### Python 实现 115 网盘的功能 要实现与 115 网盘交互的文件上传、下载以及目录读取功能，可以借助 `requests` 库来模拟 HTTP 请求并与网盘 API 进行通信。以下是具体实现方法： #### 准备工作 首先需要安装必要的库： ```bash pip install requests ``` #### 登录与认证 大多数云盘服务都需要先登录才能执行后续的操作。通常可以通过 POST 请求发送用户名和密码完成身份验证，并获取会话令牌。 ```python import requests def login(username, password): url = "https://api.115.com/login" data = { 'username': username, 'password': password } headers = {'User-Agent': 'Mozilla/5.0'} response = requests.post(url, data=data, headers=headers) if response.status_code == 200 and 'success' in response.json(): session_id = response.cookies.get('session_id') return session_id else: raise Exception("Login failed") ``` 此部分代码用于登录并返回会话 ID[^3]。 #### 目录读取 通过调用相应的接口，可以获取指定路径下的文件列表。 ```python def list_directory(session_id, folder_id='root'): url = f"https://web.api.115.com/files?folder_id={folder_id}" cookies = {'session_id': session_id} headers = {'User-Agent': 'Mozilla/5.0'} response = requests.get(url, cookies=cookies, headers=headers) if response.status_code == 200: files = response.json().get('files', []) for file_info in files: print(f"Name: {file_info['name']}, Size: {file_info['size']} bytes") else: print("Failed to retrieve directory listing.") ``` 该函数接受会话 ID 和目标文件夹 ID 参数，打印出对应的文件名称及其大小[^4]。 #### 文件上传 为了向云端上传新文件，需构建一个多部分表单提交请求。 ```python def upload_file(session_id, local_path, remote_folder_id='root'): url = "https://upload.api.115.com/upload" cookies = {'session_id': session_id} with open(local_path, 'rb') as file_data: files = {'file': (local_path.split('/')[-1], file_data)} params = {'folder_id': remote_folder_id} headers = {'User-Agent': 'Mozilla/5.0'} response = requests.post(url, files=files, params=params, cookies=cookies, headers=headers) if response.status_code == 200 and 'ok' in response.text.lower(): print("File uploaded successfully!") else: print("Upload failed:", response.content.decode()) ``` 这段脚本实现了从本地计算机传送数据至指定远端位置的能力[^5]。 #### 文件下载 最后一步涉及如何将存储于网络空间中的对象拉回到个人设备上来。 ```python def download_file(session_id, file_url, save_to='./downloaded_files/'): cookies = {'session_id': session_id} headers = {'User-Agent': 'Mozilla/5.0'} response = requests.get(file_url, stream=True, cookies=cookies, headers=headers) if not os.path.exists(save_to): os.makedirs(save_to) filename = re.findall("filename=(.+)", response.headers["Content-Disposition"])[0].strip('"') filepath = os.path.join(save_to, filename) chunk_size = 1024 * 1024 with open(filepath, 'wb') as fd: for chunk in response.iter_content(chunk_size=chunk_size): fd.write(chunk) print(f"{filename} has been downloaded at {save_to}") ``` 这里定义了一种方式用来抓取在线资源并将它们保存成实际存在的档案副本[^6]。 --- ###