- 最近应为工作的需要,合作的部门提供了protobuf的接口,总结了一下使用的过程和方法如下:
- 下载protobuf-2.3.0:
- http://protobuf.googlecode.com/files/protobuf-2.3.0.zip
- 安装:
- unzip protobuf-2.3.0.zip
- cd protobuf-2.3.0
- ./configure
- make
- make check
- make install
- 结果:
- Libraries have been installed in:
- /usr/local/lib
- Head files hava been installed in:
- /usr/local/include/google/
- protobuf/
- 开始写.proto文件:
- BaseMessage.proto:
- message MessageBase
- {
- required int32 opcode = 1;
- // other: sendMgrId, sendId, recvMgrId, recvId, ...
- }
- message BaseMessage
- {
- required MessageBase msgbase = 1;
- }
- BaseMessage.proto是其它消息proto文件的基础,以容器模块的C2S_GetContainerInfo为例:
- ContainerMessage.proto:
- import "BaseMessage.proto";
- message C2SGetContainerInfoMsg
- {
- required MessageBase msgbase = 1;
- optional int32 containerType = 2;
- }
- .proto文件编写规则:
- 1)所有消息都需要包含msgbase这项,并编号都为1,即:
- required MessageBase msgbase = 1;
- 2)除了msgbase这项写成required外,其它所有项都写成optional。
- 编译 .proto 文件
- protoc -I=. --cpp_out=. BaseMessage.proto
- protoc -I=. --cpp_out=. ContainerMessage.proto
- 生成BaseMessage.pb.h、BaseMessage.pb.cc
- ContainerMessage.pb.h、ContainerMessage.pb.cc
- 将它们添加到工程文件中。
- 编写C++代码:
- 1)发送消息:
- C2SGetContainerInfoMsg msg;
- msg.mutable_msgbase()->set_opcode(C2S_GetContainerInfo);
- msg.set_containertype(1);
- std::string out = msg.SerializeAsString();
- send(sockfd, out.c_str(), out.size(), 0);
- 2)接收消息
- char buf[MAXBUF + 1];
- int len;
- bzero(buf, MAXBUF + 1);
- len = recv(new_fd, buf, MAXBUF, 0);
- if (len > 0)
- {
- printf("%d接收消息成功:'%s',共%d个字节的数据/n",
- new_fd, buf, len);
- BaseMessage baseMsg;
- std::string data = buf;
- baseMsg.ParseFromString(data);
- int opcode = baseMsg.mutable_msgbase()->opcode();
- printf("opcode=%d/n", opcode);
- switch (opcode)
- {
- case C2S_GetContainerInfo:
- {
- C2SGetContainerInfoMsg msg;
- msg.ParseFromString(data);
- printf("containerType=%d/n", msg.containertype());
- break;
- }
- default:
- {
- break;
- }
- }
- }
- else
- {
- if (len < 0)
- printf("消息接收失败!错误代码是%d,错误信息是'%s'/n",
- errno, strerror(errno));
- close(new_fd);
- return -1;
- }
- 编译C++代码:
- Need to link lib:
- protobuf
- pthread
- 参考:
- 1,http://www.360doc.com/content/10/0822/16/11586_47942017.shtml
- 2,http://code.google.com/p/protobuf/
原文地址:http://blog.csdn.net/ganghust/article/details/6115283
项目主页:http://code.google.com/p/protobuf/
下载:http://code.google.com/p/protobuf/downloads/list protobuf-2.4.1.tar.gz
1、./configure(注:默认可能会安装在/usr/local目录下,可以加--prefix=/usr来指定安装到/usr/lib下,可以免去路径的设置,路径设置见Linux命令pkg-config)
2、make
3、make check
4、make install(需要超级用户root权限)