后端开发|Python教程
Python,Flask框架,上传,多个文件,方法
后端开发-Python教程
本文实例讲述了Python使用Flask框架同时上传多个文件的方法，分享给大家供大家参考。具体如下：
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下面的演示代码带有详细的html页面和python代码
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import os# Well render HTML templates and access data sent by POST# using the request object from flask. Redirect and url_for# will be used to redirect the user once the upload is done# and send_from_directory will help us to send/show on the# browser the file that the user just uploadedfrom flask import Flask, render_template, request, redirect, url_for, send_from_directoryfrom werkzeug import secure_filename# Initialize the Flask applicationapp = Flask(__name__)# This is the path to the upload directoryapp.config[UPLOAD_FOLDER] = uploads/# These are the extension that we are accepting to be uploadedapp.config[ALLOWED_EXTENSIONS] = set([ xt, pdf, png, jpg, jpeg, gif])# For a given file, return whether its an allowed type or notdef allowed_file(filename): return . in filename and \filename.rsplit(., 1)[1] in app.config[ALLOWED_EXTENSIONS]# This route will show a form to perform an AJAX request# jQuery is loaded to execute the request and update the# value of the operation@app.route(/)def index(): return render_template(index.html)# Route that will process the file upload@app.route(/upload, methods=[POST])def upload(): # Get the name of the uploaded files uploaded_files = request.files.getlist("file[]") filenames = [] for file in uploaded_files: # Check if the file is one of the allowed types/extensions if file and allowed_file(file.filename):# Make the filename safe, remove unsupported charsfilename = secure_filename(file.filename)# Move the file form the temporal folder to the upload# folder we setupfile.save(os.path.join(app.config[UPLOAD_FOLDER],filename))# Save the filename into a list, well use it laterfilenames.append(filename)# Redirect the user to the uploaded_file route, which# will basicaly show on the browser the uploaded file # Load an html page with a link to each uploaded file return render_template(upload.html, filenames=filenames) # This route is expecting a parameter containing the name# of a file. Then it will locate that file on the upload# directory and show it on the browser, so if the user uploads# an image, that image is going to be show after the upload@app.route(/uploads/)def uploaded_file(filename): return send_from_directory(app.config[UPLOAD_FOLDER],filename)if __name__ == \__main__: app.run( host="0.0.0.0", port=int("80"), debug=True )
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index.html代码
How To Upload a File.
upload.html页面：
Uploaded files
This is a list of the files you just uploaded, click on them to load/download them {% for file in filenames %}{{file}} {% endfor %}
Code to manage a Upload
@app.route(/upload, methods=[POST])def upload(): # Get the name of the uploaded file #file = request.files[file] uploaded_files = request.files.getlist("file[]") filenames = [] for file in uploaded_files: # Check if the file is one of the allowed types/extensions if file and allowed_file(file.filename):# Make the filename safe, remove unsupported charsfilename = secure_filename(file.filename)# Move the file form the temporal folder to the upload# folder we setupfile.save(os.path.join(app.config[UPLOAD_FOLDER], filename))filenames.append(filename)# Redirect the user to the uploaded_file route, which# will basicaly show on the browser the uploaded file # Load an html page with a link to each uploaded file return render_template(upload.html, filenames=filenames)
