perl wkhtmltopdf Error: Unable to write to destination
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Donavon Lerman
May 6, 2014, 7:31:13 PM5/6/14
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Hello...
I have the following code running as CGI. It starts to run and returns an empty PDF file to the browser and writes an error message to the error_log.
Does anybody have suggestions on how to solve this?
linux: Linux version 2.6.35.6-48.fc14.i686.PAE (...) (gcc version 4.5.1 20100924 (Red Hat 4.5.1-4) (GCC) ) #1 SMP Fri Oct 22 15:27:53 UTC 2010
wkhtmltopdf: wkhtmltopdf 0.10.0 rc2
perl: This is perl 5, version 12, subversion 2 (v5.12.2) built for i386-linux-thread-multi
Thank You in Advance.
~Donavon
perl CODE:
#!/usr/bin/perl
#### takes string containing HTML and outputs PDF to browser to download
#### (otherwise would output to STDOUT)
print "Content-Disposition: attachment; filename='testPDF.pdf'\n";
print "Content-type: application/octet-stream\n\n";
my $htmlToPrint = "<html>a bunch of html</html>";
### open a filehandle and pipe it to wkhtmltopdf
### *the arguments "- -" tell wkhtmltopdf to get
### input from STDIN and send output to STDOUT*
open(my $makePDF, "|-", "/usr/local/bin/wkhtmltopdf", "-", "-") || die("$!");
print $makePDF $htmlToPrint; ## sends my HTML to wkhtmltopdf which streams immediately to STDOUT
error_log message:
Loading pages (1/6)
QPainter::begin(): Returned false============================] 100%
Error: Unable to write to destination
I have the following code running as CGI. It starts to run and returns an empty PDF file to the browser and writes an error message to the error_log.
Does anybody have suggestions on how to solve this?
linux: Linux version 2.6.35.6-48.fc14.i686.PAE (...) (gcc version 4.5.1 20100924 (Red Hat 4.5.1-4) (GCC) ) #1 SMP Fri Oct 22 15:27:53 UTC 2010
wkhtmltopdf: wkhtmltopdf 0.10.0 rc2
perl: This is perl 5, version 12, subversion 2 (v5.12.2) built for i386-linux-thread-multi
Thank You in Advance.
~Donavon
perl CODE:
#!/usr/bin/perl
#### takes string containing HTML and outputs PDF to browser to download
#### (otherwise would output to STDOUT)
print "Content-Disposition: attachment; filename='testPDF.pdf'\n";
print "Content-type: application/octet-stream\n\n";
my $htmlToPrint = "<html>a bunch of html</html>";
### open a filehandle and pipe it to wkhtmltopdf
### *the arguments "- -" tell wkhtmltopdf to get
### input from STDIN and send output to STDOUT*
open(my $makePDF, "|-", "/usr/local/bin/wkhtmltopdf", "-", "-") || die("$!");
print $makePDF $htmlToPrint; ## sends my HTML to wkhtmltopdf which streams immediately to STDOUT
error_log message:
Loading pages (1/6)
QPainter::begin(): Returned false============================] 100%
Error: Unable to write to destination
Ashish Kulkarni
May 7, 2014, 5:46:06 AM5/7/14
to wkhtmltop...@googlegroups.com
Use the CentOS binary for 0.12.1 instead of using such an old version.
Donavon Lerman
May 7, 2014, 2:27:26 PM5/7/14
to wkhtmltop...@googlegroups.com
I updated to wkhtmltopdf 0.12.1-c22928d (with patched qt)
The PDF is still 0 bytes.
error_log shows:
Loading pages (1/6)
Counting pages (2/6)
Resolving links (4/6)
Loading headers and footers (5/6)
Printing pages (6/6)
Done
The PDF is still 0 bytes.
error_log shows:
Loading pages (1/6)
Counting pages (2/6)
Resolving links (4/6)
Loading headers and footers (5/6)
Printing pages (6/6)
Done
kulkarn...@gmail.com
May 8, 2014, 2:26:57 AM5/8/14
to wkhtmltop...@googlegroups.com
Does it work from the command line? If not, please post an issue with the sample HTML.
Donavon Lerman
May 9, 2014, 1:51:08 PM5/9/14
to wkhtmltop...@googlegroups.com
For those of your interested, this is the script that I finally got to work.
The rights have to be set up for wkhtmltopdf to be run correctly.
#!/usr/bin/perl
use warnings;
use strict;
use IPC::Open3;
use Symbol;
my $cmd = '/usr/local/bin/wkhtmltopdf - -';
my $err = gensym();
my $in = gensym();
my $out = gensym();
my $pdf = '';
my $pid = open3($in, $out, $err, $cmd) or die "could not run cmd : $cmd : $!\n";
my $string = '<html><head></head><body>Hello World!!!<br /><br /><br />
IMG: <img id="saveSignature1" src="data:image/gif;base64,R0lGODlhFwAPAKEAAP///wAAAMzMzLi3tywAAAAAFwAPAAACQIyPqQjtD98RIVpJ66g3hgEYDdVhjThyXSA4aLq2rgp78hxlyY0/ICAIBhu/HrEEKIZUyk4R1Sz9RFEkaIHNFgAAOw==" /></img>
</body></html>';
print $in $string;
close($in);
while( <$out> ) {
$pdf .= $_
}
# for trouble shooting
while( <$err> ) {
# print "err-> $_<br />\n";
}
# for trouble shooting
waitpid($pid, 0 ) or die "$!\n";
my $retval = $?;
# print "retval-> $retval<br />\n";
The rights have to be set up for wkhtmltopdf to be run correctly.
#!/usr/bin/perl
use warnings;
use strict;
use IPC::Open3;
use Symbol;
my $cmd = '/usr/local/bin/wkhtmltopdf - -';
my $err = gensym();
my $in = gensym();
my $out = gensym();
my $pdf = '';
my $pid = open3($in, $out, $err, $cmd) or die "could not run cmd : $cmd : $!\n";
my $string = '<html><head></head><body>Hello World!!!<br /><br /><br />
IMG: <img id="saveSignature1" src="data:image/gif;base64,R0lGODlhFwAPAKEAAP///wAAAMzMzLi3tywAAAAAFwAPAAACQIyPqQjtD98RIVpJ66g3hgEYDdVhjThyXSA4aLq2rgp78hxlyY0/ICAIBhu/HrEEKIZUyk4R1Sz9RFEkaIHNFgAAOw==" /></img>
</body></html>';
print $in $string;
close($in);
while( <$out> ) {
$pdf .= $_
}
# for trouble shooting
while( <$err> ) {
# print "err-> $_<br />\n";
}
# for trouble shooting
waitpid($pid, 0 ) or die "$!\n";
my $retval = $?;
# print "retval-> $retval<br />\n";
print "Content-Disposition: attachment; filename='testPDF.pdf'\n";
print "Content-type: application/octet-stream\n\n";
print $pdf;
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