protobuf代码生成

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

（这里最重要，注意，protoc可以生成cpp,java,python等多种代码，protoc --help就可以设定对应参数）

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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生成java文件:PersonProbuf.java

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工程文件结构：