using System;
using System.Collections.Generic;
using System.Web;
using System.Collections;
using System.Web.Caching;
namespace DMSite.Common
{
/// <summary>
/// 服务器缓存帮助类
/// </summary>
public class CacheHelper
{
/// <summary>
/// 创建缓存项的文件依赖
/// </summary>
/// <param name="key">缓存Key</param>
/// <param name="obj">object对象</param>
/// <param name="fileName">文件绝对路径</param>
public static void InsertFile(
string key,
object obj,
string fileName)
{
//创建缓存依赖项
CacheDependency dep =
new CacheDependency(fileName);
//创建缓存
HttpRuntime.Cache.Insert(key, obj, dep);
}
/// <summary>
/// 创建缓存项过期
/// </summary>
/// <param name="key">缓存Key</param>
/// <param name="obj">object对象</param>
public static void Insert(
string key,
object obj)
{
if (obj !=
null)
{
if (IsExist(key))
{
HttpRuntime.Cache[key] =
obj;
}
else
{
int expires = ConvertHelper.ToInt(ConfigHelper.GetAppSettings(
"TimeCache"));
HttpRuntime.Cache.Insert(key, obj, null, System.Web.Caching.Cache.NoAbsoluteExpiration,
new TimeSpan(
0, expires,
0));
}
}
}
/// <summary>
/// 判断缓存对象是否存在
/// </summary>
/// <param name="strKey">缓存键值名称</param>
/// <returns>是否存在true 、false</returns>
public static bool IsExist(
string strKey)
{
return HttpRuntime.Cache[strKey] !=
null;
}
/// <summary>
/// 获取缓存对象
/// </summary>
/// <param name="key">缓存Key</param>
/// <returns>object对象</returns>
public static object GetCache(
string key)
{
if (
string.IsNullOrEmpty(key))
return null;
if (ConfigHelper.GetAppSettings(
"IsCache") ==
"false")
{
return null;
}
return HttpRuntime.Cache.Get(key);
}
/// <summary>
/// 获取缓存对象
/// </summary>
/// <typeparam name="T">T对象</typeparam>
/// <param name="key">缓存Key</param>
/// <returns></returns>
public static T Get<T>(
string key)
{
object obj =
GetCache(key);
return obj ==
null ?
default(T) : (T)obj;
}
/// <summary>
/// 移除指定数据缓存
/// </summary>
public static void RemoveCache(
string CacheKey)
{
System.Web.Caching.Cache _cache =
HttpRuntime.Cache;
_cache.Remove(CacheKey);
}
/// <summary>
/// 移除全部缓存
/// </summary>
public static void RemoveAllCache()
{
System.Web.Caching.Cache _cache =
HttpRuntime.Cache;
IDictionaryEnumerator CacheEnum =
_cache.GetEnumerator();
while (CacheEnum.MoveNext())
{
_cache.Remove(CacheEnum.Key.ToString());
}
}
}
}
转载于:https://www.cnblogs.com/damsoft/p/6100308.html
相关资源：Laravel开发-laravel-cache-helper
