通过Via Perl Net :: FTP上传的图像损坏

Question

Why am I always getting corrupted image file when uploading to FTP server? .gif image doesn't get corrupted, only .jpeg / jpg and .png get corrupted.

sub png{
    my $ftp=Net::FTP->new($fhost)or die &ftpErr;
    $ftp->login($hostname, $hostpass);
    my $img=$ftp->put("$file");
    $ftp->get($img);
    $ftp->quit;
    our $image="$img";
    our $shot=$window->Photo(-format=>'png',-file=>"$image");
    $window->Label(-relief=>'ridge',-image=>$shot,-width=>50,-height=>50)->pack(-anchor=>'n');
}
sub jpeg{
    my $ftp=Net::FTP->new($fhost)or die &ftpErr;
    $ftp->login($hostname, $hostpass);
    my $img=$ftp->put("$file");
    $ftp->get($img);
    $ftp->quit;
    our $image="$img";
    our $shot=$window->Photo(-format=>'jpeg',-file=>"$image");
    $window->Label(-relief=>'ridge',-image=>$shot,-width=>50,-height=>50)->pack(-anchor=>'n');
}

Answer 1

You are transferring the files in the default mode, which is ASCII. This mode translates line ends. To transfer binary files use binary mode:

  $ftp->binary;
  $ftp->put(...);
  $ftp->get(...);