如何将.NET Web.config工具类改写为支持长尾关键词的配置管理？

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csharppublic static class AppConfigUtil{ public static string GetAppConfig(string key) { Configuration config=System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration(~); return config.AppSettings.Settings[key].Value; }}

public static class AppConfigUtil { public static string GetAppConfig(string key) { Configuration config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~"); return config.AppSettings.Settings[key].Value; } /// <summary> /// 在web.config文件中appSettings配置节增加一对键值对 /// </summary> /// <param name="key"></param> /// <param name="val"></param> public static void UpdateAppConfig(string key, string val) { Configuration config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~"); bool exist = config.AppSettings.Settings.AllKeys.Contains(key); if (exist) { config.AppSettings.Settings.Remove(key); } config.AppSettings.Settings.Add(key, val); config.Save(ConfigurationSaveMode.Modified); ConfigurationManager.RefreshSection("appSettings"); } }