如何通过url将一些值从flask应用发送到dash应用？flask和dash应用程序独立运行

from flask import Flask, redirect, url_for
app = Flask(__name__)

@app.route('/send_data/<value>')
def send_data(value):
    # 将value传递给Dash应用
    return redirect(url_for('dash_route', value=value))

import dash
import dash_core_components as dcc
import dash_html_components as html

app = dash.Dash(__name__)

@app.callback(
    dash.dependencies.Output('output-div', 'children'),
    [dash.dependencies.Input('url', 'search')]
)
def update_output(search):
    # 处理从Flask应用传递过来的参数
    value = search.split('=')[1]
    return f'接收到的值为: {value}'

app.layout = html.Div([
    dcc.Location(id='url', refresh=False),
    html.Div(id='output-div')
])

if __name__ == '__main__':
    app.run_server(debug=True)

if __name__ == '__main__':
    app.run(debug=True)  # Flask应用
    app.run_server(debug=True)  # Dash应用