后台线程读取指定的web.config

//读取配置文件，订单地址修改接口地址
            ExeConfigurationFileMap configMap = new ExeConfigurationFileMap();
            configMap.ExeConfigFilename = System.AppDomain.CurrentDomain.BaseDirectory + @"Server\Web.config";
            Configuration config = ConfigurationManager.OpenMappedExeConfiguration(configMap, ConfigurationUserLevel.None);
            string url = config.AppSettings.Settings["orderStatusSyncUrl"].Value;