PLT-PDA/Admin.Core.Api/Program.cs

using Autofac.Extensions.DependencyInjection;
using Microsoft.AspNetCore.Hosting;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading.Tasks;

namespace Admin.Core.Api
{
    /// <summary>
    /// Program
    /// </summary>
    public class Program
    {
        /// <summary>
        /// Main
        /// </summary>
        /// <param name="args"></param>
        public static void Main(string[] args)
        {
            CreateHostBuilder(args)
             // 生成承载 web 应用程序的 Microsoft.AspNetCore.Hosting.IWebHost。Build是WebHostBuilder最终的目的，将返回一个构造的WebHost，最终生成宿主。
             .Build()
            // 运行 web 应用程序并阻止调用线程, 直到主机关闭。
            // ※※※※ 有异常，查看 Log 文件夹下的异常日志 ※※※※  
             .Run();
        }

        /// <summary>
        /// CreateHostBuilder
        /// </summary>
        /// <param name="args"></param>
        /// <returns></returns>
        public static IHostBuilder CreateHostBuilder(string[] args) =>
            //初始化默认主机Builder
            Host.CreateDefaultBuilder(args)
                            //Autofac服务工厂
                            .UseServiceProviderFactory(new AutofacServiceProviderFactory())
                            .ConfigureWebHostDefaults(webBuilder =>
                            {
                                webBuilder.UseIIS().UseStartup<Startup>();
                            })
                            .ConfigureLogging((hostingContext, builder) =>
                            {
                                // 1.过滤掉系统默认的一些日志
                                builder.AddFilter("System", LogLevel.Error);
                                builder.AddFilter("Microsoft", LogLevel.Error);

                                // 2.也可以在appsettings.json中配置，LogLevel节点

                                // 3.统一设置
                                builder.SetMinimumLevel(LogLevel.Error);

                                // 默认log4net.confg
                                builder.AddLog4Net(Path.Combine(Directory.GetCurrentDirectory(), "Log4net.config"));
                            });
    }
}