如何使用 python flask web 服务从服务器发送文件以及如何从客户端获取这些文件？

Question

I need to send files from a server using flask web service in python and clients should be to download those files whenever they want by calling that service.

I am trying the below code to send files.

from flask import Flask, send_from_directory
import os


app = Flask(__name__)

@app.route('/', methods=['POST'])
def index():
 response = send_from_directory(directory=os.getcwd(), filename='utils.py')
 response.headers['my-custom-header'] = 'my-custom-status-0'
 return response

if __name__ == '__main__':
  check, file_object = app.run("0.0.0.0", port=5000, threaded=True)

Answer 1

To download file from Flask server you can do the following

from flask import send_from_directory
import os

@app.route("/getfile", methods=["GET"])
def getfile():
    # WORKDIR = "" if localhost, otherwise you server root path
    try:
        return send_from_directory(
            WORKDIR + os.path.join(os.getcwd(), "upload_folder_name"), "your_filename", as_attachment=True)
    except Exception as ex:
        logging.warning("Wasn't able to provide get file: {}".format(ex))
        return redirect("401.html", 301)