qt protobuf使用

2019-11-11 06:50:48

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GitHub:下载地址：https://github.com/google/PRotobuf 自定义.proto文件然后通过工具生成.h/.cc文件这里写图片描述生成.h/.cc文件

pro文件中

CONFIG(debug,debug|release){#debug macx:{ # macOS only LIBS += -L"$$PWD/third_party_lib/lib/macOS" / -lprotobufd/ -lgmappingd } linux-g++:{ # linux only LIBS += -L"$$PWD/third_party_lib/lib/linux_x64" / -lprotobufd/ -lgmappingd } win32:{ # windows only LIBS += -lWs2_32 LIBS += -lnetapi32 LIBS += -lmpr LIBS += -L"$$PWD/third_party_lib/lib/mingw_x86" / -lprotobufd/ -lgmappingd / -lopencv_core2410d.dll/ -lopencv_highgui2410d.dll/ -lopencv_imgproc2410d.dll }} CONFIG(release,debug|release){#release macx:{ # macOS only LIBS += -L"$$PWD/third_party_lib/lib/macOS" / -lprotobuf/ -lgmapping } linux-g++:{ # linux only LIBS += -L"$$PWD/third_party_lib/lib/linux_x64" / -lprotobuf/ -lgmapping } win32:{ # windows only LIBS += -lWs2_32 LIBS += -lnetapi32 LIBS += -lmpr LIBS += -L"$$PWD/third_party_lib/lib/mingw_x86" / -lprotobuf/ -lgmapping / -lopencv_core2410.dll/ -lopencv_highgui2410.dll/ -lopencv_imgproc2410.dll }}

在代码中使用

//.h#include "Messages/message_map.pb.h"Message_MapLog _map_log_;//.cpp#include "google/protobuf/util/json_util.h"#include "google/protobuf/util/type_resolver.h"#include "google/protobuf/util/type_resolver_util.h" //注册MapData信号槽可用 qRegisterMetaType<Message_MapLogData*>("Message_MapLogData*");//读取离线文件数据bool GThreadDrawMap::readOffLineMap(const QString&filename){ _map_log_.Clear(); QFile file(filename); bool is_ok = file.open(QIODevice::ReadOnly); if (is_ok) { QByteArray b = file.readAll(); //-------------------------------- google::protobuf::util::TypeResolver* type_resolver = google::protobuf::util:: NewTypeResolverForDescriptorPool("", google::protobuf::DescriptorPool::generated_pool()); std::string str; std::string str_url = "/"; str_url.append("rbk.protocol.Message_MapLog"); google::protobuf::util::JsonToBinaryString(type_resolver, str_url,b.toStdString(), &str); _map_log_.ParseFromString(str); //----------------------------------- if (""!=str) { is_ok = _map_log_.ParseFromString(str); if(is_ok){ }else{ qDebug()<<"map_data_.ParseFromString: not ok"; } }else{ qDebug()<<"google::protobuf::util::JsonToBinaryString is empty"; PublicClass::init()->showMessage(tr("这是一个空的地图文件")); } file.close(); }else{ PublicClass::init()->showMessage(tr("打开地图文件失败(可能是文件被占用).")); } return is_ok;//Message_MapLog*;}//保存 ofstream ofs(path.toStdString(),ios::out|ios::binary); if (ofs) { google::protobuf::util::TypeResolver* type_resolver = google::protobuf::util::NewTypeResolverForDescriptorPool("",google::protobuf::DescriptorPool::generated_pool()); google::protobuf::util::JsonOptions json_options; std::string json_buffer; std::string str_url = "/"; str_url.append("rbk.protocol.Message_Map"); google::protobuf::util::BinaryToJsonString(type_resolver,str_url,current_map_data_.SerializeAsString(),&json_buffer,json_options); ofs<<json_buffer; ofs.flush(); ofs.close(); }

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