145 lines
5.4 KiB
Markdown
145 lines
5.4 KiB
Markdown
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# 使用 Python 连接到 Dropbox
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> 原文：<https://www.blog.pythonlibrary.org/2013/07/17/connecting-to-dropbox-with-python/>
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昨天偶然发现了 Dropbox 的 [Python API](https://www.dropbox.com/developers/core/start/python) 。我最终使用他们的教程设计了一个简单的类来访问我的 Dropbox。你需要下载他们的 dropbox 模块，或者使用“pip install dropbox”来安装。您还需要注册一个密钥和密码。一旦有了这些，您就需要命名您的应用程序并选择您的访问级别。那你应该可以走了！
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现在我们准备开始写一些代码。这是我想到的:
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```py
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import dropbox
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import os
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import sys
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import webbrowser
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from configobj import ConfigObj
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########################################################################
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class DropObj(object):
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"""
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Dropbox object that can access your dropbox folder,
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as well as download and upload files to dropbox
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"""
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#----------------------------------------------------------------------
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def __init__(self, filename=None, path='/'):
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"""Constructor"""
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self.base_path = os.path.dirname(os.path.abspath(__file__))
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self.filename = filename
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self.path = path
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self.client = None
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config_path = os.path.join(self.base_path, "config.ini")
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if os.path.exists(config_path):
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try:
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cfg = ConfigObj(config_path)
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except IOError:
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print "ERROR opening config file!"
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sys.exit(1)
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self.cfg_dict = cfg.dict()
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else:
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print "ERROR: config.ini not found! Exiting!"
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sys.exit(1)
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self.connect()
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#----------------------------------------------------------------------
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def connect(self):
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"""
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Connect and authenticate with dropbox
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"""
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app_key = self.cfg_dict["key"]
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app_secret = self.cfg_dict["secret"]
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access_type = "dropbox"
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session = dropbox.session.DropboxSession(app_key,
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app_secret,
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access_type)
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request_token = session.obtain_request_token()
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url = session.build_authorize_url(request_token)
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msg = "Opening %s. Please make sure this application is allowed before continuing."
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print msg % url
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webbrowser.open(url)
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raw_input("Press enter to continue")
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access_token = session.obtain_access_token(request_token)
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self.client = dropbox.client.DropboxClient(session)
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#----------------------------------------------------------------------
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def download_file(self, filename=None, outDir=None):
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"""
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Download either the file passed to the class or the file passed
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to the method
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"""
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if filename:
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fname = filename
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f, metadata = self.client.get_file_and_metadata("/" + fname)
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else:
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fname = self.filename
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f, metadata = self.client.get_file_and_metadata("/" + fname)
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if outDir:
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dst = os.path.join(outDir, fname)
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else:
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dst = fname
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with open(fname, "w") as fh:
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fh.write(f.read())
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return dst, metadata
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#----------------------------------------------------------------------
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def get_account_info(self):
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"""
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Returns the account information, such as user's display name,
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quota, email address, etc
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"""
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return self.client.account_info()
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#----------------------------------------------------------------------
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def list_folder(self, folder=None):
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"""
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Return a dictionary of information about a folder
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"""
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if folder:
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folder_metadata = self.client.metadata(folder)
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else:
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folder_metadata = self.client.metadata("/")
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return folder_metadata
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#----------------------------------------------------------------------
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def upload_file(self):
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"""
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Upload a file to dropbox, returns file info dict
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"""
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try:
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with open(self.filename) as fh:
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path = os.path.join(self.path, self.filename)
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res = self.client.put_file(path, fh)
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print "uploaded: ", res
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except Exception, e:
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print "ERROR: ", e
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return res
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if __name__ == "__main__":
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drop = DropObj("somefile.txt")
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```
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我把我的密钥和秘密放在一个配置文件中，如下所示:
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```py
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key = someKey
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secret = secret
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```
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然后我使用 configobj 将这些信息提取到一个 Python 字典中。我试图找到一种方法来缓存请求令牌，但我总是得到一个关于我的令牌过期的错误，所以这个脚本总是会弹出一个浏览器窗口，要求您“允许”您的应用程序访问您的 Dropbox。一旦你连接上了，客户端就被实例化了，你可以提取关于你的 Dropbox 的各种信息。例如，你可以在你的 Dropbox 中获得你的账户信息或者任何文件夹的元数据。我还创建了和 **upload_file** 方法来允许轻松上传文件。我可能应该这样做，这样你也可以传递一个文件给这个方法，但是那要等到版本 2。 **download_file** 方法遵循 Dropbox 支持的官方方法，然而我下载的每个文件最终都被破坏了。
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无论如何，我认为这是一个有趣的 API，希望你会发现这个小脚本也很有帮助。
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