用perl抓取cookies

#!/usr/bin/perl -w
use strict;
use LWP::UserAgent;
use HTTP::Cookies;
use HTTP::Request::Common;

my $cookies = HTTP::Cookies->new(
file => "cookies.txt",
autosave => 1,
);
my $ua = LWP::UserAgent->new();
$ua->cookie_jar($cookies);

my $req = HTTP::Request->new(GET => "http://www.afeng.org/");
my $resp = $ua->request($req);
if (( $resp->code() >= 200 ) && ($resp->code() < 400)) {
print "yes\n";
} else {
print "Error: ". $resp->status_line. "\n";
}