首次提交：添加src文件夹代码

Cowain.Bake.Communication/FTP/FTPElapsedDelete.cs

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+using Cowain.Bake.Common;
+using Cowain.Bake.Common.Core;
+using System;
+using System.IO;
+using System.Timers;
+using Unity;
+
+namespace Cowain.Bake.Communication.FTP
+{
+    //定时删除文件
+    public class FTPElapsedDelete
+    {
+        Timer timer;
+        string _deleteFilePath;
+        int _intervalDays;
+        public string Name { get; set; }
+        public IUnityContainer _unityContainer { get; set; }
+        public FTPElapsedDelete(IUnityContainer unityContainer)
+        {
+            _unityContainer = unityContainer;
+        }
+
+        public void Start(string filePath, int intervalDays)
+        {
+            _deleteFilePath = filePath;
+            _intervalDays = intervalDays;
+            CreateTimer();
+        }
+
+        void CreateTimer()
+        {
+            // 创建定时器并设置时间间隔为一天
+            //timer = new Timer();
+            timer = new Timer(TimeSpan.FromHours(12).TotalMilliseconds); //一天执行二次删除，一次就够了，怕晚上不上班
+
+            //timer.Interval = 10 * 1000; // 一个小时
+            timer.Elapsed += TimerElapsedDeleteFiles;
+            timer.Start();
+        }
+
+        public void Stop()
+        {
+            if (timer != null)
+            {
+                timer.Stop();
+                timer.Elapsed -= TimerElapsedDeleteFiles;
+                timer.Dispose();
+                timer = null;
+            }
+        }
+
+        //可配置定期删除日志文件
+        void TimerElapsedDeleteFiles(object sender, ElapsedEventArgs e)
+        {
+            if (Global.AppExit)
+            {
+                Stop();
+            }
+           string[] files = Directory.GetFiles(_deleteFilePath, "*", SearchOption.AllDirectories);
+            try
+            {
+                foreach (string file in files)
+                {
+                    FileInfo fileInfo = new FileInfo(file); //后期有必要再多年是否上传属性，上传了就删除
+                    TimeSpan timeDifference = DateTime.Now - fileInfo.CreationTime;
+                    if (timeDifference.TotalDays >= _intervalDays)
+                    {
+                        File.SetAttributes(file, FileAttributes.Normal);
+                        File.Delete(file);                              //"对路径“”的访问被拒绝"
+                    }
+                }
+            }
+            catch (Exception ex)
+            {
+                LogHelper.Instance.Error($"删除文件失败,_deleteFilePath:{_deleteFilePath},异常:{ex.Message}");
+            }
+        }
+    }
+}