Python - Flask -停止页面重新提交post请求

from flask import Flask, redirect, request

app = Flask(__name__)

@app.route('/submit', methods=['POST'])
def submit():
    # 处理POST请求的逻辑
    # ...

    # 重定向到一个新的页面
    return redirect('/success')

@app.route('/success')
def success():
    return '提交成功！'

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

from flask import Flask, redirect, request, url_for, render_template

app = Flask(__name__)

@app.route('/submit', methods=['GET', 'POST'])
def submit():
    if request.method == 'POST':
        # 处理POST请求的逻辑
        # ...

        # 生成GET请求的URL，并重定向到该URL
        return redirect(url_for('success'))
    else:
        # 显示表单页面
        return render_template('form.html')

@app.route('/success')
def success():
    return '提交成功！'

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

from flask import Flask, redirect, request, session, render_template
import secrets

app = Flask(__name__)
app.secret_key = secrets.token_hex(16)

@app.route('/submit', methods=['GET', 'POST'])
def submit():
    if request.method == 'POST':
        if 'token' in session and session['token'] == request.form.get('token'):
            # 处理POST请求的逻辑
            # ...

            # 生成新的Token，并存储到session中
            session['token'] = secrets.token_hex(16)

            # 重定向到一个新的页面
            return redirect('/success')
        else:
            return '无效的Token！'
    else:
        # 生成新的Token，并存储到session中
        session['token'] = secrets.token_hex(16)

        # 显示表单页面
        return render_template('form.html')

@app.route('/success')
def success():
    return '提交成功！'

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