grpc-java-CFANZ编程社区

1. 依赖下载及安装

https://github.com/grpc/grpc-java/

pom.xml

<dependency>
  <groupId>io.grpc</groupId>
  <artifactId>grpc-netty-shaded</artifactId>
  <version>1.51.0</version>
  <scope>runtime</scope>
</dependency>
<dependency>
  <groupId>io.grpc</groupId>
  <artifactId>grpc-protobuf</artifactId>
  <version>1.51.0</version>
</dependency>
<dependency>
  <groupId>io.grpc</groupId>
  <artifactId>grpc-stub</artifactId>
  <version>1.51.0</version>
</dependency>
<dependency> <!-- necessary for Java 9+ -->
  <groupId>org.apache.tomcat</groupId>
  <artifactId>annotations-api</artifactId>
  <version>6.0.53</version>
  <scope>provided</scope>
</dependency>

protobuf-maven-plugin

<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>
        <protocArtifact>com.google.protobuf:protoc:3.21.7:exe:${os.detected.classifier}</protocArtifact>
        <pluginId>grpc-java</pluginId>
        <pluginArtifact>io.grpc:protoc-gen-grpc-java:1.51.0:exe:${os.detected.classifier}</pluginArtifact>
      </configuration>
      <executions>
        <execution>
          <goals>
            <goal>compile</goal>
            <goal>compile-custom</goal>
          </goals>
        </execution>
      </executions>
    </plugin>
  </plugins>
</build>

会有编译不通过问题:解决办法,更改`protocArtifact`版本

<protocArtifact>com.google.protobuf:protoc:3.3.0:exe:${os.detected.classifier}</protocArtifact>
<pluginId>grpc-java</pluginId>
<pluginArtifact>io.grpc:protoc-gen-grpc-java:1.6.1:exe:${os.detected.classifier}</pluginArtifact>
<protoSourceRoot>src/main/proto</protoSourceRoot>
<!--                    <outputDirectory>src/main/java</outputDirectory>-->
<clearOutputDirectory>false</clearOutputDirectory>

2. 编写proto 文件

1. proto 文件目录为/src/main/proto/add.proto

grpc-java_Java

syntax = "proto3";

package hello;
// 输出文件所在包名
option java_package = "com.sun.proto";
// 输出文件名称
option java_outer_classname = "AddProto";
option java_multiple_files = true;

service AddService {
  rpc add(AddRequest) returns (AddReply) {}
}

message AddRequest {
  int32 a = 1;
  int32 b = 2;
}

message AddReply {
  int32 res = 1;
}