Net5 WorkService 继承 Quarzt 及 Net5处理文件上传功能

Net5 版本以Core为底层非framework框架的windowservice 服务。

在VS里叫WorkService 可以以CMD方式运行也可以以Windowservice方式运行，部署简单。

Program.cs如下，是关键配置和启动项

using Microsoft.Extensions.Hosting;
using Quartz;
using WorkerService.Common;
using WorkerService.Job;
namespace WorkerService
{
    public class Program
    {
        public static void Main(string[] args)
        {
            
            CreateHostBuilder(args).Build().Run();
        }
    
        public static IHostBuilder CreateHostBuilder(string[] args) =>
            Host.CreateDefaultBuilder(args).UseWindowsService()
                .ConfigureServices((hostContext, services) =>
                {
                    #region  原生work Service
                    //自定义调度
                    //services.AddHostedService<Worker>();
                    #endregion
                    #region quartz 原始版本
                    //这个版本    trigger  job Schedule 是唯一关联，不能一个组下多个任务
                    //services.AddQuartz(q =>
                    //{
                    //    q.UseMicrosoftDependencyInjectionScopedJobFactory();
                    //    // Create a "key" for the job
                    //    var jobKey = new JobKey("HelloTestJob");
                    //    // Register the job with the DI container
                    //    q.AddJob<HelloTestJob>(opts => opts.WithIdentity(jobKey));
                    //    // Create a trigger for the job
                    //    q.AddTrigger(opts => opts
                    //        .ForJob(jobKey) // link to the HelloWorldJob
                    //        .WithIdentity("HelloTestJob-trigger") // give the trigger a unique name
                    //        .WithCronSchedule("0/1 * * * * ?")); // run every 1 seconds
                    //});
                    //services.AddQuartzHostedService(q => q.WaitForJobsToComplete = true);
                    #region quarzt 优化版本
                    //    // Register the job, loading the schedule from configuration
                    //    q.AddJobAndTrigger<HelloTestJob>(hostContext.Configuration, "0/1 * * * * ?");//每秒运行一次
                    //    q.AddJobAndTrigger<HelloTestJob2>(hostContext.Configuration, "0/1 * * * * ?");
                    #region  温湿度 SF6 红外图片上传
             
                    services.AddQuartz(q =>
                    {
                        q.UseMicrosoftDependencyInjectionScopedJobFactory();
                        //每秒 0/1 * * * * ?   每小时  0 0 * * * ?
                        // Register the job, loading the schedule from configuration
                        q.AddJobAndTrigger<TemperatureJob>(hostContext.Configuration, "0 0 * * * ?");
                        q.AddJobAndTrigger<SF6Job>(hostContext.Configuration, "0 0 * * * ?");
                        q.AddJobAndTrigger<InfraredJob>(hostContext.Configuration, "0 0 * * * ?");
                    });
                    services.AddQuartzHostedService(q => q.WaitForJobsToComplete = true);
                });
    }
   
}

原始的Host.CreateDefaultBuilder(args) 需要增加 .UseWindowsService() 支持 对windowservice

quarzt 在 NET5的nuget 中叫Quartz.Extensions.Hosting

services.AddHostedService<Worker>(); 是原始的windows定时任务版本

代码如下， 在await Task.Delay(1000, stoppingToken); 设定定时启动的毫秒数就可以了

using Microsoft.Extensions.Hosting;
using Microsoft.Extensions.Logging;
using System;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
namespace WorkerService.Job.Test
{
    public class Worker : BackgroundService
    {
        private readonly ILogger<Worker> _logger;
        public Worker(ILogger<Worker> logger)
        {
            _logger = logger;
        }
        protected override async Task ExecuteAsync(CancellationToken stoppingToken)
        {
            while (!stoppingToken.IsCancellationRequested)
            {
                _logger.LogInformation("Worker running at: {time}", DateTimeOffset.Now);
                FileStream stream = new FileStream(@"d:\aa.txt", FileMode.Create);//fileMode指定是读取还是写入
                StreamWriter writer = new StreamWriter(stream);
                writer.WriteLine("123456"+ DateTimeOffset.Now);//写入一行，写完后会自动换行
                writer.Write("abc");//写完后不会换行
                writer.WriteLine("ABC");
                writer.Close();//释放内存
                stream.Close();//释放内存
                await Task.Delay(1000, stoppingToken);
            }
        }
    }
}

quartz 原始版本（program.cs代码截图）

在目前这个quartz 3.3.3 版本中好像不能一个Key 下多个Job集成作业。所以每个job需要一个一个注册。推荐使用优化版本

quarzt 优化版本（program.cs代码截图）

对原始版本进行了封装。在每一次调用的时候会注册新的唯一实例。

以下是帮助类

using Microsoft.Extensions.Configuration;
using Quartz;
using System;
namespace WorkerService.Common
{
    public static class ServiceCollectionQuartzConfiguratorExtensions
    {
        public static void AddJobAndTrigger<T>(
            this IServiceCollectionQuartzConfigurator quartz,
            IConfiguration config, string cronSchedule)
            where T : IJob
        {
            // Use the name of the IJob as the appsettings.json key
            string jobName = typeof(T).Name;
            // Try and load the schedule from configuration
            var configKey = $"Quartz:{jobName}";
            //var cronSchedule = config[configKey];
            // Some minor validation
            if (string.IsNullOrEmpty(cronSchedule))
            {
                throw new Exception($"No Quartz.NET Cron schedule found for job in configuration at {configKey}");
            }
            // register the job as before
            var jobKey = new JobKey(jobName);
            quartz.AddJob<T>(opts => opts.WithIdentity(jobKey));
            quartz.AddTrigger(opts => opts
                .ForJob(jobKey)
                .WithIdentity(jobName + "-trigger")
                .WithCronSchedule(cronSchedule)); // use the schedule from configuration
        }
    }
}

以下是Job

using Microsoft.Extensions.Logging;
using Quartz;
using System;
using System.IO;
using System.Threading.Tasks;
namespace WorkerService.Job.Test
{
    [DisallowConcurrentExecution]
    public class HelloTestJob2 : IJob
    {
        private readonly ILogger<HelloTestJob2> _logger;
        public HelloTestJob2(ILogger<HelloTestJob2> logger)
        {
            _logger = logger;
        }
        public Task Execute(IJobExecutionContext context)
        {
            FileStream stream = new FileStream(@"d:\aa1.txt", FileMode.Create);//fileMode指定是读取还是写入
            StreamWriter writer = new StreamWriter(stream);
            writer.WriteLine("123456aaa" + DateTimeOffset.Now);//写入一行，写完后会自动换行
            writer.Write("abc");//写完后不会换行
            writer.WriteLine("ABC");
            writer.Close();//释放内存
            stream.Close();//释放内存
            return Task.CompletedTask;
        }
    }
}

程序会根据Corn 设定的运行时间定期在Task Execute(IJobExecutionContext context)方法内运行

然后就是蛮搞笑的，大伙都不用Net5 吗。写服务上传文件。遇到问题搜索NET5处理文件上传问题，居然都是空白的。 那我就只好自己写解决方案了。

客户端图片上传的HTTPHelper.cs部分代码如下

/// <summary>
        /// 上传文件
        /// </summary>
        /// <param name="url">请求地址</param>
        /// <param name="path">文件路径（带文件名）</param>
        /// <returns></returns>
        public static string HttpPostFile(string url, string path)
        {
            // 设置参数
            HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
            CookieContainer cookieContainer = new CookieContainer();
            request.CookieContainer = cookieContainer;
            request.AllowAutoRedirect = true;
            request.Method = "POST";string boundary = DateTime.Now.Ticks.ToString("X"); // 随机分隔线
            request.ContentType = "multipart/form-data;charset=utf-8;boundary=" + boundary;
            byte[] itemBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "\r\n");
            byte[] endBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--\r\n");
            int pos = path.LastIndexOf("\\");
            string fileName = path.Substring(pos + 1);
            //请求头部信息
            StringBuilder sbHeader = new StringBuilder(string.Format("Content-Disposition:form-data;name=\"file\";filename=\"{0}\"\r\nContent-Type:application/octet-stream\r\n\r\n", fileName));
            byte[] postHeaderBytes = Encoding.UTF8.GetBytes(sbHeader.ToString());
            StringBuilder builder = new StringBuilder($"Content-Disposition:form-data;name=\"subPath\"\r\n\r\ntmswechat");
            byte[] postHeaderBytestwo = Encoding.UTF8.GetBytes(builder.ToString());
            FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
            byte[] bArr = new byte[fs.Length];
            fs.Read(bArr, 0, bArr.Length);
            fs.Close();
            Stream postStream = request.GetRequestStream();
            postStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length);
            postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
            postStream.Write(bArr, 0, bArr.Length);
            postStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length);
            postStream.Write(postHeaderBytestwo, 0, postHeaderBytestwo.Length);
            postStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);
            postStream.Close();
            //发送请求并获取相应回应数据
            HttpWebResponse response = request.GetResponse() as HttpWebResponse;
            //直到request.GetResponse()程序才开始向目标网页发送Post请求
            Stream instream = response.GetResponseStream();
            StreamReader sr = new StreamReader(instream, Encoding.UTF8);
            //返回结果网页（html）代码
            string content = sr.ReadToEnd();
            return content;
        }

重点是服务端的接收，部分代码如下

try
                    {
                    var files = Request.Form.Files;
                    if (files != null)
                    {
                        var file = files[0];
                
                        var location = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase + $"Image\\" + file.FileName;
                        if (!Directory.Exists(System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase + $"Image\\")) //判断上传文件夹是否存在，若不存在，则创建
                        {
                            Directory.CreateDirectory(System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase + $"Image\\"); //创建文件夹
                        }
                        using (var stream = new FileStream(location, FileMode.Create))
                        {
                            await file.CopyToAsync(stream);
                            result = 1;
                        }
                    }
                    //using (var reader = new StreamReader(Request.Body))//从身体里读取
                    //{
                    //    var body = await reader.ReadToEndAsync(); 
                      
                    //}
                    }
                    catch (Exception e )
                    {
                        throw;
                    }

哪怕你用的是文件流上传，不是表单提交。但是你的文件依旧在Request.Form.Files 里！！！！

但你也可以通过Request.body 读到流

//using (var reader = new StreamReader(Request.Body))//从身体里读取
//{

// var body = await reader.ReadToEndAsync();

//}

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