1. 整合grpc，根据官网推荐的需要自行实现客户端与服务端，详细实现可参考grpc官网
2. 快速实现整合，grpc-spring-boot-starter

   <dependency>
     <groupId>net.devh</groupId>
     <artifactId>grpc-spring-boot-starter</artifactId>
     <version>2.11.0.RELEASE</version>
   </dependency>

3.  详细内容请参考示例代码

4. 定义proto文件

5. 使用grpc-java编译生成java代码

       <properties>
           <os.plugin.version>1.7.0</os.plugin.version>
           <grpc.version>1.31.1</grpc.version>
           <protoc.version>3.13.0</protoc.version>
           <protobuf.plugin.version>0.6.1</protobuf.plugin.version>
       </properties>
   
       <dependencies>
           <dependency>
               <groupId>io.grpc</groupId>
               <artifactId>grpc-stub</artifactId>
               <version>${grpc.version}</version>
           </dependency>
           <dependency>
               <groupId>io.grpc</groupId>
               <artifactId>grpc-protobuf</artifactId>
               <version>${grpc.version}</version>
           </dependency>
           <dependency>
               <groupId>com.google.protobuf</groupId>
               <artifactId>protobuf-java</artifactId>
               <version>${protoc.version}</version>
           </dependency>
   
       </dependencies>
   
       <build>
           <extensions>
               <extension>
                   <groupId>kr.motd.maven</groupId>
                   <artifactId>os-maven-plugin</artifactId>
                   <version>${os.plugin.version}</version>
               </extension>
           </extensions>
           <plugins>
               <plugin>
                   <groupId>org.xolstice.maven.plugins</groupId>
                   <artifactId>protobuf-maven-plugin</artifactId>
                   <version>${protobuf.plugin.version}</version>
                   <extensions>true</extensions>
                   <configuration>
                       <protocArtifact>com.google.protobuf:protoc:${protoc.version}:exe:${os.detected.classifier}</protocArtifact>
                       <pluginId>grpc-java</pluginId>
                       <pluginArtifact>io.grpc:protoc-gen-grpc-java:${grpc.version}:exe:${os.detected.classifier}</pluginArtifact>
                       <!--默认值-->
                       <protoSourceRoot>${project.basedir}/src/main/proto</protoSourceRoot>
                       <!--默认值-->
                       <!--<outputDirectory>${project.build.directory}/generated-sources/protobuf/java</outputDirectory>-->
                       <outputDirectory>${project.basedir}/src/main/java</outputDirectory>
                       <!--设置是否在生成java文件之前清空outputDirectory的文件，默认值为true，设置为false时也会覆盖同名文件-->
                       <clearOutputDirectory>false</clearOutputDirectory>
                       <!--更多配置信息可以查看https://www.xolstice.org/protobuf-maven-plugin/compile-mojo.html-->
                   </configuration>
                   <executions>
                       <execution>
                           <!--在执行mvn compile的时候会执行以下操作-->
                           <phase>compile</phase>
                           <goals>
                               <!--生成OuterClass类-->
                               <goal>compile</goal>
                               <!--生成Grpc类-->
                               <goal>compile-custom</goal>
                           </goals>
                       </execution>
                   </executions>
               </plugin>
           </plugins>
       </build>

   compile 至此，java代码生成完成

6. 使用protoc生成swagger与go代码

   protoc --proto_path=../interactive-common/src/main/proto --go_out=plugins=grpc,Mgoogle/protobuf/descriptor.proto=github.com/golang/protobuf/protoc-gen-go/descriptor:. google/api/annotations.proto google/api/http.proto
   protoc --proto_path=../interactive-common/src/main/proto --go_out=plugins=grpc,Mgoogle/api/annotations.proto=interactive-interview-grpc-gateway/google/api:. common.proto
   protoc --proto_path=../interactive-common/src/main/proto --go_out=plugins=grpc,Mgoogle/api/annotations.proto=interactive-interview-grpc-gateway/google/api,Mcommon.proto=interactive-interview-grpc-gateway/interactive/msg/protobuf:. interView/interView.proto
   protoc --proto_path=../interactive-common/src/main/proto --grpc-gateway_out=logtostderr=true,Mcommon.proto=interactive-interview-grpc-gateway/interactive/msg/protobuf:. interView/interView.proto
   protoc --proto_path=../interactive-common/src/main/proto --swagger_out=logtostderr=true:. interView/interView.proto
   protoc --proto_path=../interactive-common/src/main/proto --grpc-gateway_out=logtostderr=true:. common.proto
   protoc --proto_path=../interactive-common/src/main/proto --swagger_out=logtostderr=true:. common.proto

   import (
   	"context"
   	"flag"
   	"fmt"
   	"github.com/golang/glog"
   	"github.com/grpc-ecosystem/grpc-gateway/runtime"
   	"github.com/rs/cors"
   	"google.golang.org/grpc"
       // 此处导入的是protoc生成的
   	interview "interactive-interview-grpc-gateway/interactive/msg/interview/protobuf"
   	"net/http"
   )
   
   // grpc端口
   var (
   	grpcServerEndpoint = flag.String("grpc-server-endpoint", "127.0.0.1:9003", "gRPC server endpoint")
   	httpServerEndpoint = flag.String("http", ":19003", "http server address")
   	version            = flag.Bool("version", false, "show version")
   )
   
   var VersionName = "1.0.0"
   
   func run() error {
   	ctx := context.Background()
   	ctx, cancel := context.WithCancel(ctx)
   	defer cancel()
   
   	mux := runtime.NewServeMux(runtime.WithMarshalerOption(runtime.MIMEWildcard, &runtime.JSONPb{OrigName: true, EmitDefaults: true}))
   
   	//mux := runtime.NewServeMux()
   	//headers:=&metadata.MD{"token":[]string{"XYZ"}}
   	//grpc.Header(headers)
   	opts := []grpc.DialOption{grpc.WithInsecure()}
   	// RegisterInterViewServiceHandlerFromEndpoint 连接GRPC服务端
   	err := interview.RegisterInterViewServiceHandlerFromEndpoint(ctx, mux, *grpcServerEndpoint, opts)
   	if err != nil {
   		return err
   	}
   	glog.Info("Http服务:", *httpServerEndpoint)
   
   	return http.ListenAndServe(*httpServerEndpoint, cors.AllowAll().Handler(mux))
   }
   func main() {
   	flag.Parse()
   	defer glog.Flush()
   
   	if *version {
   		fmt.Println(VersionName)
   		return
   	}
   
   	if err := run(); err != nil {
   		glog.Fatal(err)
   	}
   
   }

   至此，go客户端编写完成

7. 编译生成exe文件

   go build -o [filename].exe main.go

    

启动服务端，再启动客户端，即可访问proto中定义的接口。