PrintService/POSCorePrint/Program.cs

using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Hosting;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Threading;
using System.Threading.Tasks;

namespace POSCorePrint
{
    class Program
    {
        //private static Dictionary<string, Printer> printerList = new Dictionary<string, Printer>();

        static async Task Main(string[] args)
        {
            //add by liuwz 2019-12-26 解决linux下时间格式的问题
            var culture = CultureInfo.CreateSpecificCulture("zh-CN");
            var dateformat = new DateTimeFormatInfo()
            {
                ShortTimePattern = "HH:mm:ss",
                LongTimePattern = "HH:mm:ss",
                ShortDatePattern = "yyyy-MM-dd",
                LongDatePattern = "yyyy-MM-dd",
                FullDateTimePattern = "yyyy-MM-dd HH:mm:ss"
            };
            culture.DateTimeFormat = dateformat;
            CultureInfo.DefaultThreadCurrentUICulture = culture;
            CultureInfo.DefaultThreadCurrentCulture = culture;

            var builder = new ConfigurationBuilder().SetBasePath(Directory.GetCurrentDirectory()).AddJsonFile("appsettings.json", optional: false, reloadOnChange: true);
            Constant.Configuration = builder.Build();
            Constant.ConnectionString = Constant.Configuration["Config:connectionString"];
            Constant.PrintBackTime = double.Parse(Constant.Configuration["taskTimes:printBackTime"]);
            Constant.SaveHisDataDays = double.Parse(Constant.Configuration["taskTimes:saveHisDataDays"]);
    


            var hostBuilder = new HostBuilder()
                .ConfigureServices(serviceCollection =>
                {
                    //注册我们的服务接口
                    serviceCollection.AddSingleton<IHostedService, MyService>();
                });
            await hostBuilder.RunConsoleAsync();
        }
    }

    class MyService : IHostedService
    {
        public Task StartAsync(CancellationToken cancellationToken)
        {
            return Task.Run(() =>
            {
                Console.WriteLine($"{DateTime.Now.ToString()}:开启打印任务:" + DateTime.Now.ToString());

                TaskStart taskStart = new TaskStart();
                taskStart.Start();
            });
        }

        public Task StopAsync(CancellationToken cancellationToken)
        {
            return Task.Run(() =>
            {
                Console.WriteLine($"{DateTime.Now.ToString()}:关闭打印任务:" + DateTime.Now.ToString());
            });
        }
    }
}