app.py

from flask import Flask, render_template, request

app = Flask(__name__)

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

@app.route('/submit', methods=['POST'])
def submit():
    text = request.form['user_input']
    return f"你输入了：{text}"

if __name__ == '__main__':
    app.run(host="0.0.0.0", port=7860)