如何在foreach (map)中等待服务响应？

const services = new Map([
  ['service1', 'http://service1.com'],
  ['service2', 'http://service2.com'],
  ['service3', 'http://service3.com']
]);

async function requestService(url) {
  // 发送请求并等待响应
  return new Promise((resolve, reject) => {
    // 发送请求
    // ...

    // 等待响应
    setTimeout(() => {
      // 模拟响应数据
      const response = 'Response from ' + url;
      resolve(response);
    }, 2000); // 假设等待2秒钟
  });
}

async function processServices() {
  for (const [serviceName, serviceUrl] of services) {
    try {
      const response = await requestService(serviceUrl);
      console.log('Received response from ' + serviceName + ': ' + response);
    } catch (error) {
      console.error('Error occurred while requesting ' + serviceName + ': ' + error);
    }
  }
}

processServices();