Website Perl Script fails with json module

Question

I want to run a perl script which uses JSON on my website. I've tested the following script in the cgi-bin folder with success:

#!/usr/local/bin/perl

print "Content-Type: text/html \n\n";
print "<h1 align=center>\n";
print "Welcome to my website\n";
print "</h1>\n";

But as soon as I include the JSON module, the website's CMS (OpenCart) reverts to a "Page cannot be found" error:

#!/usr/local/bin/perl

use JSON;

print "Content-Type: text/html \n\n";
print "<h1 align=center>\n";
print "Welcome to my website\n";
print "</h1>\n";

A rep from the website host confirmed JSON is installed on the (linux) server

Am I using the correct syntax to include JSON in my script?

Can you find the CMS logs and see what the exact error from Perl was? That, or simply run your script on command line — DVK, Jun 18 '13 at 19:27
Also, check if you have JSON or JSON::PP installed (the latter was in the core Perl since 5.14): `perl -MJSON -e ''` and `perl -MJSON::PP -e ''` — DVK, Jun 18 '13 at 19:29
obligatory http://stackoverflow.com/questions/2165022/how-can-i-troubleshoot-my-perl-cgi-script — mob, Jun 18 '13 at 20:00
@DVK Couldn't find any logs related to the Perl script in my cgi-bin folder, but thanks for your second comment, that helped me solve this. — DirkvdL, Jun 19 '13 at 16:08
@mob I went through the valuable link, thanks, will be sure to pass it along — DirkvdL, Jun 19 '13 at 16:09

score 1 · Accepted Answer · edited May 23 '17 at 12:13

DVK commented:

Also, check if you have JSON or JSON::PP installed (the latter was in the core Perl since 5.14): perl -MJSON -e ''and perl -MJSON::PP -e ''

Thanks DVK, if I include use JSON::PP instead of use JSON, the perl script works.

I had to change some JSON-specific functions to JSON::PP functions (ie. change $json->objToJson to $json->encode) for it to work with JSON::PP.

This link also provided some help

Website Perl Script fails with json module

1 Answers1