public class CacheHelper { ////// 创建缓存项的文件 /// /// 缓存Key /// object对象 public static void Insert(string key, object obj) { //创建缓存 HttpContext.Current.Cache.Insert(key, obj); } ////// 移除缓存项的文件 /// /// 缓存Key public static void Remove(string key) { //创建缓存 HttpContext.Current.Cache.Remove(key); } ////// 创建缓存项的文件依赖 /// /// 缓存Key /// object对象 /// 文件绝对路径 public static void Insert(string key, object obj, string fileName) { //创建缓存依赖项 CacheDependency dep = new CacheDependency(fileName); //创建缓存 HttpContext.Current.Cache.Insert(key, obj, dep); } ////// 创建缓存项过期 /// /// 缓存Key /// object对象 /// 过期时间(分钟) public static void Insert(string key, object obj, int expires) { HttpContext.Current.Cache.Insert(key, obj, null, Cache.NoAbsoluteExpiration, new TimeSpan(0, expires, 0)); } ////// 获取缓存对象 /// /// 缓存Key ///object对象 public static object Get(string key) { if (string.IsNullOrEmpty(key)) { return null; } return HttpContext.Current.Cache.Get(key); } ////// 获取缓存对象 /// ///T对象 /// 缓存Key ///public static T Get (string key) { object obj = Get(key); return obj == null ? default(T) : (T)obj; } }