proto文件:
option java_package = "protobuf";
option java_outer_classname="PersonProtos";
message Person {
required string name = 1;
required int32 id = 2;
}
将上述proto文件通过protoc.exe转换成java文件后,导入项目(导入过程可以参考上一篇博客)。实现功能的代码如下:
package com.maven.demo.ProtoBuf;
import java.io.IOException;
import protobuf.PersonProtos;
public class App
{
public static void main( String[] args ) throws IOException
{
PersonProtos.Person.Builder personBuilder = PersonProtos.Person.newBuilder();
personBuilder.setId(12);
personBuilder.setName("li ming");
PersonProtos.Person xxg = personBuilder.build();
byte[] byteArray =xxg.toByteArray();
System.out.println( byteArray.length );
}
}