head file error, when server return '' content

[dawn110110]

ut 里：

requests/models.py 901 行，里我加了些输出：

从第一个截图可以看出，head 请求返回的是 空串 ，然后当 json 解析报错了？

Traceback (most recent call last):
........
  File "/opt/python_root/ins/lib/python3.9/site-packages/ufile/filemanager.py", line 421, in head_file
    return _head_file(url, header)
  File "/opt/python_root/ins/lib/python3.9/site-packages/ufile/httprequest.py", line 118, in _head_file
    return __return_wraper(response)
  File "/opt/python_root/ins/lib/python3.9/site-packages/ufile/httprequest.py", line 20, in __return_wraper
    ret = {} if content_consumed else response.json() if isinstance(content_type, str) and content_type.startswith('application/json') else {}
  File "/opt/python_root/ins/lib/python3.9/site-packages/requests/models.py", line 903, in json
    return complexjson.loads(self.text, **kwargs)
  File "/opt/python_root/ins/lib/python3.9/json/__init__.py", line 346, in loads
    return _default_decoder.decode(s)
  File "/opt/python_root/ins/lib/python3.9/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/opt/python_root/ins/lib/python3.9/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

测试代码截图：

self.s3 是我简单封装过的 ufile sdk.

文件我是实际传上去了的.