C # Implementation Development Windows service implementation automatically download files from the FTP server (self-setting sub/Time execution)

Recently in doing a daily fixed-point from FTP automatically download the program. XML and update the functionality to the database. The first thought is to use the FileSystemWatcher to monitor whether the files downloaded to a directory change, if the change is to do the appropriate action, and then use the timer to set the interval for how long to download. And then I thought about it. Use the WINDWOS service to achieve it.

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Log logs executed:

INFO-2016/5/24 0:30:07--Log content is: 0/30/7 time trigger info-2016/5/24 1:30:07--log content is: 1/30/7 for time Trigger info-2016/5/24 2:30:07-- The log content is: 2/30/7 time trigger info-2016/5/24 3:30:07--log content is: 3/30/7 time trigger info-2016/5/24 4:30:07--log content: 4/30/ 7 Time trigger info-2016/5/24 5:30:07--log content is: 5/30/7 time trigger info-2016/5/24 6:30:07--log content is: 6/30/7 for TIME Trigger INFO-2016/5/24 7:30:07--log content is: 7/30/7 time trigger info-2016/5/24 7:30:07--log content is: timerevent 01info-2016/5/24 7:30:07--log content: TimerEvent 01: Get a total of 77 program list information successfully. INFO-2016/5/24 7:31:08--Log content is: The server and the local program list information compared to start. INFO-2016/5/24 7:31:08--Log content is: Get the program list to be updated a total of 77 info-2016/5/24 7:31:08--log content is: Fileevent 01:btv-1 (HD). The download of the. xml file starts again. INFO-2016/5/24 7:31:08--Log content is: Fileevent 01:btv-1 (HD). xml file content was changed and re-downloaded successfully on 2016/05/24 00:01. INFO-2016/5/24 7:31:08--Log content is: Fileevent 01:btv-1 (HD). The modification time after download of the XML file starts with the server modification time synchronization. INFO-2016/5/24 7:31:08--Log content is: Fileevent 01:btv-1 (HD). The modified time after download of the XML file has been successfully synchronized with the server modification time. INFO-2016/5/24 7:31:08--Log content is: Fileevent 02:cctv-1 (HD). xml file re-download begins. INFO-2016/5/24 7:31:08--Log content is: Fileevent 02:cctv-1 (HD). XML textContent was changed and re-downloaded successfully on 2016/05/24 00:01. INFO-2016/5/24 7:31:08--Log content is: Fileevent 02:cctv-1 (HD). The modification time after download of the XML file starts with the server modification time synchronization. INFO-2016/5/24 7:31:08--Log content is: Fileevent 02:cctv-1 (HD). The modified time after download of the XML file has been successfully synchronized with the server modification time. INFO-2016/5/24 7:31:33--Log content is: Fileevent 77: Heilongjiang satellite TV (HD). The XML file is re-downloaded to start. INFO-2016/5/24 7:31:33--Log content is: Fileevent 77: Heilongjiang satellite TV (HD). The contents of the XML file were changed and re-downloaded successfully on 2016/05/24 00:01. INFO-2016/5/24 7:31:33--Log content is: Fileevent 77: Heilongjiang satellite TV (HD). The modification time after the XML file download begins with the server modification time synchronization. INFO-2016/5/24 7:31:33--Log content is: Fileevent 77: Heilongjiang satellite TV (HD). The modification time after the XML file download has started to synchronize successfully with the server modification time. INFO-2016/5/24 8:31:08--Log content is: 8/31/8 time trigger info-2016/5/24 9:31:08--log content is: 9/31/8 for time Trigger info-2016/5/24 10:31:08-- The log content is: 10/31/8 time trigger info-2016/5/24 11:31:08--log content is: 11/31/8 time trigger info-2016/5/24 12:31:08--log content: 12/31/ 8 time trigger info-2016/5/24 13:31:08--log content is: 13/31/8 time trigger info-2016/5/24 14:31:08--log content is: 14/31/8 for TIME Trigger INFO-2016/5 /24 15:31:08--Log content is: 15/31/8 time trigger info-2016/5/24 16:31:08--log content is: 16/31/8 time trigger info-2016/5/24 17:31:08--log content as : 17/31/8 for TIME Trigger INFO-2016/5/24 18:31:08--log content is: 18/31/8 time trigger info-2016/5/24 19:31:08--log content is: 19/31/8 time trigger info-2016/5/24 20:31:08--log content is: 20/ 31/8 time trigger info-2016/5/24 21:31:08--log content is: 21/31/8 time trigger info-2016/5/24 22:31:08--log content is: 22/31/ 8 time trigger info-2016/5/24 23:31:08--log content is: 23/31/8 for TIME Trigger

Implementation code:

Download Ftplib.dll and then reference references in the project

Using ftplib;using system;using system.collections.generic;using system.diagnostics;using System.IO;using system.linq;using system.serviceprocess;using system.threading;namespace Windowsservice1{public partial class service1:servicebase{private int _countfilechangeevent = 0, _counttimerevent = 0;private Thread threaddownload;public Se Rvice1 () {InitializeComponent ();} Http://blog.csdn.net/hwt0101/article/details/8514291//http://www.cnblogs.com/mywebname/articles/1244745.html http://www.cnblogs.com/jzywh/archive/2008/07/23/filesystemwatcher.html//http://www.cnblogs.com/hfzsjz/ archive/2011/01/07/1929898.html///<summary>///Service initiated operation///</summary>///<param name= "args" ></ param>protected override void OnStart (string[] args) {try{eventlog.writeentry ("Monitoring Server and local program list information thread task start");// Description of the source in the application event in the System Event Viewer Writeinlog ("Monitoring Server with local program list information thread task start", false); System.Timers.Timer t = new System.Timers.Timer ();//t.interval = 60000;      T.interval = 60 * 60 * 1000; t.elapsed + = new SysteM.timers.elapsedeventhandler (begindowload);//The event is executed at time of arrival, T.autoreset = true;//setting is performed once (false) or always (true); t. Enabled = true;//Whether the System.Timers.Timer.Elapsed event is performed; T.start ();} catch (Exception ex) {System.Diagnostics.Trace.Write (ex. Message); throw ex;}} <summary>///Timing check and execution method///</summary>//<param name= "source" ></param>//<param NA Me= "E" ></param> public void Begindowload (object source, System.Timers.ElapsedEventArgs e) {int intminute = e. Signaltime.minute;int Intsecond = E.signaltime.second;int inthours = e.signaltime.hour;//set to start executing the program 07:30 every day WriteInLog ( inthours+ "/" + Intminute + "/" + Intsecond + "Time Trigger", false), if (inthours = = 07)///timing setting, judging ticks && Intminute = = 10{try{system.timers.timer TT = (System.Timers.Timer) source;tt. Enabled = False;downloadtvlistinfo (); TT. Enabled = true;} catch (Exception err) {Writeinlog (err. Message, False);}}} Public list<channeltvlistinfo> listftpfiles (string ftpaddress, string username, string password) {list<channeltvlistinfo> listinfo = new list<channeltvlistinfo> (); using (ftpconnection FTP = New Ftpconnection (ftpaddress, username, password)) {ftp. Open (); ftp. Login (); foreach (var file in FTP.) GetFiles ("/")) {Listinfo. ADD (New channeltvlistinfo{tvname = file. Name,lastwritetime = convert.todatetime (file. LastWriteTime). ToString ("Yyyy/mm/dd hh:mm")}); Ftp. Dispose (); ftp. Close ();} return listinfo;} <summary>///Service Stop operation//</summary>protected override void OnStop () {try{threaddownload.abort (); Writeinlog ("Monitor server with local program list information thread task stop", false); System.Diagnostics.Trace.Write ("Monitor server and local program list information thread task stop"); EventLog.WriteEntry ("Monitoring Server and local program list information thread task stopped");} catch (Exception ex) {System.Diagnostics.Trace.Write (ex. Message);}} Private List<channeltvlistinfo> lstnewtvinfo, lstoldtvinfo = new list<channeltvlistinfo> ();p rivate void Downloadtvlistinfo () {_counttimerevent++; Writeinlog (String. Format ("timerevent {0}", _counttimerevent.tostring ("#00")), false); lstnewtvinfo = ListftpfiLes ("222.206.159.xx", "xx", "xx"); Writeinlog (String. Format ("timerevent {0}: A total of {1} program list information was successfully obtained. ", _counttimerevent.tostring (" #00 "), Lstnewtvinfo.count), false); lstoldtvinfo = new list<channeltvlistinfo> () ;D irectoryinfo thefolder = new DirectoryInfo (@ "D:\GoodLook\UpLoadImg\ChannelTvXML"); foreach (FileInfo nextfile in Thefolder.getfilesysteminfos ()) {Lstoldtvinfo.add (new Channeltvlistinfo {tvname = nextfile.name, LastWriteTime =      NextFile.LastWriteTime.ToString ("Yyyy/mm/dd hh:mm")}); Thread.Sleep (60000); Threaddownload = new Thread (new ThreadStart (Test)); Threaddownload.start (); Writeinlog ("The server and the local program list information are compared to start. ", false); System.Diagnostics.Trace.Write ("Thread task Start");} public void Test () {Try{var result = Lstnewtvinfo.except (Lstoldtvinfo, New Productcomparer ()). ToList (); Writeinlog ("Get a list of programs to update" + result.) Count+ "A", false), if (result. Count > 0) {foreach (var item in result) {_countfilechangeevent++; Writeinlog (String. Format ("fileevent {0}: {1} file re-download started. ", _countfilechangeevent.tostring (" #00 "), iteM.tvname), false); new Ftphelper (). Downloadftpfile ("xx", "xx", "222.206.159.xx", @ "D:\GoodLook\UpLoadImg\ChannelTvXML", item. Tvname); Writeinlog (String. Format ("fileevent {0}: {1} file contents have been {2} for {3}", _countfilechangeevent.tostring ("#00"), item. Tvname, item. LastWriteTime, "changed and re-downloaded successfully. "), false); Writeinlog (String. Format ("fileevent {0}: {1} file was downloaded after the modification time starts with the server modification time synchronization. ", _countfilechangeevent.tostring (" #00 "), item. Tvname), false); File.setlastwritetime (@ "D:\GoodLook\UpLoadImg\ChannelTvXML\" + item.) Tvname,convert.todatetime (New Ftphelper (). Getdatetimestamp ("222.206.159.xx", item. Tvname, "xx", "Quanmeiti"). XX ("Yyyy/mm/dd hh:mm tt"))); Writeinlog (String. Format ("fileevent {0}: {1}" the file was downloaded after the modification time started to synchronize successfully with server modification time. ", _countfilechangeevent.tostring (" #00 "), item. Tvname), False);}} Else{writeinlog ("No Server TV listings update", false);}} catch {}thread.sleep (60000);} <summary>///Write file operation///</summary>///<param name= "msg" > Write content </param>///<param name= " Isautodelete "> whether to delete</param>private void Writeinlog (String msg, bool isautodelete) {try{string LogFileName = @ "D:\GoodLook\UpLoadImg\ Channellog\downtvlist_ "+ DateTime.Now.ToString (" yyyyMMdd ") +" _log.txt "+" "; File path FileInfo FileInfo = new FileInfo (LogFileName), if (Isautodelete) {if (FileInfo. Exists && FileInfo. Length >= 1024x768) {FileInfo. Delete ();}} using (FileStream fs = FileInfo. OpenWrite ()) {StreamWriter SW = new StreamWriter (fs); SW. Basestream.seek (0, seekorigin.end); SW. Write ("info-" + DateTime.Now.ToString () + "--Log content is:" + msg + "\ r \ n"); SW. Flush (); SW. Close ();}} catch (Exception ex) {ex. ToString ();}}}

Implementing the download file from FTP method

<summary>///the ability to download files from an FTP server//</summary>///<param name= "UserId" ></param>///<param Name= "pwd" ></param>///<param name= "Ftpurl" >ftp address </param>///<param name= "FilePath" > </param>///<param name= "FileName" ></param>public void Downloadftpfile (String userId, string pwd, String Ftpurl, String FilePath, String fileName) {FtpWebRequest reqftp = null;  FtpWebResponse response = null;try{string Onlyfilename = path.getfilename (fileName); String downfilename = FilePath + "\ \" + onlyfilename;string URL = "ftp://" + Ftpurl + "/" + filename;if (file.exists (downfilename)) {Deletedir (downfilename);} FileStream outputstream = new FileStream (Downfilename, filemode.create); reqftp = (ftpwebrequest) ftpwebrequest.create ( New Uri (URL)); reqftp.credentials = new NetworkCredential (userId, pwd); reqftp.usebinary = True;reqftp.usepassive = true; reqftp.keepalive = True;reqftp.method = Webrequestmethods.ftp.downloadfile;response = (FtpWebResponse) rEqftp.getresponse (); Stream FtpStream = Response. GetResponseStream (); Long cl = response. Contentlength;int buffersize = 2048;int readcount;byte[] buffer = new Byte[buffersize];readcount = ftpStream.Read (buffer , 0, BufferSize), while (Readcount > 0) {outputstream.write (buffer, 0, readcount); readcount = ftpstream.read (buffer, 0, buffersize);} Ftpstream.close (); Outputstream.close (); response. Close ();} catch (Exception ex) {throw ex;}}

Setting up the WIDNWOS service does not introduce much. Such as:

C # Implementation Development Windows service implementation automatically download files from the FTP server (self-setting sub/Time execution)