利用XML序列化和Asp.Net Web缓存实现站点配置文件

<?xml version="1.0" encoding="utf-8"?>
<SimpleBizConfig xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
  <ID>12</ID>
  <Key>MyKey</Key>
  <ListSimple>
    <string>简单</string>
    <string>list</string>
    <string>集合</string>
  </ListSimple>
</SimpleBizConfig>

using System.Text;
using Glutton.Web.Configuration;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace WebTest.Models
{
    public class SimpleBizConfig : ISimpleConfig
    {
        /// <summary>
        /// 默认配置文件路径
        /// </summary>
        public string GetPath()
        {
            return "~/Config/SimpleBizConfig.cfg";
        }

        public string GetCacheKey()
        {
            return "~/MyConfig_SimpleBizConfig";
        }

        public SimpleBizConfig()
        {
            this.ID = 1;
            this.Key = "MyKey";
            this.ListSimple = new List<string>();
        }

        public int ID { get; set; }

        public string Key { get; set; }

        public List<string> ListSimple { get; set; }

        internal string Desc()
        {
            StringBuilder sb = new StringBuilder();
            sb.Append("类型：SimpleBizConfig").Append("<br/>");

            sb.Append("ID = " + this.ID.ToString()).Append("<br/>");
            sb.Append("Key = " + this.Key).Append("<br/>");

            sb.Append("list").Append("<br/>");

            for (int i = 0; i < this.ListSimple.Count; i++)
            {
                sb.Append("index:" + i.ToString() + ",value:" + ListSimple[i]).Append("<br/>");
            }

            return sb.ToString();
        }
    }
}

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using System.Web;
using System.Web.Caching;
using System.Xml.Serialization;

namespace Glutton.Web.Configuration
{
    public interface ISimpleConfig
    {
        string GetPath();

        string GetCacheKey();
    }

    public class ConfigManager
    {
        public static T GetConfig<T>() where T : class ,ISimpleConfig, new()
        {
            T tmpT = new T();
            string cacheKey = tmpT.GetCacheKey();

            //先尝试从cache中取数据
            T t = GetFromCache<T>(cacheKey);//很郁闷，没有静态泛型接口

            if (t != null)
            {
                return t;
            }

            //cache没有数据，直接读配置文件
            XmlSerializer xmlSerializer = new XmlSerializer(typeof(T));

            string configFilePath = HttpContext.Current.Server.MapPath(tmpT.GetPath());

            if (!File.Exists(configFilePath))
            {
                //文件不存在，初始化，这里需要配置文件类实现默认的初始化动作
                using (TextWriter writer = new StreamWriter(configFilePath))
                {
                    t = new T();
                    xmlSerializer.Serialize(writer, t);
                }
            }
            else
            {
                using (FileStream fs = new FileStream(configFilePath, FileMode.Open))
                {
                    t = xmlSerializer.Deserialize(fs) as T;
                }
            }

            //存到缓存里面去，依赖web缓存的文件依赖功能实现监控配置文件修改
            SetToCache<T>(cacheKey, configFilePath, t);

            return t;
        }

        private static void SetToCache<T>(string cacheKey, string configFilePath, T t) where T : class ,new()
        {
            HttpRuntime.Cache.Insert(cacheKey, t, new CacheDependency(configFilePath), //文件依赖过期
                Cache.NoAbsoluteExpiration, Cache.NoSlidingExpiration, CacheItemPriority.NotRemovable, null);
        }

        private static T GetFromCache<T>(string cacheKey) where T : class ,new()
        {
            return HttpRuntime.Cache[cacheKey] as T;
        }
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using Glutton.Web.Configuration;
using WebTest.Models;

namespace WebTest.Controllers
{
    public class HomeController : Controller
    {
        public ActionResult Index()
        {
            return View();
        }

        public ActionResult About()
        {
            ViewBag.Message = "Your application description page.";

            return View();
        }

        public ActionResult Contact()
        {
            ViewBag.Message = "Your contact page.";

            return View();
        }

        public string TestCfg()
        {
            return ConfigManager.GetConfig<SimpleBizConfig>().Desc();
        }
    }
}