ProtoBuf 的java使用

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碰巧用到Proto,算是笔记吧算是笔记吧，

windows :

1,两个文件：proto.exe, protobuf-java-2.4.1.jar

2,建立一个工程TestPb，在下面建立一个proto文件件，用来存放【。proto】文件
3，将proto,exe放在工程下，

4，建立一个msg.proto文件：

option java_package = "com.protobuftest.protobuf";
option java_outer_classname = "PersonProbuf";

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 CountryInfo {
required string name = 1;
required string code = 2;
optional int32 number = 3;
}
}

message AddressBook {
repeated Person person = 1;
}
5，生成 java文件：在proto.exe目录下：protoc --java_out=./src ./proto/msg.proto

6,copy个测试示例了

新建一个文件TestPb.java
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package com.protobuftest.protobuf;

import java.util.List;

import com.google.protobuf.InvalidProtocolBufferException;
import com.protobuftest.protobuf.PersonProbuf;
import com.protobuftest.protobuf.PersonProbuf.Person;
import com.protobuftest.protobuf.PersonProbuf.Person.PhoneNumber;

public class TestPb {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
PersonProbuf.Person.Builder builder = PersonProbuf.Person.newBuilder();
builder.setEmail("kkk@email.com");
builder.setId(1);
builder.setName("TestName");
builder.addPhone(PersonProbuf.Person.PhoneNumber.newBuilder().setNumber("131111111").setType(PersonProbuf.Person.PhoneType.MOBILE));
builder.addPhone(PersonProbuf.Person.PhoneNumber.newBuilder().setNumber("011111").setType(PersonProbuf.Person.PhoneType.HOME));

Person person = builder.build();
byte[] buf = person.toByteArray();

try {
Person person2 = PersonProbuf.Person.parseFrom(buf);
System.out.println(person2.getName() + ", " + person2.getEmail());
List<PhoneNumber> lstPhones = person2.getPhoneList();
for (PhoneNumber phoneNumber : lstPhones) {
System.out.println(phoneNumber.getNumber());
}
} catch (InvalidProtocolBufferException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

System.out.println(buf);

}

}
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