JSON传输数组的基本操作
目标JSON结果如下:
生成JSON的的过程如下:
Document document; Document::AllocatorType& allocator = document.GetAllocator(); //根 Value root(kObjectType); Value records(kArrayType); for (int i = 0;i< signlogList.size();i++) { Value record_info(kObjectType); record_info.SetObject(); record_info.AddMember("id", signlogList[i].face_id, allocator); Value snapshot_time(kStringType); snapshot_time.SetString(signlogList[i].snapshot_time.c_str(), allocator); record_info.AddMember("recoTime", snapshot_time, allocator); Mat faceMat = imread(signlogList[i].snapshot_url); vector<uchar> buff;//buffer for coding vector<int> param = vector<int>(2); param[0]=CV_IMWRITE_JPEG_QUALITY; param[1]=95;//default(95) 0-100 imencode(".jpg",faceMat,buff,param); char* imgData = new char[buff.size()]; memset(imgData, 0, buff.size()); for (int ii=0;ii < buff.size();ii++) { imgData[ii] = buff[ii]; } std::string imgBase64=""; CBase64::Encode((uchar*)imgData, buff.size(),imgBase64); delete[] imgData; imgData = NULL; Value pic(kStringType); pic.SetString(imgBase64.c_str(), allocator); record_info.AddMember("pic", pic, allocator); record_info.AddMember("sim", signlogList[i].score, allocator); records.PushBack(record_info, allocator); } root.AddMember("records", records, allocator); string strTime = get_current_datetime(); Value sendTime(kStringType); sendTime.SetString(strTime.c_str(), allocator); root.AddMember("sendTime", sendTime, allocator); string strMD5 = Common::Utility::generate_md5(strTime+config_info_.tianyu_order.key); Value sign(kStringType); sign.SetString(strMD5.c_str(), allocator); root.AddMember("sign", sign, allocator);