ASP.NET下使用xml反序列化、缓存实现个性化配置文件的实时生效

因为一些配置属性比较多，存在多组属性，因此结合xml解析、缓存技术，实现配置文化的自动解析、存入缓存、缓存依赖实时更新配置内容。

配置文件反序列化存入缓存的核心方法：

 public Class.Settings GetSettings()
   {
       if (HttpRuntime.Cache["settings"] != null)
           return (Class.Settings)HttpRuntime.Cache["settings"];
       string rootPath = GetPath();
       #region rootPath
       if (rootPath == "")
       {
           log.Write(MsgType.Fatal, "配置文件根目录rootPath为空");
           return null;
       }
       else
       {
           if (!rootPath.EndsWith("\\"))
               rootPath += "\\";
           rootPath = rootPath + "settings\\settings.config";
       }
       #endregion
       if (!File.Exists(rootPath))
       {
           log.Write(MsgType.Fatal, "配置文件根目录rootPath为空");
           return null;
       }
       string content = File.ReadAllText(rootPath, Encoding.Default);
       Class.Settings model = PublicMethod.XmlSerialize.DeserializeXML<Class.Settings>(content);
       log.Write(MsgType.Information, "读取配置文件");
       CacheDependency cd = new CacheDependency(rootPath);
       HttpRuntime.Cache.Add("settings", model, cd, DateTime.Now.AddMinutes(5), TimeSpan.Zero, CacheItemPriority.High, null);
       return model;
   }

上面自动获取rootPath的方法：

    /// <summary>
    /// 取当前根目录的方法 
    /// </summary>
    private static string GetPath()
    {
        string rootPath = "";
        System.Diagnostics.Process p = System.Diagnostics.Process.GetCurrentProcess();
        //WebDev.WebServer      visual studio web server
        //xxx.vhost             Winform
        //w3wp                  IIS7
        //aspnet_wp             IIS6
        //iisexpress            vs2013
        string processName = p.ProcessName.ToLower();
        if (processName == "aspnet_wp" || processName == "w3wp" || processName == "webdev.webserver" || processName == "iisexpress")
        {
            if (System.Web.HttpContext.Current != null)
                rootPath = System.Web.HttpContext.Current.Server.MapPath("~/");
            else //当控件在定时器的触发程序中使用时就为空
            {
                rootPath = System.AppDomain.CurrentDomain.BaseDirectory;
            }
        }
        return rootPath;
    }

Settings实体类的定义，要注意，这里的实体类要和settings配置文件对应，否则反序列化会出错：

[XmlRoot(Namespace = "", IsNullable = false, ElementName = "settings")]
public class Settings
{
    #region 属性
    [XmlElement("logger")]
    public LoggerConfig logger { get; set; }
    #endregion
    #region 子类
    [XmlType(TypeName = "logger")]
    public class LoggerConfig
    {
        public string loglevel { get; set; }
        public string savepath { get; set; }
    }  
    #endregion
}

settings.config的内容实例

    <?xml version='1.0' encoding='utf-8'?>
    <settings>
      <logger>
        <loglevel>0</loglevel>
        <savepath>d:\log</savepath>
      </logger>
        <queryurl>http://11.56.254.234:88/shashachaxunserver/shashachaxun</queryurl>
        <receiveurl>http://172.16.1.131:88/ThirdPay/ChinaUMS/xml.aspx</receiveurl>
        <turnurl>http://172.16.1.131:88/ThirdPay/ChinaUMS/query.aspx</turnurl>
      </chinaums>
    </settings>

原文链接http://huisky.com/blog/17011922322264