Flutter，如何用getx刷新我的控制器和请求

dependencies:
  flutter:
    sdk: flutter
  get: ^4.1.4

import 'package:get/get.dart';

class MyController extends GetxController {
  // 在这里定义你的控制器逻辑和状态
}

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

class MyPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('My Page'),
      ),
      body: Center(
        child: GetBuilder<MyController>(
          builder: (controller) {
            return Text('Count: ${controller.count}');
          },
        ),
      ),
    );
  }
}

import 'package:get/get.dart';

class MyController extends GetxController {
  final httpClient = GetConnect();

  Future<void> fetchData() async {
    final response = await httpClient.get('https://api.example.com/data');
    // 处理响应数据
  }
}

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

class MyPage extends StatelessWidget {
  final MyController controller = Get.put(MyController());

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('My Page'),
      ),
      body: Center(
        child: GetBuilder<MyController>(
          builder: (controller) {
            return Text('Count: ${controller.count}');
          },
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          controller.fetchData();
        },
        child: Icon(Icons.refresh),
      ),
    );
  }
}