Corrupt Image File After Uploading It Using Ftp Command from Linux, with Type Ascii

Corrupt image file after uploading it using ftp command from linux, with type ASCII

transfer it as binary otherwise it will get corrupted as newlines are converted, for example.

shell ftp upload - file corrupted

use binary command to set the mode of file transfer to binary

(the binary mode transmits all eight bits per byte and thus provides less chance of a transmission error and must be used to transmit files other than ASCII files)

Apache Commons Net FTP is uploading corrupted files

Commons FTP defaults to Ascii file types. You want to set it to Binary when dealing with binary data like a ZIP file.

From http://commons.apache.org/net/api/org/apache/commons/net/ftp/FTPClient.html

The default settings for FTPClient are for it to use FTP.ASCII_FILE_TYPE , FTP.NON_PRINT_TEXT_FORMAT , FTP.STREAM_TRANSFER_MODE , and FTP.FILE_STRUCTURE . The only file types directly supported are FTP.ASCII_FILE_TYPE and FTP.BINARY_FILE_TYPE .

You want to do setFileType(FTP.BINARY_FILE_TYPE) before you send the file.

Linux Bash Ftp Automated Image Upload

FTP sends in ASCII (7-bit) mode by default; you need to send in binary mode. Add the type binary command before the put, and you'll be all set.

Unable to uploading .class file on server using FTP java

This worked:

Adding setFileType() after getting connected to server but before transfer of file.

                    ftpClient.setFileType(FTPClient.BINARY_FILE_TYPE);                 
                    String remoteFileName = file.getName();
                    if (ftpClient.storeFile(remoteFileName, inputStream)) {
                        inputStream.close();
                        System.out.println("File " + file.getName() + " uploaded to server.");
                        isUploaded = true;
                    }

Thanks a lot to EJP for helping me with this :)

CRLF tags attached upon FTP upload from a windows to Linux Server

If you want the files to be converted to *nix line endings, do not use a binary mode, use an ascii mode.

The ascii mode is the default one, so removing binary command should be enough.

Or you can explicitly use ascii command.

java downloading zip file is corrupted

Make sure you use binary mode for the FTP transfer. The fact that txt files work indicates that this is most likely your problem.

What's the point of ASCII mode in FTP?

When in doubt, read the RFC:

File-structure is the default to be
assumed if the STRUcture command has
not been used but both file and record
structures must be accepted for "text"
files (i.e., files with TYPE ASCII or
EBCDIC) by all FTP implementations.
The structure of a file will affect
both the transfer mode of a file (see
the Section on Transmission Modes) and
the interpretation and storage of the
file.

The "natural" structure of a file will
depend on which host stores the file.
A source-code file will usually be
stored on an IBM Mainframe in fixed
length records but on a DEC TOPS-20 as
a stream of characters partitioned
into lines, for example by <CRLF>. If
the transfer of files between such
disparate sites is to be useful, there
must be some way for one site to
recognize the other's assumptions
about the file.

etc etc ... In short, it is to ensure that text representations in one encoding got converted properly when transferred to hosts using a different encoding.

FTP file corrupt after download with Apache Commons Net

It seems to happen when using unescaped paths that contain spaces. E.g. C:/Documents and Settings/test

Got it solved now by using a escaped path for the spaces. Thanks for your help

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