protocol buffer的简单使用

package tutorial;
option java_package = "com.example.tutorial";
option java_outer_classname = "PersonProtos";

message Person{
	required string name=1;
	required int32 id=2;
	optional string email=3;
	
	message PhoneNumber{
		required string number = 1;
		optional int32 type=2;
	}
	
	repeated PhoneNumber phone=4;
	
}

package com.example.tutorial;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

import com.example.tutorial.PersonProtos.Person;
import com.example.tutorial.PersonProtos.Person.PhoneNumber;

public class ProtocolBufferExample {
	public static void main(String[] args) {
		Person person = Person.newBuilder()
			.setName("zhengqun")
			.setEmail("717401115@qq.com")
			.setId(111)
			.addPhone(PhoneNumber.newBuilder().setNumber("15351506736").setType(1))
			.addPhone(PhoneNumber.newBuilder().setNumber("17751544242").setType(2))
			.build();
		
		FileOutputStream out = null;
		try {
			out = new FileOutputStream("example.txt");
			person.writeTo(out);
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			try {
				out.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		
		FileInputStream in = null;
		try {
			in = new FileInputStream("example.txt");
			Person p = Person.parseFrom(in);
			System.out.println("person2:" + p);
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			try {
				in.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
		
	}
}