key"></param>
        /// <param name="value"></param>
        /// <param name="cookiesDurationInSeconds">有效时间单位秒</param>
        public void Add(string key, V value, int cookiesDurationInSeconds)
        {
            HttpResponse response = HttpContext.Current.Response;
            if (response != null)
            {
                HttpCookie cookie = response.Cookies[key];
                if (cookie != null)
                {
                    if (typeof(V) == typeof(string))
                    {
                        string setValue = value.ToString();
                        Add(key, cookiesDurationInSeconds, cookie, setValue, response);
                    }
                    else
                    {
                        System.Web.Script.Serialization.JavaScriptSerializer jss = new System.Web.Script.Serialization.JavaScriptSerializer();
                        string setValue = jss.Serialize(value);
                        Add(key, cookiesDurationInSeconds, cookie, setValue, response);
 
                    }
                }
            }
        }
 
        private void Add(string key, int cookiesDurationInSeconds, HttpCookie cookie, string setValue, HttpResponse response)
        {
            if (!string.IsNullOrEmpty(key) && cookie.HasKeys)
                cookie.Values.Set(key, setValue);
            else
                if (!string.IsNullOrEmpty(setValue))
                    cookie.Value = setValue;
            if (cookiesDurationInSeconds > 0)
                cookie.Expires = DateTime.Now.AddSeconds(cookiesDurationInSeconds);
            response.SetCookie(cookie);
        }
 
        public override bool ContainsKey(string key)
        {
            return Get(key) != null;
        }
 
        public override V Get(string key)
        {
            string value = string.Empty;
            if (context.Request.Cookies[key] != null)
                value = context.Request.Cookies[key].Value;
            if (typeof(V) == typeof(string))
            {
                return (V)Convert.ChangeType(value, typeof(V));
            }
            else
            {
                System.Web.Script.Serialization.JavaScriptSerializer jss = new System.Web.Script.Serialization.JavaScriptSerializer();
                return jss.Deserialize<V>(value);
            }
        }
 
        public override IEnumerable<string> GetAllKey()
        {
            var allKeyList = context.Request.Cookies.AllKeys.ToList();
            foreach (var key in allKeyList)
            {
                yield return key;
            }
        }
 
        public override void Remove(string key)
        {
            HttpRequest request = HttpContext.Current.Request;
            if (request != null)
            {
                HttpCookie cookie = request.Cookies[key];
                cookie.Expires = DateTime.Now.AddDays(-1);
                if (cookie != null)
                {
                    if (!string.IsNullOrEmpty(key) && cookie.HasKeys)
                        cookie.Values.Remove(key);
                    else
                        request.Cookies.Remove(key);
                }
            }
        }
 
        public override void RemoveAll()
        {
            foreach (var key in GetAllKey())
            {
                Remove(key);
            }
        }
 
        public override void RemoveAll(Func<string, bool> removeExpression)
        {
            var removeList = GetAllKey().Where(removeExpression).ToList();
            foreach (var key in removeList)
            {
                Remove(key);
            }
        }
 
        public override V this[string key]
        {
            get { return Get(key); }
        }
    }
}

using System;
namespace SyntacticSugar
{
    public abstract class IHttpStorageObject<V>
    {
 
        public int Minutes = 60;
        public int Hour = 60 * 60;
        public int Day = 60 * 60 * 24;
        public System.Web.HttpContext context = System.Web.HttpContext.Current;
        public abstract void Add(string key, V value);
        public abstract bool ContainsKey(string key);
        public abstract V Get(string key);
        public abstract global::System.Collections.Generic.IEnumerable<string> GetAllKey();
        public abstract void Remove(string key);
        public abstract void RemoveAll();
        public abstract void RemoveAll(Func<string, bool> removeExpression);
        public abstract V this[string key] { get; }
    }
}