基于arduino uno的编写一个获取温湿度数据并通过esp8266WIFIo=模块采取http协议上传数据的代码

下面是一份基于Arduino Uno的获取温湿度数据并通过ESP8266 WIFI模块采用HTTP协议上传数据的代码：

#include <DHT.h>
#include <SoftwareSerial.h>

// 初始化DHT传感器
#define DHTPIN 2
#define DHTTYPE DHT11
DHT dht(DHTPIN, DHTTYPE);

// 初始化ESP8266
SoftwareSerial esp(3, 4); // RX, TX
String ssid = "your_wifi_ssid";
String password = "your_wifi_password";
String server = "your_server_address";
String url = "/your_upload_url";

void setup() {
  Serial.begin(9600);
  esp.begin(9600);
  dht.begin();
  connectWifi();
}

void loop() {
  // 读取温湿度数据
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();

  // 发送HTTP请求上传数据
  if (isnan(humidity) || isnan(temperature)) {
    Serial.println("Failed to read from DHT sensor!");
  } else {
    String data = "temperature=" + String(temperature) + "&humidity=" + String(humidity);
    String request = "POST " + url + " HTTP/1.1\r\n" +
                     "Host: " + server + "\r\n" +
                     "Content-Type: application/x-www-form-urlencoded\r\n" +
                     "Content-Length: " + String(data.length()) + "\r\n" +
                     "Connection: close\r\n\r\n" +
                     data + "\r\n";
    sendHttpRequest(request);
  }

  delay(10000); // 每10秒上传一次数据
}

// 连接WiFi网络
void connectWifi() {
  String cmd = "AT+CWJAP=\"" + ssid + "\",\"" + password + "\"";
  sendCommand(cmd, 5000);
}

// 发送HTTP请求
void sendHttpRequest(String request) {
  String response = "";
  esp.print(request);
  delay(1000);
  while (esp.available()) {
    char c = esp.read();
    response += c;
  }
  Serial.println(response);
}

// 发送AT指令
void sendCommand(String command, int timeout) {
  String response = "";
  esp.println(command);
  delay(timeout);
  while (esp.available()) {
    char c = esp.read();
    response += c;
  }
  Serial.println(response);
}

注意事项：

1. 需要先安装DHT库和SoftwareSerial库。
2. 需要将ESP8266模块与Arduino Uno连接，RX接到Arduino的TX，TX接到Arduino的RX，VCC接到Arduino的5V，GND接到Arduino的GND。
3. 需要将ssid、password、server和url替换成实际的值。