Grpc helloworld demo的经验

GreeterGrpc.java这个文件是插件protoc-gen-grpc-java生成的

刚开始直接用类似如下的指令无法生成GreeterGrpc.java文件

 protoc --java_out=. helloworld.proto 

 

另外生成的GreeterGrpc.java文件中的@java.lang.Override标签会报错，删除即可

 

 

os.detected.classifier变量的值可以参考https://github.com/trustin/os-maven-plugin

 

示例pom文件

 

<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.kiwi</groupId>

<artifactId>GrpcDemo</artifactId>

<version>0.0.1-SNAPSHOT</version>

<properties>

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

<grpc.version>1.18.0</grpc.version><!-- CURRENT_GRPC_VERSION -->

<protobuf.version>3.5.1</protobuf.version>

<protoc.version>3.5.1-1</protoc.version>

<os.detected.classifier>osx-x86_64</os.detected.classifier>

</properties>

<dependencies>

<dependency>

<groupId>io.grpc</groupId>

<artifactId>grpc-netty-shaded</artifactId>

<version>${grpc.version}</version>

<scope>runtime</scope>

</dependency>

<dependency>

<groupId>io.grpc</groupId>

<artifactId>grpc-protobuf</artifactId>

<version>${grpc.version}</version>

</dependency>

<dependency>

<groupId>io.grpc</groupId>

<artifactId>grpc-stub</artifactId>

<version>${grpc.version}</version>

</dependency>

</dependencies>

<build>

<extensions>

<extension>

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

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

<version>1.5.0.Final</version>

</extension>

</extensions>

<plugins>

<plugin>

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

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

<version>0.5.1</version>

<configuration>

<protocArtifact>com.google.protobuf:protoc:${protoc.version}:exe:${os.detected.classifier}</protocArtifact>

<pluginId>grpc-java</pluginId>

<pluginArtifact>io.grpc: a:${grpc.version}:exe:${os.detected.classifier}</pluginArtifact>

</configuration>

<executions>

<execution>

<goals>

<goal>compile</goal>

<goal>compile-custom</goal>

</goals>

</execution>

</executions>

</plugin>

<plugin>

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

<artifactId>maven-enforcer-plugin</artifactId>

<version>1.4.1</version>

<executions>

<execution>

<id>enforce</id>

<goals>

<goal>enforce</goal>

</goals>

<configuration>

<rules>

<requireUpperBoundDeps/>

</rules>

</configuration>

</execution>

</executions>

</plugin>

</plugins>

</build>

</project>