gRPC编码初探（java）

背景：gRPC是一个高性能、通用的开源RPC框架，其由Google主要面向移动应用开发并基于HTTP/2协议标准而设计，基于ProtoBuf(Protocol Buffers)序列化协议开发，且支持众多开发语言。gRPC提供了一种简单的方法来精确地定义服务和为iOS、Android和后台支持服务自动生成可靠性很强的客户端功能库。客户端充分利用高级流和链接功能，从而有助于节省带宽、降低的TCP链接次数、节省CPU使用、和电池寿命。 以下初探编码过程：

1、安装插件Protobuf-dt最新版本，我的版本为2.2.1

2、下载protobuf

    找到对应操作系统版本（我的系统为OS）直接解压到某个目录（我的目录为：/Users/peng/protoc-3.0.0-beta-2-osx-x86_64），链接：https://github.com/google/protobuf

 3、新建maven项目，过程省略

 4、在pom.xml文件中添加gRPC的相关依赖  

<dependency>
      <groupId>io.grpc</groupId>
      <artifactId>grpc-all</artifactId>
      <version>0.13.2</version>
 </dependency>

 

    添加maven-protobuf-plugin，在pom.xml中添加以下内容

<build> 

    <extensions> 

        <extension> 

            <groupId>kr.motd.maven</groupId> 

            <artifactId>os-maven-plugin</artifactId> 

            <version>1.4.1.Final</version> 

        </extension> 

    </extensions> 

    <plugins> 

        <plugin> 

            <groupId>org.xolstice.maven.plugins</groupId> 

            <artifactId>protobuf-maven-plugin</artifactId> 

            <version>0.5.0</version> 

            <configuration> 

                <!-- 

                  The version of protoc must match protobuf-java. If you don't depend on 

                  protobuf-java directly, you will be transitively depending on the 

                  protobuf-java version that grpc depends on. 

                --> 

                <protocArtifact>com.google.protobuf:protoc:3.0.0-beta-2:exe:${os.detected.classifier}</protocArtifact> 

                <pluginId>grpc-java</pluginId> 

                <pluginArtifact>io.grpc:protoc-gen-grpc-java:0.13.2:exe:${os.detected.classifier}</pluginArtifact> 

                <protocExecutable>/Users/peng/protoc-3.0.0-beta-2-osx-x86_64/protoc</protocExecutable>

            </configuration> 

            <executions> 

                <execution> 

                    <goals> 

                        <goal>compile</goal> 

                        <goal>compile-custom</goal> 

                    </goals> 

                </execution> 

            </executions> 

        </plugin> 

    </plugins> 

</build> 

注意protocExecutable节点后的目录为第2步中protobuf的安装路径

最终的pom.xml文件如下

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>com.mzsg.demo</groupId>
  <artifactId>grpc</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>

  <name>grpc</name>
  <url>http://maven.apache.org</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
     <dependency>
      <groupId>io.grpc</groupId>
      <artifactId>grpc-all</artifactId>
      <version>0.13.2</version>
    </dependency>
  </dependencies>
  
  <build> 
        <extensions> 
            <extension> 
                <groupId>kr.motd.maven</groupId> 
                <artifactId>os-maven-plugin</artifactId> 
                <version>1.4.1.Final</version> 
            </extension> 
        </extensions> 
        <plugins> 
            <plugin> 
                <groupId>org.xolstice.maven.plugins</groupId> 
                <artifactId>protobuf-maven-plugin</artifactId> 
                <version>0.5.0</version> 
                <configuration> 
                    <!-- 
                      The version of protoc must match protobuf-java. If you don't depend on 
                      protobuf-java directly, you will be transitively depending on the 
                      protobuf-java version that grpc depends on. 
                    --> 
                    <protocArtifact>com.google.protobuf:protoc:3.0.0-beta-2:exe:${os.detected.classifier}</protocArtifact> 
                    <pluginId>grpc-java</pluginId> 
                    <pluginArtifact>io.grpc:protoc-gen-grpc-java:0.13.2:exe:${os.detected.classifier}</pluginArtifact> 
                    <protocExecutable>/Users/peng/protoc-3.0.0-beta-2-osx-x86_64/protoc</protocExecutable>
                </configuration> 
                <executions> 
                    <execution> 
                        <goals> 
                            <goal>compile</goal> 
                            <goal>compile-custom</goal> 
                        </goals> 
                    </execution> 
                </executions> 
            </plugin> 
        </plugins> 
    </build> 
</project>

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