protobuf使用

protobuf的使用

• protobuf .proto文件 idea安装protobuf插件

   syntax = "proto2";
   package tutorial;
   option java_package = "com.xxx.protobuf";
   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;*/
       required string content = 4;
   }
  

  proto文件详解 https://blog.csdn.net/u014308482/article/details/52958148

• protoc 指定proto文件生成java代码

    protoc -I=$SRC_DIR --java_out=$DST_DIR $SRC_DIR/addressbook.proto
  

• 发送消息

    AddressBookProtos.Person.Builder person = AddressBookProtos.Person.newBuilder();
    person.setId(1);
    person.setContent("xxxx");
    person.setEmail("xlfast@foxmail.com");
    person.setName("xl");
    person.build().writeTo(new FileOutputStream("E:/person"));
  

• 接收消息

    AddressBookProtos.Person person = AddressBookProtos.Person.parseFrom(new FileInputStream("E:/person"));
    System.out.println(person.getId());
    System.out.println(person.getName());
    System.out.println(person.getEmail());
    System.out.println(person.getContent());