1、下载并配置环境变量
下载地址如下：https://github.com/google/protobuf
2、编写proto文件
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| syntax = "proto3";
option java_package = "io.github.lin38.serialize.demo006.model";
option java_outer_classname = "PlayerModule";
message PBPlayer{
int64 playerId = 1;
int32 age = 2;
string name = 3;
repeated int32 skills = 4;
}
message PBResource{
int64 gold = 1;
int32 energy = 2;
}
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3、执行protoc命令生成java文件
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| protoc -I=proto --java_out=../../../../../ proto/*.proto
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命令说明：
-I 后面是proto文件所在的目录，–java_out 后面是生成java文件存放地址 最后一行是proto文件的名称，可以写绝对地址，也可以直接写proto文件名称
4、添加maven依赖
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| <dependency>
<groupId>com.google.protobuf</groupId>
<artifactId>protobuf-java</artifactId>
<version>3.5.1</version>
</dependency>
<dependency>
<groupId>com.google.protobuf</groupId>
<artifactId>protobuf-java-util</artifactId>
<version>3.5.1</version>
</dependency>
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5、测试
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| package io.github.lin38.serialize.demo006;
import java.util.Arrays;
import com.google.protobuf.InvalidProtocolBufferException;
import com.google.protobuf.util.JsonFormat;
import io.github.lin38.serialize.demo006.model.PlayerModule;
import io.github.lin38.serialize.demo006.model.PlayerModule.PBPlayer;
import io.github.lin38.serialize.demo006.model.PlayerModule.PBPlayer.Builder;
public class Test {
public static void main(String[] args) throws InvalidProtocolBufferException {
Builder builder = PlayerModule.PBPlayer.newBuilder();
builder.setPlayerId(1000);
builder.setAge(20);
builder.setName("peter");
builder.addSkills(101);
PBPlayer player = builder.build();
byte[] bs = player.toByteArray();
System.out.println("序列化完成，结果如下：");
System.out.println(Arrays.toString(bs));
System.out.println("反序列化完成，结果如下：");
PBPlayer player2 = PlayerModule.PBPlayer.parseFrom(bs);
System.out.println(JsonFormat.printer().print(player2));
}
}
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执行结果：
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| 序列化完成，结果如下：
[8, -24, 7, 16, 20, 26, 5, 112, 101, 116, 101, 114, 34, 1, 101]
反序列化完成，结果如下：
{
"playerId": "1000",
"age": 20,
"name": "peter",
"skills": [101]
}
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