Mojo 返回一维和二维数组

这种情况不断的网数组@arr2里放入数据,返回的内容为:
 
这种情况是一维数组:
 
while( $selStmt->fetch() ){
print "\$a1 is $a1\n";
print "\$a2 is $a2\n";
print "\$a3 is $a3\n";
push (@arr2, "$a1  $a2  $a3" );
  };
 
  $c->render(json =>  \@arr2);
};
 
http://192.168.32.101:3000/api/auto_publish/publish_info?env=uat 返回结果:
 
["121.40.189.90  uat-frontend  uat","121.40.100.198  zjzc-hy-pre-01  uat","121.40.100.198  zjzc-hy-core-01  uat"]
 
另外一种情况,返回二维数组:
 
foreach (@arr){
##2015-11-04 15:51:54,134 DEBUG com.zjzc.thirdparty.sms.SMSSendThread 
 
##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 ($_ =~  /([0-9]{4}-[0-9]{1,2}-[0-9]{2}\s+[0-9]{2}:[0-9]{2}:[0-9]{2}.*?)\s+(.*?Send message:)\s*(.*?)(to\s+phoneNo:\s*[0-9]{11}).*/){
 
	$a1=$1;
	$a2=$2;
	$a3=$3;
	$a4=$4;
 
	##微信是UTF-8字符集
 
	my 	$endtime=strftime("%Y%m%d%H%M%S",localtime());
 
	my $d=encode_utf8('验证');
	if ($a3 =~/$d/){
	#$msg->reply("\@$friend $a1-$a3-$a4");
	$a3=decode_utf8("$a3");
	##encode("utf8",decode("gbk","格式为:中均/温金 客户手机号"))
	 #@content=($a1,$a3,$a4);
	 my @content=("$a1","$a3","$a4");
	 my $href= \@content;
	 push (@arr_out ,$href);
                  }
				                              };
           };