如何在flask中提交多个文件组并存储到数据库中

from flask import Flask, render_template, request
from werkzeug.utils import secure_filename
from flask_sqlalchemy import SQLAlchemy

app = Flask(__name__)
app.config['SQLALCHEMY_DATABASE_URI'] = 'your_database_uri'
db = SQLAlchemy(app)

class File(db.Model):
    id = db.Column(db.Integer, primary_key=True)
    filename = db.Column(db.String(255))
    filepath = db.Column(db.String(255))
    upload_time = db.Column(db.DateTime)

@app.route('/', methods=['GET', 'POST'])
def upload_files():
    if request.method == 'POST':
        files = request.files.getlist('file')
        for file in files:
            filename = secure_filename(file.filename)
            file.save('your_upload_directory/' + filename)
            
            new_file = File(filename=filename, filepath='your_upload_directory/' + filename)
            db.session.add(new_file)
        db.session.commit()
        return 'Files uploaded successfully!'
    return render_template('upload.html')

if __name__ == '__main__':
    app.run()