Java中使用Protocol Buffer的简单教程

首先下载2.4.1的安装包 http://code.google.com/p/protobuf/downloads/ 安装命令示例如下：

 tar -xzf protobuf-2.1.0.tar.gz  cd protobuf-2.1.0  ./configure --prefix=$INSTALL_DIR  make  make check  make install 

1）编写一个Protocol文件，保存为 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;}

2）执行如下命令，$SRC_DIR为address.proto文件的目录，$DST_DIR为生成java文件的目录

protoc -I=$SRC_DIR --java_out=$DST_DIR $SRC_DIR/addressbook.proto

就可以生成可用的Java类文件了

3）Protocol Buffer的Maven配置

<dependency>

<groupId>com.google.protobuf</groupId>

<artifactId>protobuf-java</artifactId>

<version>2.4.1</version>

</dependency>

4）代码使用

Java代码构建Address对象：

AddressBookProtos.Person person = AddressBookProtos.Person.newBuilder().setId(2234).setName("Benson Peng").build();

AddressBookProtos.AddressBook address = AddressBookProtos.AddressBook.newBuilder().addPerson(person).build();

参考文献：

1）Google官方教程 http://code.google.com/intl/zh-CN/apis/protocolbuffers/docs/javatutorial.html

2）Google Protocol Buffer的原理和使用 http://www.ibm.com/developerworks/cn/linux/l-cn-gpb/?ca=drs-tp4608