Flask 文件上传不保存文件
[英]Flask file upload is not saving the file
问题描述
I've been following a tutorial for a Flask file upload script, which is as follows:
我一直在关注一个Flask文件上传脚本的教程，内容如下：
app.py :应用程序.py ：
from flask import Flask, url_for, render_template, request, flash, redirect
from werkzeug.utils import secure_filename
from datetime import datetime
import json
import subprocess
import os
import sys
UPLOAD_FOLDER = '/tmp/'
ALLOWED_EXTENSIONS = set(['txt'])
app = Flask('author_script')
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
app.debug = True
def allowed_file(filename):
return '.' in filename and \
filename.rsplit('.', 1)[1] in ALLOWED_EXTENSIONS
@app.route("/", methods=['GET', 'POST'])
def upload():
if request.method == 'POST':
if 'file' not in request.files:
flash("No file part")
return redirect(request.url)
file = request.files['file']
if file.filename == '':
flash('No selected file')
return redirect(request.url)
if file and allowed_file(file.filename):
filename = secure_filename(file.filename)
file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
flash('File uploaded!', 'success')
proc = subprocess.Popen('python author_script.py {}{} -p n -s n -m num'.format(UPLOAD_FOLDER, file.filename), shell=True, stdout=subprocess.PIPE)
return redirect(url_for('results'))
return render_template('upload.html')
# This could redirect the user to the stepfunctions page for their AWS account so they can monitor
# the pipeline progress.
@app.route('/results')
def results():
return render_template('results.html').
upload.html:上传.html：
<!doctype html>
<title>Upload Authors List</title>
<h1>Upload Authors List</h1>
<form action="" method=post enctype=multipart/form-data>
<p><input type=file name=file>
<input type=submit value=Upload>
</form>
When I upload a proper .txt file and click "Upload", it works, but then when I check the destination folder, the .txt file hasn't been saved there.当我上传正确的 .txt 文件并单击“上传”时，它可以工作，但是当我检查目标文件夹时，.txt 文件尚未保存在那里。 Any ideas as to what's going wrong?关于出了什么问题的任何想法？
2 个解决方案
解决方案1
5 已采纳 2018-08-07 19:25:14
How do you believe that your code works?Can you get a successful message?你怎么相信你的代码有效？你能得到一条成功的消息吗？ I just run your code and do some modification and succeed.我只是运行您的代码并进行一些修改并成功。
Maybe you don't know for sure that where your tmp folder is?也许您不确定您的 tmp 文件夹在哪里？ How about set UPLOAD_FOLDER = "."设置UPLOAD_FOLDER = "."怎么样？ So you can check the file in your .py file 's directory.因此，您可以检查.py文件目录中的文件。
Here is my dest folder with two uploaded files:这是我的 dest 文件夹，其中包含两个上传的文件：
Here is my python file(E:\\python_project\\test):这是我的 python 文件（E:\\python_project\\test）：
from flask import Flask, url_for, render_template, request, flash, redirect
from werkzeug.utils import secure_filename
from datetime import datetime
import json
import subprocess
import os
import sys
UPLOAD_FOLDER = '/tmp/'
ALLOWED_EXTENSIONS = set(['txt','jpg'])
app = Flask('author_script')
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
app.debug = True
def allowed_file(filename):
return '.' in filename and \
filename.rsplit('.', 1)[1] in ALLOWED_EXTENSIONS
@app.route("/", methods=['GET', 'POST'])
def upload():
if request.method == 'POST':
if 'file' not in request.files:
flash("No file part")
return redirect(request.url)
file = request.files['file']
if file.filename == '':
flash('No selected file')
return redirect(request.url)
if file and allowed_file(file.filename):
filename = secure_filename(file.filename)
file.save(os.path.join(app.config['UPLOAD_FOLDER'], filename))
# flash('File uploaded!', 'success')
proc = subprocess.Popen('python author_script.py {}{} -p n -s n -m num'.format(UPLOAD_FOLDER, file.filename), shell=True, stdout=subprocess.PIPE)
return render_template('upload.html')
# This could redirect the user to the stepfunctions page for their AWS account so they can monitor
# the pipeline progress.
@app.route('/results')
def results():
return render_template('results.html')
app.run("localhost","8080")
解决方案2
1 2020-12-05 06:40:07
Just make sure to add the "."只需确保添加“。” before the path if saving in the current directory.如果保存在当前目录中，则在路径之前。
UPLOAD_FOLDER = './tmp/'
And this shall work!这将起作用！
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