perl encode_utf8必须用在utf8环境

[root@wx03 mojo]# cat test.pl
use Mojolicious::Lite;
use JSON qw/encode_json decode_json/;
use Encode;
no strict;
use JSON;
use Data::Dumper;
# /foo?user=sri
 get '/admin/api/menu' => sub {
          my $c = shift;
          print "测试更健康\n";
         open (LOG1 ,"<",'/data01/applog_backup/zj-api01-catalina.out') or die  $!;
                     while (<LOG1>) {
                                        my $phone='18072722237';
					#2016-03-09 09:35:12,380 INFO com.zjzc.thirdparty.sms.SMSUtils - Send message:您的验证码为132435，本验证码5分钟内有效。 to phoneNo:18072722237 succeed!
 
					if ( ($phone) and ($_ =~/$phone/) and ($_ =~/SMSUtils/) ){$str=$_;
 
					my $x='验证';
                                        print "\$x is $x\n";
			 		my $d=encode_utf8('验证');
                                        print "\$d is $d\n";
 
					print "1-------\$str is $str\n";
					next if ($str !~ /$d/);
					print "2--------\$str is $str\n";
					#push (@arr1 ,decode_utf8($str));
					push (@arr1 ,$str);
					}};
 
					close LOG1;
          $c->render(json =>  \@arr1 );
};
 
  app->start;
 
  [root@wx03 mojo]# morbo test.pl
Server available at http://127.0.0.1:3000
Wide character in print at /root/mojo/test.pl line 10.
测试更健康
Wide character in print at /root/mojo/test.pl line 19, <LOG1> line 1.
$x is 验证
$d is 验证
1-------$str is 2016-04-22 11:02:01,259 INFO com.zjzc.thirdparty.sms.SMSUtils - Send message:您的验证码为813231，本验证码30分钟内有效。 to phoneNo:18072722237 succeed!
 
2--------$str is 2016-04-22 11:02:01,259 INFO com.zjzc.thirdparty.sms.SMSUtils - Send message:您的验证码为813231，本验证码30分钟内有效。 to phoneNo:18072722237 succeed!
 
Wide character in print at /root/mojo/test.pl line 19, <LOG1> line 3.
$x is 验证
$d is 验证
1-------$str is 2016-04-22 11:02:01,259 INFO com.zjzc.thirdparty.sms.SMSUtils - Send message:您的813231，本30分钟内有效。 to phoneNo:18072722237 succeed!
 
Wide character in print at /root/mojo/test.pl line 19, <LOG1> line 4.
$x is 验证
$d is 验证
1-------$str is 2016-04-22 11:02:01,259 INFO com.zjzc.thirdparty.sms.SMSUtils - Send message:您的813231，本30分钟内有效。 to phoneNo:18072722237 succeed!
 
此时$d和$x都正常显示
 
[root@wx03 mojo]# cat c1.pl
use Encode;
	my $x='验证';
        print "\$x is $x\n";
        my $d=encode_utf8('验证');
        print "\$d is $d\n";
[root@wx03 mojo]# perl c1.pl
$x is 验证
$d is 验证 
 
说明encode_utf8 必须用在utf8编码环境