protobuf的使用

google下载protobuf，http://code.google.com/p/protobuf/downloads/list

protobuf-2.4.1.tar.bz2

 

#tar jxvf protobuf-2.4.1.tar.bz2

#cd protobuf-2.4.1

#./configure

#make

#sudo make install

 

运行，ubuntu下默认报错

protoc: error while loading shared libraries: libprotobuf.so.7: cannot open shared object file: No such file or directory

protoc: error while loading shared libraries: libprotoc.so.7: cannot open shared object file: No such file or directory

建一下硬链接

#cd /usr/lib

#sudo ln -s /usr/local/lib/libprotobuf.so.7 libprotobuf.so.7

#sudo ln -s /usr/local/lib/libprotoc.so.7 libprotoc.so.7

接下来写一个.proto扩张名的文件addressbook.proto

package tutorial;

option java_package = "com.example.tutorial";
option java_outer_classname = "AddressBookProtos";

message Person {
  required string name = 1;
  required int32 id = 2;
  optional string email = 3;

  enum PhoneType {
    MOBILE = 0;
    HOME = 1;
    WORK = 2;
  }

  message PhoneNumber {
    required string number = 1;
    optional PhoneType type = 2 [default = HOME];
  }

  repeated PhoneNumber phone = 4;
}

message AddressBook {
  repeated Person person = 1;
}

 具体意思见http://code.google.com/intl/zh-CN/apis/protocolbuffers/docs/javatutorial.html

编译程java代码

# protoc --java_out=./  addressbook.proto

ok，我们的java文件生成了，引入工程会报错，这时候还需要一个protobuf-java-2.4.1.jar

#cd /path/protobuf-2.4.1/java

#mvn package #需要mvn支持

编译完成在target下面就能找到protobuf-java-2.4.1.jar了，拷贝到工程lib下面就好