序列化json和protobuf大小比較

使用protobuf序列化爲二進制和json序列化字符串大小比較

代碼demo

package com.gxf.demo; import java.io.*; public class PtotobufDemo { public static void main(String[] args) throws IOException { AddressBookProtos.Person gxf = AddressBookProtos.Person.newBuilder() .setId(1234) .setName("guan xianseng") .setEmail("guanxianseng@example.com") .addPhones( AddressBookProtos.Person.PhoneNumber.newBuilder() .setNumber("555-4321") .setType(AddressBookProtos.Person.PhoneType.HOME)) .build(); String s = gxf.toString(); System.out.println("json length: " + s.length()); System.out.println(s); byte[] bytes = gxf.toByteArray(); String filePath = "./log"; File logFile = new File(filePath); OutputStream outputStream = new FileOutputStream(logFile); gxf.writeTo(outputStream); //json寫到文件
 writeTextFile(s); System.out.println(bytes.length); } /** * 寫入文本文件 * */
    private static void writeTextFile(String content) throws IOException { File writename = new File("./json.txt"); // 相對路徑，若是沒有則要創建一個新的output。txt文件
        writename.createNewFile(); // 建立新文件
        BufferedWriter out = new BufferedWriter(new FileWriter(writename)); out.write(content); // \r\n即爲換行
        out.flush(); // 把緩存區內容壓入文件
        out.close(); // 最後記得關閉文件
 } }

proto文件

syntax = "proto2";

package demo;

option java_package = "com.gxf.demo";
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 phones = 4;
}

message AddressBook {
  repeated Person people = 1;
}

pb:58字節

json:110字節，刪掉空格還有100字節