使用 Flask 上传图像文件时出错

Question

Error while uploading files to my selected folder it raises the following error.将文件上传到我选择的文件夹时出错，它会引发以下错误。

As I am new to flask I am unable to catch the error.由于我是 flask 的新手，因此我无法发现错误。

Not Found未找到

The requested URL was not found on the server.在服务器上找不到请求的 URL。 If you entered the URL manually please check your spelling and try again.如果您手动输入了 URL，请检查您的拼写并重试。

app.py应用程序.py

import os
#import magic
import urllib.request
#from app import app
from flask import Flask, flash, request, redirect, render_template
from werkzeug.utils import secure_filename
app = Flask(__name__)

#app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
UPLOAD_FOLDER = '/static'
ALLOWED_EXTENSIONS = set(['txt', 'pdf', 'png', 'jpg', 'jpeg', 'gif'])
def allowed_file(filename):
    return '.' in filename and filename.rsplit('.', 1)[1].lower() in ALLOWED_EXTENSIONS

@app.route('/')
def upload_form():
    return render_template('upload.html')

@app.route('/', methods=['POST'])
def upload_file():
    if request.method == 'POST':
        # check if the post request has the files part
        if 'files[]' not in request.files:
            flash('No file part')
            return redirect(request.url)
        files = request.files.getlist('files[]')
        for file in files:
            if file and allowed_file(file.filename):
                filename = secure_filename(file.filename)
                file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
        flash('File(s) successfully uploaded')
        return redirect('/')

if __name__ == "__main__":
    app.run(debug = True)

upload.html上传.html

<!doctype html>
<title>Python Flask Multiple Files Upload Example</title>
<h2>Select file(s) to upload</h2>
<p>
    {% with messages = get_flashed_messages() %}
      {% if messages %}
        <ul class=flashes>
        {% for message in messages %}
          <li>{{ message }}</li>
        {% endfor %}
        </ul>
      {% endif %}
    {% endwith %}
</p>
<form method="post" action="/" enctype="multipart/form-data">
    <dl>
        <p>
            <input type="file" name="files[]" multiple="true" autocomplete="off" required>
        </p>
    </dl>
    <p>
        <input type="submit" value="Submit">
    </p>
</form>

Answer 1

You should change your code你应该改变你的代码

    @app.route('/', methods=['POST', 'GET'])
def upload_file():
    if request.method == 'POST':
        # check if the post request has the files part
        if 'files[]' not in request.files:
            flash('No file part')
            return redirect(request.url)
        files = request.files.getlist('files[]')
        for file in files:
            if file and allowed_file(file.filename):
                filename = secure_filename(file.filename)
                file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
        flash('File(s) successfully uploaded')
        return redirect('/')
    elif request.method == 'GET':
        return render_template('upload.html')

使用 Flask 上传图像文件时出错

问题描述

1 个解决方案

解决方案1
1 已采纳 2020-06-01 05:51:42

使用 Flask 上传图像文件时出错

问题描述

1 个解决方案

解决方案1 1 已采纳 2020-06-01 05:51:42

解决方案1
1 已采纳 2020-06-01 05:51:42