ftp-client

Properly check FTP server connection

由 蹲街弑〆低调 提交于 2019-12-04 21:10:35
问题 I open a connection to an FTP server at the start of my program. Before I perform operations on the server I want to check if the connection was successfully established. The easiest fast manner so if the connection is gone, I will try to connect again. I used this code to do this: private boolean checkConnection() { try { boolean success = ftpClient.login(user_name, password); if(success) return true; else return false; } } But this method throws a NullPointer exception when the connection

Loading file contents from FTP to ListBox

由 故事扮演 提交于 2019-12-04 18:34:53
I face an error when I try to load a contents of a file from FTP to ListBox . Form1 (Photo1) Ftp Home Including All Ftp Server File's (Photo2) Error issue (Photo3), Error Happen When Press in "Ann File" (Button) Form1 Code (Form Class) Imports System.IO Imports System.Net Public Class Form1 Dim client As New Net.WebClient Dim streamreaddder As IO.StreamReader Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load End Sub Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click ListBox1.Items.Clear() Dim ftp As FtpWebRequest = DirectCast(WebRequest

FTP Connection Timed out 421 : parser error

由 ▼魔方 西西 提交于 2019-12-04 13:39:35
The question has beed edited. I am trying to list all the files in a FTP directory - and though the code works fine when run in a normal Netbeans project, when using the same code in a Maven project its results in a connection timed out 421 . How can I get rid of this? Code: FTPClient ftpClient = new FTPClient(); ftpClient.connect(host, 21); ftpClient.login(user, pass); ftpClient.enterLocalPassiveMode(); ftpClient.setFileType(FTP.BINARY_FILE_TYPE); FTPClientConfig conf = new FTPClientConfig(FTPClientConfig.SYST_UNIX); ftpClient.configure(conf); inputStream = FTPUtil.downloadSingleFile

Error in FTP upload “553 Could not create file”

由 孤街浪徒 提交于 2019-12-04 12:30:56
import org.apache.commons.net.ftp.FTPClient; import org.apache.commons.net.ftp.FTPReply; import org.apache.commons.net.ftp.FTPFile; import java.io.*; public class FTPUpload{ public static boolean uploadfile(String server,String username,String Password,String source_file_path,String dest_dir){ FTPClient ftp=new FTPClient(); try { int reply; ftp.connect(server); ftp.login(username, Password); System.out.println("Connected to " + server + "."); System.out.print(ftp.getReplyString()); reply = ftp.getReplyCode(); if(!FTPReply.isPositiveCompletion(reply)) { ftp.disconnect(); System.err.println("FTP

cmd ftp mput - jpeg files differs from original file

由 [亡魂溺海] 提交于 2019-12-04 05:19:55
问题 currently im executing this batch for ftp -s: open 192.1.2.3 USER PASSWORD cd "folder" lcd "c:\folder" prompt mkdir 20140730 cd "20140730" mput *.jpeg quit During testing I was trying to mput like 10 files and everything seems fine. Now im transfering aprox. 1400 files with total size 700MB and my problem is that uploaded file is different then the original one. JPEG seems to be corrupted, on some image is lighter part another part is dark, or there are some coloured lines or parts on image..

FTP client in .netcore

由 孤街浪徒 提交于 2019-12-04 00:36:21
问题 Can I download file / list files via FTP protocol using netcoreapp1.0 ? I know, I can use FtpWebRequest or FluentFTP if I target full .net45 framework. My solution, however, is all based on .net standard 1.6 and I don't want to support full framework just to have FTP. 回答1: FtpWebRequest is now included to .NET Standard 2.0 FluentFTP library is also compatible with latest .net standard 2.0 回答2: FluentFTP now supports .NET core / .NET standard 1.6. If you run into problems please add an issue

how to delete file from ftp server using java?

由 只谈情不闲聊 提交于 2019-12-03 23:30:33
How can I delete a file from an ftp server using a java program? I am successfully able to upload files on the ftp using the following code: public static void main(String[] args) throws IOException { // TODO Auto-generated method stub String s = "ftp://username:password@ftpclient:21/text.txt;type=i"; URL u = new URL(s); URLConnection uc = u.openConnection(); BufferedOutputStream bos = new BufferedOutputStream(uc.getOutputStream()); bos.write(67); bos.close(); System.out.println("Done"); } But how do i delete files from this ftp server? Any help will be greatly appreciated......... Thanks in

How does Dropbox work? [closed]

由 可紊 提交于 2019-12-03 07:22:32
问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 3 years ago . How does Dropbox work? Is it just an FTP client with an easy-to-use web interface and support for many plarforms? What makes it so useful to programmers, even for those who are working on web-based applications and who have FTP access to a server by default? Does Dropbox come with

How does Dropbox work? [closed]

由 怎甘沉沦 提交于 2019-12-02 22:10:32
How does Dropbox work? Is it just an FTP client with an easy-to-use web interface and support for many plarforms? What makes it so useful to programmers, even for those who are working on web-based applications and who have FTP access to a server by default? Does Dropbox come with an improved algorithm to facilitate file transfer for a better speed? What is the difference between an FTP client and Dropbox from a programmer's point of view? Jono FTP is just a way of copying files. And copying is not the same as synchronizing, which I believe is Dropbox's biggest strength. Dropbox is a multiway

How can I download the oldest file of an FTP server? [duplicate]

由 拈花ヽ惹草 提交于 2019-12-02 12:18:11
问题 This question already has an answer here : Download the latest file from an FTP server (1 answer) Closed last year . How can I download the oldest file of an FTP server? FtpWebRequest request = (FtpWebRequest)WebRequest.Create("ftp://192.168.47.1/DocXML"); request.Method = WebRequestMethods.Ftp.ListDirectory; request.Credentials = new NetworkCredential("Igor", ""); FtpWebResponse response = (FtpWebResponse)request.GetResponse(); Stream responseStream = response.GetResponseStream();
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