c++参考
https://developers.google.com/protocol-buffers/docs/cpptutorial?hl=zh-CN
http://www.cppblog.com/woaidongmao/archive/2009/06/23/88391.aspx
https://developers.google.com/protocol-buffers/docs/encoding?hl=zh-CN
java代码
protoc.exe addressbook.proto --cpp_out=addressbook