ASP.NET下使用xml反序列化、缓存依赖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>

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