免费好用的天气服务 - Tuya（结尾附视频）（上）

// 根据所在地点设置数据中心地址
// 国内使用替换为 -> https://openapi.tuyacn.com
var host = "https://openapi-ueaz.tuyaus.com";
// clientId 和 secret 进入到项目详情页获取，请自行替换
var clientId = "替换为自己的clientId";
var secret = "替换为自己的secret";
// 接口请求类型
var httpMethod = "GET";
// sign加密方式
var sign_method = "HMAC-SHA256";
// 设置ajax为同步（根据需要）
$.ajaxSetup({
  async: false
});
// 将参数键值对解析为json对象
function toJsonObj(params, arr, map) {
  var datas = params.split('&');
  var obj = {};
  for (var item of datas) {
    var data = item.split("=");
    arr.push(data[0]);
    map[data[0]] = data[1];
  }
}
// 获取sign字符串，为最简形式，可根据需要修改
function stringToSign(query, path, method, secret) {
  var sha256 = "";
  var url = "";
  var headersStr = "";
  var map = {};
  var arr = [];
  var bodyStr = "";
  if (query) {
    toJsonObj(query, arr, map);
  }
  sha256 = CryptoJS.SHA256(bodyStr);
  arr = arr.sort();
  arr.forEach(function(item) {
    url += item + "=" + map[item] + "&";
  })
  if (url.length > 0) {
    url = url.substring(0, url.length - 1);
    url = "/" + path + "?" + url;
  } else {
    url = "/" + path;
  }
  var map = {};
  map["signUrl"] = method + "\n" + sha256 + "\n" + headersStr + "\n" + url;
  map["url"] = url;
  return map;
}
// 计算sign：令牌相关操作调用
function calcSignToken(timestamp, signStr, secret) {
  var str = clientId + timestamp + signStr;
  var hash = CryptoJS.HmacSHA256(str, secret);
  var hashInBase64 = hash.toString();
  var signUp = hashInBase64.toUpperCase();
  return signUp;
}
// 计算sign：业务相关操作调用
function calcSignService(accessToken, timestamp, signStr, secret) {
  var str = clientId + accessToken + timestamp + signStr;
  var hash = CryptoJS.HmacSHA256(str, secret);
  var hashInBase64 = hash.toString();
  var signUp = hashInBase64.toUpperCase();
  return signUp;
}
// 获取sign：请求令牌相关接口时调用
function getSignToken(timestamp, query, path) {
  var signMap = stringToSign(query, path, httpMethod, secret);
  var urlStr = signMap["url"];
  var signStr = signMap["signUrl"];
  var sign = calcSignToken(timestamp, signStr, secret);
  return sign;
}
// 获取sign：请求业务相关接口时调用
function getSignService(accessToken, query, path) {
  var signMap = stringToSign(query, path, httpMethod, secret);
  var urlStr = signMap["url"];
  var signStr = signMap["signUrl"];
  var sign = calcSignService(accessToken, timestamp, signStr, secret);
  return sign;
}
// 获取token：简单模式
function getToken() {
  var query = "grant_type=1";
  var path = "v1.0/token";
  var timestamp = new Date().getTime();
  var settings = {
    "url": "https://openapi-ueaz.tuyaus.com/v1.0/token?grant_type=1",
    "method": "GET",
    "timeout": 0,
    "headers": {
      "client_id": clientId,
      "sign": getSignToken(timestamp, query, path),
      "t": timestamp,
      "sign_method": sign_method
    }
  };
  var accessToken = "";
  $.ajax(settings).done(function(response) {
    accessToken = response.result.access_token;
  });
  return accessToken;
}