import cn.hutool.core.codec.Base64;
import cn.hutool.crypto.SecureUtil;
import cn.hutool.http.Header;
import cn.hutool.http.HttpRequest;
import cn.hutool.http.HttpResponse;
import cn.hutool.json.JSONObject;
import cn.hutool.json.JSONUtil;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.time.LocalDateTime;
import java.time.ZoneId;

public void recordGroupQuery() {
    final String baseUrl = "https://api.laaffic.com/v3/voice";
    final String apiKey = "your api key";
    final String apiPwd = "your api secret";

    final Integer current = 1;
    final Integer size = 20;

    final String strTime = "2022-01-01T00:00:00+08:00";
    final String endTime = "2022-01-31T00:00:00+08:00";

    final JSONObject params = JSONUtil.createObj()
            .set("strTime", strTime)
            .set("endTime", endTime);

    final String url = baseUrl.concat("/recordGroupQuery");
    HttpRequest request = HttpRequest.post(url);

    // generate md5 key
    final String datetime = String.valueOf(LocalDateTime.now().atZone(ZoneId.systemDefault()).toInstant().getEpochSecond());
    final String sign = SecureUtil.md5(apiKey.concat(apiPwd).concat(datetime));

    request.header(Header.CONTENT_TYPE, "application/json;charset=UTF-8")
            .header("Sign", sign)
            .header("Timestamp", datetime)
            .header("Api-Key", apiKey);

    final String body = JSONUtil.createObj()
            .set("current", current)
            .set("size", size)
            .set("params", params)
            .toString();

    HttpResponse response = request.body(body).execute();
    if (response.isOk()) {
        String result = response.body();
        System.out.println(result);
    }
}