src/Controller.php
protected function jsonpReturn(array $value, $callback = '')
    {
        if ($callback) {
            exit($callback . '(' . json_encode($value) . ')');
        } else {
            $this->ajaxReturn($value);
        }

    }
protected function jsonpReturn(array $value, $callback = '')
    {
        if ($callback) {
            exit($callback . '(' . json_encode($value) . ')');
        } else {
            $this->ajaxReturn($value);
        }

    }
jsonpReturn返回
@date   2017-08-07T10:41:59+0800
@author ChenMingjiang
@param  array                    $value    [description]
@param  string                   $callback [description]
@return [type]                             [description]