代码之家 › 专栏 › 技术社区 › claudiadast

烧瓶文件上载未保存文件

file-upload flask python

claudiadast · 技术社区 · 7 年前

我一直在学习Flask文件上传脚本的教程,如下所示:

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').

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>

当我上传一个正确的.txt文件并点击“上传”时,它可以工作,但是当我检查目标文件夹时,.txt文件还没有保存在那里。有什么问题吗?

1 回复 | 直到 7 年前

Saige Zhang 7 年前

你怎么相信你的代码是有效的?你能收到一个成功的消息吗?我只是运行你的代码,做一些修改并成功。

也许你不知道你的tmp文件夹在哪里?布景怎么样 UPLOAD_FOLDER = "." 所以你可以在 .py 文件的目录。

这是我的dest文件夹,其中有两个上载的文件:

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")