圆月山庄资源网

Python使用Flask框架同时上传多个文件的方法
脚本专栏 2024/11/8 佚名
3 2
圆月山庄资源网 Design By www.vgjia.com

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：

下面的演示代码带有详细的html页面和python代码

import os
# We'll 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 uploaded
from flask import Flask, render_template, request, redirect, url_for, send_from_directory
from werkzeug import secure_filename
# Initialize the Flask application
app = Flask(__name__)
# This is the path to the upload directory
app.config['UPLOAD_FOLDER'] = 'uploads/'
# These are the extension that we are accepting to be uploaded
app.config['ALLOWED_EXTENSIONS'] = set(['txt', 'pdf', 'png', 'jpg', 'jpeg', 'gif'])
# For a given file, return whether it's an allowed type or not
def 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 chars
      filename = secure_filename(file.filename)
      # Move the file form the temporal folder to the upload
      # folder we setup
      file.save(os.path.join(app.config['UPLOAD_FOLDER'],filename))
      # Save the filename into a list, we'll use it later
      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)
 
# 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/<filename>')
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
  )

index.html代码

<!DOCTYPE html>
<html lang="en">
 <head>
  <link href="bootstrap/3.0.0/css/bootstrap.min.css"
  rel="stylesheet">
 </head>
 <body>
  <div class="container">
   <div class="header">
    <h3 class="text-muted">How To Upload a File.</h3>
   </div>
   <hr/>
   <div>
   <form action="upload" method="post" enctype="multipart/form-data">
   <input type="file" multiple="" name="file[]" class="span3" /><br/>
    <input type="submit" value="Upload" class="span2">
   </form>
   </div>
  </div>
 </body>
</html>

upload.html页面：

<!DOCTYPE html>
<html lang="en">
 <head>
  <link href="bootstrap/3.0.0/css/bootstrap.min.css"
     rel="stylesheet">
 </head>
 <body>
  <div class="container">
   <div class="header">
    <h3 class="text-muted">Uploaded files</h3>
   </div>
   <hr/>
   <div>
   This is a list of the files you just uploaded, click on them to load/download them
   <ul>
    {% for file in filenames %}
     <li><a href="{{url_for('uploaded_file', filename=file)}}">{{file}}</a></li>
    {% endfor %}
   </ul>
   </div>
   <div class="header">
    <h3 class="text-muted">Code to manage a Upload</h3>
   </div>
   <hr/>  
<pre>
@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 chars
      filename = secure_filename(file.filename)
      # Move the file form the temporal folder to the upload
      # folder we setup
      file.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)
</pre>
   </div>
  </div>
 </body>
</html>

希望本文所述对大家的Python程序设计有所帮助。

标签：
Python,Flask框架,上传,多个文件,方法
圆月山庄资源网 Design By www.vgjia.com
广告合作：本站广告合作请联系QQ：858582 申请时备注：广告合作（否则不回）
免责声明：本站文章均来自网站采集或用户投稿，网站不提供任何软件下载或自行开发的软件！ 如有用户或公司发现本站内容信息存在侵权行为，请邮件告知！ 858582#qq.com
圆月山庄资源网 Design By www.vgjia.com
www.vgjia.com 圆月山庄资源网
139,976互联网资源
144,792高清电影
21,817无损音乐
631,128技术资源

更新日志

友情链接

杰晶网络 DDR爱好者之家 桃源资源网 杰网资源 富贵资源网 南强小屋 铁雪资源网 幽灵资源网 万梅资源网 狼山资源网 白云岛资源网 昆仑资源网 相思资源网 明霞山资源网 内蒙古资源网 黑松山资源网 茶园资源网 饿虎岗资源网 大旗谷资源网 常春岛资源网 岱庙资源网 兴国资源网 快活林资源网 蝙蝠岛资源网 帝王谷资源网 白云城资源网 伏龙阁资源网 清风细雨楼 天枫庄资源网 圆月山庄资源网 无争山庄资源网 神水资源网 移花宫资源网 神剑山庄资源网 无为清净楼资源网 金钱帮资源网 丐帮资源网 华山资源网 极乐门资源网 小李飞刀资源网 凤求凰客栈 风云阁资源网 金狮镖局 鸳鸯亭资源网 千金楼资源网 更多链接