如何在ESP32应用中使用ajax脚本解析json

#include <WiFi.h>
#include <HTTPClient.h>
#include <ArduinoJson.h>

const char* ssid = "your_SSID";
const char* password = "your_PASSWORD";

void setup() {
  Serial.begin(115200);

  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");

  // 创建HTTPClient对象
  HTTPClient http;

  // 发送GET请求到服务器
  http.begin("http://example.com/api/data.json");
  int httpResponseCode = http.GET();

  if (httpResponseCode == 200) {
    // 获取服务器响应
    String response = http.getString();

    // 创建JSON文档对象
    StaticJsonDocument<200> jsonDoc;

    // 解析JSON字符串
    DeserializationError error = deserializeJson(jsonDoc, response);

    if (error) {
      Serial.print("JSON parsing failed: ");
      Serial.println(error.c_str());
    } else {
      // 从JSON对象中提取数据
      int value = jsonDoc["value"];
      Serial.print("Value: ");
      Serial.println(value);
    }
  } else {
    Serial.print("HTTP request failed with error code: ");
    Serial.println(httpResponseCode);
  }

  // 关闭连接
  http.end();
}

void loop() {
  // 程序循环执行
}