protobuf优点
1.性能好/效率高
2.有代码生成机制
3.支持向后兼容和向前兼容
4.支持多种编程语言
protobuf缺陷
1.二进制格式导致可读性差
2.缺乏自描述
maven 整合 protobuf-plugin
pom.xml
<properties>
<!--protobuf 版本号-->
<protobuf.version>3.6.0</protobuf.version>
<!--grpc版本号-->
<grpc.version>1.7.0</grpc.version>
</properties>
<dependencies>
<dependency>
<groupId>com.google.protobuf</groupId>
<artifactId>protobuf-java-util</artifactId>
<version>${protobuf.version}</version>
</dependency>
<dependency>
<groupId>io.grpc</groupId>
<artifactId>grpc-all</artifactId>
<version>${grpc.version}</version>
</dependency>
</dependencies>
<build>
<extensions>
<extension>
<groupId>kr.motd.maven</groupId>
<artifactId>os-maven-plugin</artifactId>
<version>1.6.2</version>
</extension>
</extensions>
<plugins>
<plugin>
<groupId>org.xolstice.maven.plugins</groupId>
<artifactId>protobuf-maven-plugin</artifactId>
<version>0.6.1</version>
<configuration>
<!-- 指定代码生成到 src 下-->
<outputDirectory>${basedir}/src/main/proto/bean</outputDirectory>
<protoSourceRoot>${basedir}/src/main/proto</protoSourceRoot><!--默认的proto文件路径-->
<!--Protobuf compiler artifact specification, in groupId:artifactId:version[:type[:classifier]] format. When this parameter is set, the plugin attempts to resolve the specified artifact as protoc executable.-->
<protocArtifact>com.google.protobuf:protoc:${protobuf.version}:exe:${os.detected.classifier}
</protocArtifact>
<pluginId>grpc-java</pluginId>
<pluginArtifact>io.grpc:protoc-gen-grpc-java:${grpc.version}:exe:${os.detected.classifier}
</pluginArtifact>
</configuration>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>compile-custom</goal> <!--按照指定的插件进行编译,即按照GRPC协议编译protob文件-->
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
在 /src/main/proto 中创建对应proto 对象
syntax = "proto3"; // 版本信息
option java_package = "com.jihite"; // 对应的包名
option java_outer_classname = "PersonMessage"; // 文件名称
message Person {
int32 id = 1;
string name = 2;
string email = 3;
}
在maven中执行
在使用时
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必须添加否则不能运行