ESP8266网络客户端基本操作-01-使用ESP8266HTTPClient库实现网络通讯

www.example.com为测试网址，复制到浏览器打开。可改为自己的服务器地址

/*
 * 使用ESP8266HTTPClient库实现网络通讯
 */
#include <ESP8266WiFi.h>
#include <ESP8266HTTPClient.h>

//测试网址
#define testUrl "http://www.example.com"

//wifi信息
const char* ssid = "1234";//WiFi名称
const char* password = "12341234";//WiFi密码

void setup(){

  //串口设置
  Serial.begin(9600);

  //设置ESP8266为无线终端模式
  WiFi.mode(WIFI_STA);

  //开始连接WIFI
  WiFi.begin(ssid,password);

  //等待WIFI连接
  while(WiFi.status() != WL_CONNECTED){
    delay(1000);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi Connected！");

  httpClientRequest();
}

void loop(){
  
}

//发送http请求并且将服务器响应通过串口输出
void httpClientRequest(){

  //创建HTTPClient对象
  HTTPClient httpClient;

  //通过begin函数 配置请求地址
  httpClient.begin(testUrl);
  Serial.print("URL:");
  Serial.println(testUrl);

  //通过GET函数启动连接并发送HTTP请求
  int httpCode = httpClient.GET();
  Serial.print("Send GET request to URL:");
  Serial.println(testUrl);

  //根据服务器响应码进行对应处理
  if(httpCode == HTTP_CODE_OK){
    String responsePayload = httpClient.getString();
    Serial.print("Server Response Payload:");
    Serial.println(responsePayload);
  }else{
    Serial.print("Server Response Code:");
    Serial.println(httpCode);
  }

  //关闭ESP8266与服务器的连接
  httpClient.close();
}