$this->uploads($picurl);

public function uploads($picurl)

    {

        $config = array(

            'maxSize' => 3145728,

            'exts' => array('jpg','png','gif','jpeg'),

            'rootPath' => './Public/',

            'savePath' => 'Admin/img/',

            'saveName' => '',

            'autoSub' => true,

            'subName' => array('date','Ymd'),

        );

        $uploads = new \Think\Upload($config);

        $result = $uploads->uploadOne($picurl);    //$result->$uploads->upload();

        if(!$result)

        {

            $info = $uploads->getError();

        }

        else

        {

            $info = __ROOT__.'/Public/'.$result['savepath'].$result['savename'];

        }

        return $info;

    }

//调用upload上传文件有单文件上传跟多文件上传两种，但是将其封装成一个类传参数调用的时候，uploadOne($picurl)方法必须写传进来的参数，而upload()方法不能写传进来的参数，会显示非法上传文件！！！

//返回信息使用uploadOne()方法不需要遍历,使用upload()方法必须遍历