如何在flutter中实现firebase_messaging与mysql的链接

dependencies:
  firebase_messaging: ^10.0.4
  http: ^0.13.4

dependencies {
    // ...
    implementation 'com.google.firebase:firebase-messaging:22.0.0'
}

<service
    android:name="com.example.your_flutter_app.FirebaseMessagingService"
    android:exported="false">
    <intent-filter>
        <action android:name="com.google.firebase.MESSAGING_EVENT" />
    </intent-filter>
</service>

import 'package:firebase_messaging/firebase_messaging.dart';

class FirebaseMessagingService {
  final FirebaseMessaging _firebaseMessaging = FirebaseMessaging.instance;

  void initialize() {
    _firebaseMessaging.requestPermission();
    _firebaseMessaging.getToken().then((token) {
      print('Firebase Messaging Token: $token');
      // 在此处将令牌发送到您的后端服务器以进行MySQL数据库连接
    });

    FirebaseMessaging.onMessage.listen((RemoteMessage message) {
      print('Received message: ${message.notification!.title}');
      // 在此处处理从消息中收到的数据
    });
  }
}

import 'package:flutter/material.dart';
import 'FirebaseMessagingService.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  final FirebaseMessagingService _firebaseMessagingService =
      FirebaseMessagingService();

  @override
  void initState() {
    super.initState();
    _firebaseMessagingService.initialize();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Firebase Messaging',
      home: Scaffold(
        appBar: AppBar(
          title: Text('Flutter Firebase Messaging'),
        ),
        body: Center(
          child: Text('Hello World'),
        ),
      ),
    );
  }
}

<?php
$servername = "localhost";
$username = "your_username";
$password = "your_password";
$dbname = "your_database_name";

// 创建连接
$conn = new mysqli($servername, $username, $password, $dbname);

// 检查连接是否成功
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// 接收从Firebase Messaging发送的数据
$data = json_decode(file_get_contents('php://input'), true);

// 将数据存储到MySQL数据库
$sql = "INSERT INTO messages (title, body) VALUES ('".$data['notification']['title']."', '".$data['notification']['body']."')";

if ($conn->query($sql) === TRUE) {
    echo "New record created successfully";
} else {
    echo "Error: " . $sql . "<br>" . $conn->error;
}

$conn->close();
?>