Swift项目使用protobuf

官方文档 ： https://github.com/apple/swift-protobuf

1、配置编译器

• 新建一个文件夹用于存放swift-protobuf
• 下载官方的swift-protobuf : git clone https://github.com/apple/swift-protobuf.git
• 进入下载后的swift-protobuf文件夹 : cd swift-protobuf
• 查看版本：git tag -l 最新版1.8.0
• 选择最新版本执行 ： git checkout tags/1.8.0
• 创建protoc-gen-swift文件 : swift build -c release
• 路径/Users/imac/Desktop/ED/iOS/ProtocolBuffer/swift-protobuf/.build/x86_64-apple-macosx/release/protoc-gen-swift
• 配置protoc-gen-swift
  • 把 protoc-gen-swift 文件直接拷贝到/usr/local/bin目录下

2、编译proto文件

• 在项目中创建Person.proto文件

  syntax = "proto3";
  
  message PersonInfo {
     int64 id = 1;
     string name = 2;
     string address = 3;
  }

• 使用protoc编译Person.proto文件

  • 指令：protoc --swift_out=. Person.proto
  • 生成 ：Person.pb.swift文件
  • 把Person.proto和Person.proto添加到项目中

3、Podfile

• Podfile中需要使用Apple官方库pod 'SwiftProtobuf', '~> 1.8.0'

  # Uncomment this line to define a global platform for your project
  platform :ios, '9.0'
  # Comment this line if you're not using Swift and don't want to use dynamic frameworks
  use_frameworks!
  
  target 'SwiftPBDemo' do
  
  pod 'SwiftProtobuf', '~> 1.8.0'
  
  
  end

4、使用

	func testPB()  {
        var person = PersonInfo()
        person.id = 001
        person.name = "艾德一站通"
        person.address = "彩讯科创中心16层"
        print("person = \(person)")
        /**
         person = SwiftPBDemo.PersonInfo:
         id: 1
         name: "艾德一站通"
         address: "彩讯科创中心16层"
         */
        
        //1、转data
        guard let person2Data :Data = try? person.serializedData() else {
            print("error");
            return
        }
        print("person2Data : \(person2Data)")
        /**
         person2Data : 44 bytes
         */
        
        
        //2、data回转pb
        guard let data2Person = try? PersonInfo(serializedData: person2Data) else {
             print("error")
             return
        }
        print("personFromData : \(data2Person)")
        /**
        personFromData : SwiftPBDemo.PersonInfo:
        id: 1
        name: "艾德一站通"
        address: "彩讯科创中心16层"
        */
        
        
        
        //3、jsonString初始化PB
        let jsonString = "{\"id\":888,\"name\":\"jsonString\",\"address\":\"json address\"}"
        guard let jsonString2Person = try? PersonInfo(jsonString: jsonString) else {
             print("error")
            return
        }
        print("jsonString2Person : \(jsonString2Person)")
        /**
         jsonString2Person : SwiftPBDemo.PersonInfo:
         id: 888
         name: "jsonString"
         address: "json address"
         */
        
        //4、pb转jsonString
        guard let person2JsonString = try? jsonString2Person.jsonString() else{
            print("error")
            return
        }
        print("person2JsonString = \(person2JsonString)")
        /**
         person2JsonString = {"id":"888","name":"jsonPerson","address":"json address"}
         */
        
        
        //5、pb转jsonUTF8
        guard let person2jsonUTF8 = try? person.jsonUTF8Data() else {
            print("Error")
            return
        }
        print("person2jsonUTF8 = \(person2jsonUTF8)")
        /**
         person2jsonUTF8 = 71 bytes
         */
        
        //6、jsonUTF8Data转pb
        guard let jsonUTF8ToPerson = try? PersonInfo(jsonUTF8Data: person2jsonUTF8) else{
            print("error")
            return
        }
        print("jsonUTF8ToPerson = \(jsonUTF8ToPerson)")
        /**
         jsonUTF8ToPerson = SwiftPBDemo.PersonInfo:
         id: 1
         name: "艾德一站通"
         address: "彩讯科创中心16层"
         */
    }