See lwpcookbook for reference. An example: 
 my $req = HTTP::Request->new(POST => 'http://www.perl.com/cgi-bin/Bug
+Glimpse');
  $req->content_type('application/x-www-form-urlencoded');
  $req->content('match=www&errors=0');

[download]

In reply to Re: Setting Content-Type when POSTing with LWP by Moonie
in thread Setting Content-Type when POSTing with LWP by koscher

Title:
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