如何解决Flask:使用 GET 请求下载 .zip 文件
烧瓶 v1.1.2,Python v3.7
我正在尝试让 Flask 向我发送它根据 GET 请求生成的 .zip 文件。
我有一个页面,用户可以在其中单击下载按钮,该按钮发出 GET 请求并将键解析为值。基于此密钥创建 .zip 文件并将其移动到我的 /static
文件夹中。在执行的处理程序下方:
def download(self):
key = request.args['action']
zip_location = os.path.join(app.static_folder,"files.zip")
res = self.recorder.down.download(key,zip_location)
return send_file("static/files.zip",as_attachment=True)
我尝试使用 send_file
、send_from_directory
、app.send_static_file
发送文件,但它们都导致出现相同的奇怪错误:
Serving Flask app "webapp.webUI" (lazy loading)
Environment: production
WARNING: This is a development server. Do not use it in a production deployment.
Use a production Wsgi server instead.
Debug mode: on
Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
Debugging middleware caught exception in streamed response at a point where response headers were already sent.
Traceback (most recent call last):
File "/home/pi/somepath/env/lib/python3.7/site-packages/werkzeug/wsgi.py",line 506,in __next__
return self._next()
File "/home/pi/somepath/env/lib/python3.7/site-packages/werkzeug/wrappers/base_response.py",line 45,in _iter_encoded
for item in iterable:
TypeError: 'Response' object is not iterable
127.0.0.1 - - [18/Feb/2021 13:34:58] "GET /download?action=20210216+16u11s19 HTTP/1.1" 200 -
Google 帮不上什么忙,我已经搜索了错误的原因好几个小时了。
解决方法
试试
from flask import Flask,request
# set the project root directory as the static folder,you can set others.
app = Flask(__name__,static_url_path='')
@app.route('/download')
def download():
return app.send_static_file('files.zip')
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