protobuf全称Google Protocol Buffers

1. 下载proto文件编译软件

	下载路径：https://github.com/protocolbuffers/protobuf/releases
	 
	 下载文件：protoc-25.1-win64.zip
	 将 bin 目录配置到环境变量path 中

2. pom引入protobuf-java

        <dependency>
        <groupId>com.google.protobuf</groupId>
        <artifactId>protobuf-java</artifactId>
        <version>3.25.1</version>
  	  </dependency>

3. 编译文件

    在文件目录输入编译命令： protoc ./tran_data.proto --java_out=./

4. 测试方法

	import com.google.protobuf.InvalidProtocolBufferException;
	
	public class TestGpsProtobuf {
	
    public static void main(String[] args) {

        System.out.println("===== 构建一个GPS模型开始 =====");

        PersonData.person_data.Builder builder = PersonData.person_data.newBuilder();
        builder.setName("li.san");
        builder.setAge(20);
        builder.setSex("1");
        builder.setScore(100.5);
        builder.setSpeed(50.2F);
        builder.setId(50L);

        PersonData.person_data gpsData = builder.build();
        System.out.println(gpsData.toString());

        System.out.println("===== 构建模型结束 =====");

        System.out.println("===== Byte 开始=====");
        PersonData.person_data pd = null;

        try {
            pd = PersonData.person_data.parseFrom(gpsData.toByteArray());
        } catch (InvalidProtocolBufferException e) {
            e.printStackTrace();
        }
        System.out.println(String.valueOf(pd));

        System.out.println("===== 反序列化生成对象结束 =====");

    }
}