C++在物联网中的云连接和数据集成

#include <iostream>
#include <sstream>
#include "cloud_client.h"

int main() {
  // 创建 CloudClient 对象
  CloudClient client("your-project-id", "your-private-key");

  // 连接到 MQTT 代理
  client.connect("mqtt.googleapis.com", 8883);

  // 发布消息到主题
  std::string message = "Hello, IoT!";
  client.publish("my/test/topic", message);

  // 等待消息发布完成
  client.waitForCompletion();

  return 0;
}

#include <iostream>
#include <fstream>
#include <boost/algorithm/string.hpp>

struct Reading {
  std::string sensor_id;
  float temperature;
};

std::vector<Reading> readDataFromFile(std::string filename) {
  std::vector<Reading> readings;
  std::ifstream file(filename);
  std::string line;

  while (std::getline(file, line)) {
    std::vector<std::string> tokens;
    boost::split(tokens, line, boost::is_any_of(","));
    if (tokens.size() == 2) {
      Reading reading;
      reading.sensor_id = tokens[0];
      reading.temperature = std::stof(tokens[1]);
      readings.push_back(reading);
    }
  }

  return readings;
}

void saveDataToFile(std::vector<Reading> readings, std::string filename) {
  std::ofstream file(filename);

  for (auto& reading : readings) {
    file << reading.sensor_id << "," << reading.temperature << "\n";
  }
}

int main() {
  std::vector<Reading> readings = readDataFromFile("data.csv");

  // 将数据转换为 JSON 格式
  std::stringstream json_stream;
  json_stream << "{";
  for (auto& reading : readings) {
    json_stream << "\"" << reading.sensor_id << "\":" << reading.temperature << ",";
  }
  json_stream.seekg(-1, std::ios_base::end);  // 删除最后一个逗号
  json_stream << "}";

  // 将 JSON 数据保存到文件中
  saveDataToFile(json_stream.str(), "data.json");

  return 0;
}