前台页面代码：
$(document).ready(function(){
$.ajax({
url:'http://192.168.31.158/gongan_public/index.php',
type:'GET',
data:{},
dataType:'json',
success:function(data,status,xhr){
alert(status);
},
error:function(xhr,status,errMessage){
alert(status);
}
});
});

后台是代码:http://192.168.31.158/gongan_public/index.php
class IndexAction extends Action {
public function index(){
header("Content-Type:text/html; charset=utf-8");
$aa="aaaaaaaaa";
$arr[]=array(
'n_id'=>$aa
);
$this->ajaxReturn($arr,'json');
}
}
http://192.168.31.158/gongan_public/index.php结果：
{"status":1,"info":"json","data":[{"n_id":"aaaaaaaaa"}]}

显示data取到值了，为什么前台总提示error