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tingyouwutingyouwu
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提交httpclient例子
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‎ESP8266HTTPClientHeader/ESP8266HTTPClientHeader.ino

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/**
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* Demo：
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* 演示Http请求天气接口信息,演示响应头操作
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* @author 单片机菜鸟
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* @date 2019/09/09
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*/
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#include <ESP8266WiFi.h>
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#include <ArduinoJson.h>
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#include <ESP8266HTTPClient.h>
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//以下三个定义为调试定义
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#define DebugBegin(baud_rate) Serial.begin(baud_rate)
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#define DebugPrintln(message) Serial.println(message)
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#define DebugPrint(message) Serial.print(message)
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const char* AP_SSID = "TP-LINK_5344"; // XXXXXX -- 使用时请修改为当前你的 wifi ssid
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const char* AP_PSK = "6206908you11011010"; // XXXXXX -- 使用时请修改为当前你的 wifi 密码
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const char* HOST = "http://api.seniverse.com";
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const char* APIKEY = "wcmquevztdy1jpca"; //API KEY
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const char* CITY = "guangzhou";
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const char* LANGUAGE = "zh-Hans";//zh-Hans 简体中文 会显示乱码
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const char *keys[] = {"Content-Length","Content-Type","Connection","Date"};//需要收集的响应头的信息
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const unsigned long BAUD_RATE = 115200; // serial connection speed
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const unsigned long HTTP_TIMEOUT = 5000; // max respone time from server;
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HTTPClient http;
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String GetUrl;
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String response;
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void setup() {
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// put your setup code here, to run once:
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WiFi.mode(WIFI_STA); //设置esp8266 工作模式
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DebugBegin(BAUD_RATE);
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DebugPrint("Connecting to ");//写几句提示，哈哈
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DebugPrintln(AP_SSID);
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WiFi.begin(AP_SSID, AP_PSK); //连接wifi
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WiFi.setAutoConnect(true);
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while (WiFi.status() != WL_CONNECTED) {
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//这个函数是wifi连接状态，返回wifi链接状态
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delay(500);
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DebugPrint(".");
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}
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DebugPrintln("");
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DebugPrintln("WiFi connected");
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DebugPrintln("IP address: " + WiFi.localIP());
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//拼接get请求url 博哥后面考虑看看是否可以封装一个方法来用用 不需要自己一个个拼装这个url
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GetUrl = String(HOST) + "/v3/weather/now.json?key=";
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GetUrl += APIKEY;
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GetUrl += "&location=";
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GetUrl += CITY;
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GetUrl += "&language=";
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GetUrl += LANGUAGE;
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//设置超时
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http.setTimeout(HTTP_TIMEOUT);
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//设置请求url
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http.begin(GetUrl);
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//以下为设置一些头 其实没什么用 最重要是后端服务器支持
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http.setUserAgent("esp8266");//用户代理版本
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http.setAuthorization("esp8266","boge");//用户校验信息
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http.addHeader("myname","cainiaobo");
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//设置获取响应头的信息
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http.collectHeaders(keys,4);
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}
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void loop() {
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//心知天气 发送http get请求
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int httpCode = http.GET();
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if (httpCode > 0) {
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Serial.printf("[HTTP] GET... code: %d\n", httpCode);
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//判断请求是否成功
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if (httpCode == HTTP_CODE_OK) {
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//读取响应内容
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response = http.getString();
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DebugPrintln("Get the data from Internet!");
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DebugPrintln(response);
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DebugPrintln(String("Content-Length:")+ http.header("Content-Length"));
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DebugPrintln(String("Content-Type:")+ http.header("Content-Type"));
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DebugPrintln(String("Connection:")+ http.header("Connection"));
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DebugPrintln(String("Date:")+ http.header("Date"));
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}
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} else {
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Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
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}
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http.end();
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delay(1000);//每1s调用一次
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}

‎ESP8266HTTPClientWeather/ESP8266HTTPClientWeather.ino

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/**
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* Demo：
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* 演示Http请求天气接口信息
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* @author 单片机菜鸟
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* @date 2019/09/09
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*/
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#include <ESP8266WiFi.h>
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#include <ArduinoJson.h>
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#include <ESP8266HTTPClient.h>
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//以下三个定义为调试定义
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#define DebugBegin(baud_rate) Serial.begin(baud_rate)
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#define DebugPrintln(message) Serial.println(message)
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#define DebugPrint(message) Serial.print(message)
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const char* AP_SSID = "TP-LINK_5344"; // XXXXXX -- 使用时请修改为当前你的 wifi ssid
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const char* AP_PSK = "6206908you11011010"; // XXXXXX -- 使用时请修改为当前你的 wifi 密码
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const char* HOST = "http://api.seniverse.com";
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const char* APIKEY = "wcmquevztdy1jpca"; //API KEY
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const char* CITY = "guangzhou";
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const char* LANGUAGE = "zh-Hans";//zh-Hans 简体中文 会显示乱码
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const unsigned long BAUD_RATE = 115200; // serial connection speed
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const unsigned long HTTP_TIMEOUT = 5000; // max respone time from server
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// 我们要从此网页中提取的数据的类型
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struct WeatherData {
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char city[16];//城市名称
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char weather[32];//天气介绍（多云...）
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char temp[16];//温度
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char udate[32];//更新时间
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};
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HTTPClient http;
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String GetUrl;
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String response;
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WeatherData weatherData;
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void setup() {
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// put your setup code here, to run once:
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WiFi.mode(WIFI_STA); //设置esp8266 工作模式
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DebugBegin(BAUD_RATE);
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DebugPrint("Connecting to ");//写几句提示，哈哈
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DebugPrintln(AP_SSID);
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WiFi.begin(AP_SSID, AP_PSK); //连接wifi
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WiFi.setAutoConnect(true);
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while (WiFi.status() != WL_CONNECTED) {
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//这个函数是wifi连接状态，返回wifi链接状态
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delay(500);
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DebugPrint(".");
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}
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DebugPrintln("");
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DebugPrintln("WiFi connected");
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DebugPrintln("IP address: " + WiFi.localIP());
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//拼接get请求url 博哥后面考虑看看是否可以封装一个方法来用用 不需要自己一个个拼装这个url
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GetUrl = String(HOST) + "/v3/weather/now.json?key=";
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GetUrl += APIKEY;
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GetUrl += "&location=";
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GetUrl += CITY;
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GetUrl += "&language=";
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GetUrl += LANGUAGE;
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//设置超时
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http.setTimeout(HTTP_TIMEOUT);
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//设置请求url
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http.begin(GetUrl);
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//以下为设置一些头 其实没什么用 最重要是后端服务器支持
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http.setUserAgent("esp8266");//用户代理版本
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http.setAuthorization("esp8266","boge");//用户校验信息
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}
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void loop() {
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//心知天气 发送http get请求
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int httpCode = http.GET();
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if (httpCode > 0) {
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Serial.printf("[HTTP] GET... code: %d\n", httpCode);
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//判断请求是否成功
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if (httpCode == HTTP_CODE_OK) {
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//读取响应内容
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response = http.getString();
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DebugPrintln("Get the data from Internet!");
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DebugPrintln(response);
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//解析响应内容
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if (parseUserData(response, &weatherData)) {
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//打印响应内容
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printUserData(&weatherData);
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}
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}
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} else {
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Serial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
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}
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http.end();
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delay(1000);//每5s调用一次
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}
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/**
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* @Desc 解析数据 Json解析
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* 数据格式如下：
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* {
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* "results": [
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* {
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* "location": {
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* "id": "WX4FBXXFKE4F",
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* "name": "北京",
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* "country": "CN",
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* "path": "北京,北京,中国",
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* "timezone": "Asia/Shanghai",
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* "timezone_offset": "+08:00"
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* },
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* "now": {
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* "text": "多云",
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* "code": "4",
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* "temperature": "23"
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* },
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* "last_update": "2017-09-13T09:51:00+08:00"
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* }
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* ]
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*}
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*/
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bool parseUserData(String content, struct WeatherData* weatherData) {
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// -- 根据我们需要解析的数据来计算JSON缓冲区最佳大小
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// 如果你使用StaticJsonBuffer时才需要
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// const size_t BUFFER_SIZE = 1024;
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// 在堆栈上分配一个临时内存池
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// StaticJsonBuffer<BUFFER_SIZE> jsonBuffer;
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// -- 如果堆栈的内存池太大，使用 DynamicJsonBuffer jsonBuffer 代替
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DynamicJsonBuffer jsonBuffer;
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JsonObject& root = jsonBuffer.parseObject(content);
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if (!root.success()) {
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DebugPrintln("JSON parsing failed!");
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return false;
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}
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//复制我们感兴趣的字符串
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strcpy(weatherData->city, root["results"][0]["location"]["name"]);
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strcpy(weatherData->weather, root["results"][0]["now"]["text"]);
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strcpy(weatherData->temp, root["results"][0]["now"]["temperature"]);
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strcpy(weatherData->udate, root["results"][0]["last_update"]);
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// -- 这不是强制复制，你可以使用指针，因为他们是指向“内容”缓冲区内，所以你需要确保
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// 当你读取字符串时它仍在内存中
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return true;
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}
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// 打印从JSON中提取的数据
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void printUserData(const struct WeatherData* weatherData) {
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DebugPrintln("Print parsed data :");
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DebugPrint("City : ");
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DebugPrint(weatherData->city);
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DebugPrint(", \t");
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DebugPrint("Weather : ");
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DebugPrint(weatherData->weather);
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DebugPrint(",\t");
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DebugPrint("Temp : ");
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DebugPrint(weatherData->temp);
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DebugPrint(" C");
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DebugPrint(",\t");
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DebugPrint("Last Updata : ");
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DebugPrint(weatherData->udate);
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DebugPrintln("\r\n");
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}

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