获取不到二进制流文件 [ 2.0 版本 ]

我用的是七牛的php-sdk，我把它上传的路径改成我本地的了。

本地能看见发请求过来了，就是看不到请求数据。

这段代码是curl options数据

    [10018] => QiniuPHP/7.0.8 (Windows NT/i586) PHP/7.0.8
    [19913] => 1
    [64] => 
    [81] => 
    [42] => 1
    [44] => 
    [10036] => POST
    [10002] => http://localhost/advance/frontend/web/index.php?r=niu/create
    [52] => 1
    [10023] => Array
        (
            [0] => Content-Type: multipart/form-data; boundary=9e615bf64043cbbc4c5c54235b8ea8a1
        )

    [10015] => --9e615bf64043cbbc4c5c54235b8ea8a1
Content-Disposition: form-data; name="token"

mrl0ICKJKGohJDNAA_8AfLJcV6sV79SpHm_4v5ZM:xuW8Vry62T0__nxGAaNqOHqApkI=:eyJzY29wZSI6InlvdW1lbmciLCJkZWFkbGluZSI6MTQ3MDAxNzA3NX0=
--9e615bf64043cbbc4c5c54235b8ea8a1
Content-Disposition: form-data; name="file"; filename="filename"
Content-Type: application/octet-stream

���� JFIF      �� C 
...		

我接受到的数据只有token

Array
(
    [token] => mrl0ICKJKGohJDNAA_8AfLJcV6sV79SpHm_4v5ZM:xuW8Vry62T0__nxGAaNqOHqApkI=:eyJzY29wZSI6InlvdW1lbmciLCJkZWFkbGluZSI6MTQ3MDAxNzA3NX0=
)

NiuController.php

    public function beforeAction($action)
    {
        $this->enableCsrfValidation = false;
        return parent::beforeAction($action);
    }