我尝试编写一个简单的Flask程序,创建一个网页来接收上传的文件,并使用该文件的数据在我的网页上显示筛选后的部分内容,但我似乎无法理解如何实现。
这是我用于上传文件的代码,它可以正常工作。
这是我用于上传文件的代码,它可以正常工作。
import os
from flask import Flask, request, redirect, url_for
from werkzeug.utils import secure_filename
UPLOAD_FOLDER = 'C:/Users/ohadt/PycharmProjects/logFiles'
ALLOWED_EXTENSIONS = set(['txt', 'pdf', 'png', 'jpg', 'jpeg', 'gif', 'log'])
app = Flask(__name__)
app.config['UPLOAD_FOLDER'] = UPLOAD_FOLDER
def allowed_file(filename):
return '.' in filename and \
filename.rsplit('.', 1)[1] in ALLOWED_EXTENSIONS
@app.route('/', methods=['GET', 'POST'])
def upload_file():
if request.method == 'POST':
# check if the post request has the file part
if 'file' not in request.files:
flash('No file part')
return redirect(request.url)
file = request.files['file']
# if user does not select file, browser also
# submit a empty part without filename
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))
return redirect(url_for('read_uploaded_file',
filename=filename))
return '''
<!doctype html>
<title>Upload new File</title>
<h1>Upload new File</h1>
<form action="" method=post enctype=multipart/form-data>
<p><input type=file name=file>
<input type=submit value=Upload>
</form>
'''
接下来,我尝试写一个打开文件并读取数据的方法,但是我无法弄清楚如何做到这一点。请问您能帮助我理解如何读取文件内容并在我的网站上呈现过滤版本吗? 谢谢!