public static IHostBuilder CreateHostBuilder(string[] args) =>
      Host.CreateDefaultBuilder(args)
     .UseServiceProviderFactory(new AutofacServiceProviderFactory())
     .ConfigureAppConfiguration((hostingContext, config) =>
     {
         #region Configuration
         config.AddJsonFile(ConfigFileHelper.GetFilePath("configs/ipratelimit.json", Environment.CurrentDirectory), optional: true, reloadOnChange: true);
         #endregion
     })
     .ConfigureWebHostDefaults(webBuilder =>
     {
     #region 加载启动文件
     var configuration = new ConfigurationBuilder().SetBasePath(Environment.CurrentDirectory)
                           .AddJsonFile(ConfigFileHelper.GetFilePath("configs/host.json", Environment.CurrentDirectory))
                           .Build();
     #endregion
     #region 启动项
     webBuilder.UseStartup<Startup>()
                   .UseUrls(configuration["urls"])
                   .ConfigureAppConfiguration((hostingContext, config) =>
                   {
                       #region json 配置信息
                       config.AddCommandLine(args);
                       #endregion
                   })
                   .ConfigureLogging((hostingContext, builder) =>
                   {
                       #region 日志信息
                       //clear all previously registered providers
                       builder.ClearProviders();
                       //过滤掉系统默认的一些日志
                       builder.AddFilter("System", LogLevel.Error);
                       builder.AddFilter("Microsoft", LogLevel.Error);
                       builder.AddFilter("Microsoft.Hosting.Lifetime",LogLevel.Error);
                       #region Log4Net配置文件
                       Panda.Framework.Helper.ConsoleHelper.WriteSuccessLine($"start success:{ configuration["urls"]  }");
                       var file = Panda.Framework.Configs.ConfigFileHelper.GetFilePath(configuration["log4net"], AppDomain.CurrentDomain.BaseDirectory);
                       if (!File.Exists(file))
                       {
                           file = System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, configuration["log4net"]);
                       }
                       builder.AddLog4Net(file);
                       Panda.Framework.Helper.ConsoleHelper.WriteSuccessLine($"load log4net success:{file}");
                       #endregion
                       #endregion
                   });
         #endregion
     });