根据订单号查询发货单详情接口 dist_order_d_t_os 为空

当 SDK 调用 https://doc.youzanyun.com/doc#/content/API/1-381/detail/api/0/940 为空时，可以参考如下方法将返回值转成字符串

 YouzanTradeDcQueryQuerybyorderno youzanTradeDcQueryQuerybyorderno = new YouzanTradeDcQueryQuerybyorderno();
        //创建参数对象,并设置参数
        YouzanTradeDcQueryQuerybyordernoParams youzanTradeDcQueryQuerybyordernoParams = new YouzanTradeDcQueryQuerybyordernoParams();
        youzanTradeDcQueryQuerybyordernoParams.setIncludeCanceledDistOrder(true);
        youzanTradeDcQueryQuerybyordernoParams.setIncludeOperationLog(true);
        youzanTradeDcQueryQuerybyordernoParams.setTid("E20200603114924012400001");
        youzanTradeDcQueryQuerybyorderno.setAPIParams(youzanTradeDcQueryQuerybyordernoParams);
        YouzanTradeDcQueryQuerybyordernoResult result = yzClient.invoke(youzanTradeDcQueryQuerybyorderno, token, YouzanTradeDcQueryQuerybyordernoResult.class);

把

  YouzanTradeDcQueryQuerybyordernoResult result = yzClient.invoke(youzanTradeDcQueryQuerybyorderno, token, YouzanTradeDcQueryQuerybyordernoResult.class);

改成

String result = yzClient.invoke(youzanTradeDcQueryQuerybyorderno, token, String.class);