使用Python开发，用的cython 获取媒体文件相关代码：  if content.get("msgtype") == "image": print(content) image_data = content["image"] sdkFileid = image_data["sdkfileid"] is_finish = 0 # index_buf = b"Range:bytes=0-100" index_buf = b"" while is_finish == 0: m_data = NewMediaData() tmp_ret = GetMediaData(sdk, index_buf, sdkFileid.encode(), b"", b"", 30, m_data) if tmp_ret != 0: print("GetMediaData 错误 %s" % tmp_ret) FreeMediaData(m_data) return data = GetData(m_data) is_finish = IsMediaDataFinish(m_data) index_buf = GetOutIndexBuf(m_data) data_len = GetDataLen(m_data) print("size %s, next_index_buf %s, is_finish %s" % (data_len, index_buf, is_finish)) FreeMediaData(m_data) 运行结果如下： {'msgid': '17255191468933074503_1639450740150_external', 'action': 'send', 'from': '隐藏隐藏', 'tolist': ['隐藏隐藏'], 'roomid': '', 'msgtime': 1639450739990, 'msgtype': 'image', 'image': {'md5sum': '869775cdcef8d4d0291b17fb04ff8889', 'filesize': 77368, 'sdkfileid': 'CiA4YzkxZWUwNGUyNmYwYTE2NGI3YWMxNjAzZmJlZTAwMRI4TkRkZk56ZzRNVE13TVRBd01Ua3hNVEF5TWw4eE1UZ3pNalV3TVRReVh6RTJNemswTlRBM05EQT0aIDZmZWQzNWMyZWI1MDFjOTY3ZmNmMmM0ZWY1ZDFjNzdm'}} size 77368, next_index_buf b'', is_finish 1 然后文件内容也只有小部分