215 lines
6.5 KiB
C++
215 lines
6.5 KiB
C++
#include "Forecast.h"
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Forecast::Forecast(){
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}
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/* 配置心知天气请求信息
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* @param userKey 用户心知天气私钥
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* @param location 获取信息的城市参数
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* @param unit 获取信息的温度单位(摄氏/华氏)
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* @param language 获取信息的语言(简体中文zh-Hans/繁体中文zh-Hant/英文en)
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*/
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void Forecast::config(String userKey, String location, String unit, String language){
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_reqUserKey = userKey;
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_reqLocation = location;
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_reqUnit = unit;
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_reqLanguage = language;
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}
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/* 尝试从心知天气更新天气预报信息
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* @return: bool 成功更新返回真，否则返回假
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*/
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bool Forecast::update(){
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WiFiClient _wifiClient;
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String reqRes = "/v3/weather/daily.json?key=" + _reqUserKey +
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+ "&location=" + _reqLocation + "&language=" + _reqLanguage + "&unit=" +
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_reqUnit + "&start=0&days=3";
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String httpRequest = String("GET ") + reqRes + " HTTP/1.1\r\n" +
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"Host: " + _host + "\r\n" +
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"Connection: close\r\n\r\n";
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#ifdef DEBUG
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Serial.print("Connecting to ");Serial.print(_host);
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#endif DEBUG
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if (_wifiClient.connect(_host, 80)){
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#ifdef DEBUG
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Serial.println(" Success!");
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#endif DEBUG
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// 向服务器发送http请求信息
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_wifiClient.print(httpRequest);
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#ifdef DEBUG
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Serial.println("Sending request: ");
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Serial.println(httpRequest);
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#endif DEBUG
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// 获取并显示服务器响应状态行
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String _status_response = _wifiClient.readStringUntil('\n');
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#ifdef DEBUG
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Serial.print("_status_response: ");
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Serial.println(_status_response);
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#endif DEBUG
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// 查验服务器是否响应200 OK
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_response_code = _status_response.substring(9, 12);
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if (_response_code == "200") {
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#ifdef DEBUG
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Serial.println("Response Code: 200");
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#endif DEBUG
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} else {
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#ifdef DEBUG
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Serial.println(F("Response Code: NOT 200"));
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#endif DEBUG
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_wifiClient.stop();
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return false;
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}
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// 使用find跳过HTTP响应头
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if (_wifiClient.find("\r\n\r\n")) {
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#ifdef DEBUG
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Serial.println("Found Header End. Start Parsing.");
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#endif DEBUG
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}
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// 解析服务器响应信息
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_parseForecastInfo(_wifiClient);
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_wifiClient.stop();
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return true;
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} else {
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#ifdef DEBUG
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Serial.println(" connection failed!");
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#endif DEBUG
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_wifiClient.stop();
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return false;
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}
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}
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// 解析服务器响应信息
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void Forecast::_parseForecastInfo(WiFiClient httpClient){
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const size_t capacity = JSON_ARRAY_SIZE(1) + JSON_ARRAY_SIZE(3) + JSON_OBJECT_SIZE(1) + JSON_OBJECT_SIZE(3) + JSON_OBJECT_SIZE(6) + 3*JSON_OBJECT_SIZE(14) + 860;
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DynamicJsonDocument doc(capacity);
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deserializeJson(doc, httpClient);
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JsonObject results_0 = doc["results"][0];
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JsonArray results_0_daily = results_0["daily"];
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JsonObject results_0_daily_0 = results_0_daily[0];
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JsonObject results_0_daily_1 = results_0_daily[1];
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JsonObject results_0_daily_2 = results_0_daily[2];
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// 从以上信息中解析数值
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_text_day[0] = results_0_daily_0["text_day"].as<String>();
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_code_day[0] = results_0_daily_0["code_day"].as<int>();
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_text_night[0] = results_0_daily_0["text_night"].as<String>();
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_code_night[0] = results_0_daily_0["code_night"].as<int>();
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_degree_high[0] = results_0_daily_0["high"].as<int>();
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_degree_low[0] = results_0_daily_0["low"].as<int>();
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_rainfall[0] = results_0_daily_0["rainfall"].as<float>();
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_wind_direction[0] = results_0_daily_0["wind_direction"].as<String>();
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_wind_speed[0] = results_0_daily_0["wind_speed"].as<float>();
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_wind_scale[0] = results_0_daily_0["wind_scale"].as<int>();
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_humidity[0] = results_0_daily_0["humidity"].as<int>();
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_text_day[1] = results_0_daily_1["text_day"].as<String>();
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_code_day[1] = results_0_daily_1["code_day"].as<int>();
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_text_night[1] = results_0_daily_1["text_night"].as<String>();
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_code_night[1] = results_0_daily_1["code_night"].as<int>();
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_degree_high[1] = results_0_daily_1["high"].as<int>();
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_degree_low[1] = results_0_daily_1["low"].as<int>();
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_rainfall[1] = results_0_daily_1["rainfall"].as<float>();
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_wind_direction[1] = results_0_daily_1["wind_direction"].as<String>();
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_wind_speed[1] = results_0_daily_1["wind_speed"].as<float>();
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_wind_scale[1] = results_0_daily_1["wind_scale"].as<int>();
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_humidity[1] = results_0_daily_1["humidity"].as<int>();
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_text_day[2] = results_0_daily_2["text_day"].as<String>();
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_code_day[2] = results_0_daily_2["code_day"].as<int>();
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_text_night[2] = results_0_daily_2["text_night"].as<String>();
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_code_night[2] = results_0_daily_2["code_night"].as<int>();
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_degree_high[2] = results_0_daily_2["high"].as<int>();
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_degree_low[2] = results_0_daily_2["low"].as<int>();
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_rainfall[2] = results_0_daily_2["rainfall"].as<float>();
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_wind_direction[2] = results_0_daily_2["wind_direction"].as<String>();
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_wind_speed[2] = results_0_daily_2["wind_speed"].as<float>();
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_wind_scale[2] = results_0_daily_2["wind_scale"].as<int>();
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_humidity[2] = results_0_daily_2["humidity"].as<int>();
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_last_update = results_0["last_update"].as<String>();
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}
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// 返回白天天气（字符串格式）
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String Forecast::getDayText(int index){
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return _text_day[index];
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}
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// 返回白天天气（整数格式）
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int Forecast::getDayCode(int index){
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return _code_day[index];
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}
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// 返回夜晚天气（字符串格式）
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String Forecast::getNightText(int index){
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return _text_night[index];
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}
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// 返回夜晚天气（整数格式）
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int Forecast::getNightCode(int index){
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return _code_night[index];
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}
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// 返回最高气温
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int Forecast::getHigh(int index){
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return _degree_high[index];
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}
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// 返回最低气温
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int Forecast::getLow(int index){
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return _degree_low[index];
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}
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// 返回降水概率
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float Forecast::getRain(int index){
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return _rainfall[index];
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}
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// 获取风向信息
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String Forecast::getWindDirection(int index){
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return _wind_direction[index];
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}
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// 获取风速信息
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float Forecast::getWindSpeed(int index){
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return _wind_speed[index];
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}
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// 获取风力信息
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int Forecast::getWindScale(int index){
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return _wind_scale[index];
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}
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// 获取湿度信息
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int Forecast::getHumidity(int index){
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return _humidity[index];
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}
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// 返回心知天气信息更新时间
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String Forecast::getLastUpdate(){
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return _last_update;
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}
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// 返回服务器响应状态码
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String Forecast::getServerCode(){
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return _response_code;
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}
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