如何用java对接微信小程序下单后的发货接口

import com.alibaba.fastjson.JSONObject;
import lombok.extern.slf4j.Slf4j;
 
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
 
/**
 * @author Alcedo
 * @date 2024/12/08
 * @apiNote
 */
@Slf4j
public class AccessTokenUtil {
    /**
     * 获取accessToken
     * @param appid 小程序appid
     * @param secret 小程序secret
     * @return
     */
    public static String getAccessToken(String appid, String secret) {
        log.info("initAccessToken:开始运行...");
        String accessToken = null;
        //获取tokcen接口
        String url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid="+ appid+"&secret="+secret;
        try {
            URL urlGet = new URL(url);
            HttpURLConnection http = (HttpURLConnection) urlGet.openConnection();
            http.setRequestMethod("GET"); // 必须是get方式请求
            http.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
            http.setDoOutput(true);
            http.setDoInput(true);
            System.setProperty("sun.net.client.defaultConnectTimeout", "30000");// 连接超时30秒
            System.setProperty("sun.net.client.defaultReadTimeout", "30000"); // 读取超时30秒
            http.connect();
            InputStream is = http.getInputStream();
            int size = is.available();
            byte[] jsonBytes = new byte[size];
            is.read(jsonBytes);
            String message = new String(jsonBytes, "UTF-8");
            JSONObject demoJson = JSONObject.parseObject(message);
            accessToken = demoJson.getString("access_token");
 
            log.info("返回accessToken:"+accessToken);
            log.info("initAccessToken:运行结束...");
            is.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
 
        return accessToken;
 
    }
}

@Slf4j
public class HttpUtils {
 
    private final static String CHARSET_DEFAULT = "UTF-8";
 
    /**
     * 上传小程序发货
     *
     * @param mchId          商户号
     * @param outTradeNo     商户订单号
     * @param accessToken    accessToken
     * @param openid         买家openid
     * @param expressCompany 快递公司编码
     * @param trackingNo     快递单号
     * @return
     */
    public static String uploadShippingInfo(String mchId, String outTradeNo, String accessToken, String openid, String desc, String expressCompany, String trackingNo) {
        RestTemplate restTemplate = new RestTemplate();
        String url = "https://api.weixin.qq.com/wxa/sec/order/upload_shipping_info?access_token=" + accessToken;
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(org.springframework.http.MediaType.APPLICATION_JSON);
 
        JSONObject orderKey = new JSONObject();
        // 订单单号类型，用于确认需要上传详情的订单。枚举值1，使用下单商户号和商户侧单号；枚举值2，使用微信支付单号。
        orderKey.put("order_number_type", 1);
        orderKey.put("mchid", mchId);
        //orderKey.put("transaction_id",transactionId);
        orderKey.put("out_trade_no", outTradeNo);
 
        JSONObject shippingList = new JSONObject();
        //商品信息
        shippingList.put("item_desc", desc);
        //物流单号，物流快递发货时必填
        shippingList.put("tracking_no", trackingNo);
        // 快递公司编码，物流快递发货时必填
        shippingList.put("express_company", expressCompany);
 
        JSONObject payer = new JSONObject();
        payer.put("openid", openid);
 
        JSONObject signObject = new JSONObject();
        JSONArray shipping_list = new JSONArray();
        shipping_list.add(shippingList);
 
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");
        String uploadTime = simpleDateFormat.format(System.currentTimeMillis());
 
        signObject.put("order_key", orderKey);
        // 发货模式，发货模式枚举值：1、UNIFIED_DELIVERY（统一发货）2、SPLIT_DELIVERY（分拆发货） 示例值: 1
        signObject.put("delivery_mode", 1);
        // 物流模式，发货方式枚举值：1、实体物流配送采用快递公司进行实体物流配送形式 2、同城配送 3、虚拟商品，虚拟商品，例如话费充值，点卡等，无实体配送形式 4、用户自提
        signObject.put("logistics_type", 4);
        signObject.put("shipping_list", shipping_list);
        signObject.put("upload_time", uploadTime);
        signObject.put("payer", payer);
        log.info("发货信息：{}", signObject);

        // 构建包含请求体数据和请求头的HttpEntity对象
        HttpEntity<JSONObject> requestEntity = new HttpEntity<JSONObject>(signObject, headers);

        ResponseEntity<String> responseEntity = restTemplate.exchange(url, HttpMethod.POST, requestEntity, String.class);
        String body = responseEntity.getBody();
        JSONObject jsonObject = JSONUtil.parseObj(body);
        String errcode = jsonObject.getString("errcode");
        return errcode;
    }
 
}

            String accessToken = (String) stringRedisService.get(StringEnum.WECHAT_ACCESS_TOKEN.getCode());
            if (StringUtils.isEmpty(accessToken)) {
                accessToken = AccessTokenUtil.getAccessToken(appid, secret);
                log.info("Access token: " + accessToken);
                stringRedisService.set(StringEnum.WECHAT_ACCESS_TOKEN.getCode(), accessToken, 7000);
            }