AppSetting配置工具类

<?xml version="1.0" encoding="utf-8"?>
<!--
  有关如何配置 ASP.NET 应用程序的详细信息，请访问
  http://go.microsoft.com/fwlink/?LinkId=169433
  -->
<configuration>
  <appSettings>
    <add key="key1" value="value1"/>
  </appSettings>
</configuration>

一、缓存类

using System;
using System.Collections;
using System.Configuration;
using System.Web;
using System.Web.Caching;

namespace Common
{
    /// <summary>
    /// 缓存帮助类
    /// author:陈彦斌
    /// 时间:2019年7月14日14:25:30
    /// HttpRuntime.Cache
    /// </summary>
    public sealed class CacheHelper
    {
        /// <summary>
        /// 获取configuratio节点下appSettings中add的值
        /// </summary>
        /// <param name="key">AppSettings的键</param>
        /// <returns></returns>
        public static object GetAppSttings(string key)
        {
            return ConfigurationManager.AppSettings[key];
        }
        /// <summary>
        /// 获取当前应用程序指定CacheKey的值
        /// </summary>
        /// <param name="CacheKey">appSettings节点下add中的键</param>
        /// <returns></returns>
        public static object GetCache(string CacheKey)
        {
            Cache objCache = HttpRuntime.Cache;
            return objCache[CacheKey];
        }
        /// <summary>
        /// 设置数据缓存(慎用)
        /// </summary>
        /// <param name="CacheKey">键</param>
        /// <param name="CacheValue">值</param>
        public static void SetCache(string CacheKey,object CacheValue)
        {
            Cache objCache = HttpRuntime.Cache;
            objCache.Insert(CacheKey, CacheValue);
        }
        /// <summary>
        /// 设置数据缓存
        /// </summary>
        /// <param name="CacheKey">键</param>
        /// <param name="CacheValue">值</param>
        /// <param name="TimeOut">时间间隔</param>
        public static void SetCache(string CacheKey, object CacheValue, TimeSpan TimeOut)
        {
            Cache objCache = HttpRuntime.Cache;
            objCache.Insert(CacheKey, CacheValue, null, DateTime.MaxValue, TimeOut, CacheItemPriority.NotRemovable, null);
        }
        /// <summary>
        /// 设置数据缓存
        /// </summary>
        /// <param name="CacheKey">键</param>
        /// <param name="CacheValue">值</param>
        /// <param name="absoluteExpiration">绝对过期时间</param>
        /// <param name="slidingExpiration">时间间隔</param>
        public static void SetCache(string CacheKey, object CacheValue, DateTime absoluteExpiration, TimeSpan slidingExpiration)
        {
            Cache objCache = HttpRuntime.Cache;
            objCache.Insert(CacheKey, CacheValue, null, absoluteExpiration, slidingExpiration);
        }
        /// <summary>
        /// 移除全部缓存
        /// </summary>
        public static void RemovaAllCache()
        {
            Cache objCache = HttpRuntime.Cache;
            IDictionaryEnumerator CacheEnum = objCache.GetEnumerator();
            while (CacheEnum.MoveNext())
            {
                objCache.Remove(CacheEnum.Key.ToString());
            }
        }
        /// <summary>
        /// 移除指定键的缓存
        /// </summary>
        /// <param name="CacheKey">键</param>
        public static void RemovaAllCache(string CacheKey)
        {
            Cache objCache = HttpRuntime.Cache;
            objCache.Remove(CacheKey);
        }
    }
}

二、AppSetting配置类

using System;

namespace Common
{
    /// <summary>
    /// web.config操作类
    /// 使用前需引用程序集：System.configuration
    /// </summary>
    public sealed class ConfigHelper
    {
        /// <summary>
        /// 获取AppSettings中配置String信息
        /// </summary>
        /// <param name="key">键</param>
        /// <returns></returns>
        public static string GetConfigString(string key)
        {
            object objValue = CacheHelper.GetCache(key);
            if (objValue == null) //缓冲区没有值
            {
                objValue = CacheHelper.GetAppSttings(key);
                if (objValue != null)
                {
                    CacheHelper.SetCache(key, objValue, DateTime.Now.AddMinutes(180), TimeSpan.Zero);
                }
            }
            return objValue.ToString();
        }
        /// <summary>
        /// 获取AppSettings中配置Bool信息
        /// </summary>
        /// <param name="key">键</param>
        /// <returns></returns>
        public static bool GetConfigBool(string key)
        {
            object objValue= CacheHelper.GetAppSttings(key);
            if (StringUtil.isNullOrBlank(objValue))
            {
                try
                {
                    bool.Parse(objValue.ToString());
                    return true;
                }
                catch
                {
                    return false;
                }
            }
            return false;
        }
        /// <summary>
        /// 获取AppSettings中配置decimal信息
        /// </summary>
        /// <param name="key"></param>
        /// <returns></returns>
        public static decimal GetConfigDecimal(string key)
        {
            object objValue = CacheHelper.GetAppSttings(key);
            if (StringUtil.isNullOrBlank(objValue))
            {
                try
                {                    
                    return decimal.Parse(objValue.ToString());
                }
                catch
                {
                    return 0;
                }
            }
            return 0;
        }
        /// <summary>
        /// 获取AppSettings中配置DateTime信息,可空
        /// </summary>
        /// <param name="key">键</param>
        /// <returns></returns>
        public static DateTime? GetConfigDateTime(string key)
        {
            DateTime? DateTimeNull = null;
            object objValue = CacheHelper.GetAppSttings(key);
            if (StringUtil.isNullOrBlank(objValue))
            {
                try
                {
                    return DateTime.Parse(objValue.ToString());
                }
                catch
                {
                    return DateTimeNull;
                }
            }
            return DateTimeNull;
        }
    }
}