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环境:ubuntu 16.04 64位
安装Go
安装过程省略。
安装完成后设置环境变量
开发工具Gogland
安装过程省略。
安装gRPC
go get google.golang.org/grpc
以上过程需要翻墙
安装成功后,会在GOPATH的第一个目录保存相关文件。
安装protoc和go plug-in
下载protoc
https://github.com/google/protobuf/releases
安装go plug-in
go get -u github.com/golang/protobuf/protoc-gen-go
设置环境变量
运行Gogland创建工程FaceRecgonitionServer
目录结构如下
helloworld.proto
syntax = "proto3";option java_multiple_files = true;option java_package = "io.grpc.examples.helloworld";option java_outer_classname = "HelloWorldProto";package helloworld;// The greeting service definition.service Greeter { // Sends a greeting rpc SayHello (HelloRequest) returns (HelloReply) {} rpc SayHelloAgain (HelloRequest) returns (HelloReply) {}}// The request message containing the user's name.message HelloRequest { string name = 1;}// The response message containing the greetingsmessage HelloReply { string message = 1;}编译helloworld.proto,生成helloworld.pb.go
编辑server.go
package mainimport ( "log" "net" "golang.org/x/net/context" "google.golang.org/grpc" pb "pb/helloworld" "google.golang.org/grpc/reflection")const ( port = ":50051")// main is used to implement helloworld.GreeterServer.type server struct{}// SayHello implements helloworld.GreeterServerfunc (s *server) SayHello(ctx context.Context, in *pb.HelloRequest) (*pb.HelloReply, error) { return &pb.HelloReply{Message: "Hello " + in.Name}, nil}func (s *server) SayHelloAgain(ctx context.Context, in *pb.HelloRequest) (*pb.HelloReply, error) { return &pb.HelloReply{Message: "Hello again " + in.Name}, nil}func main() { lis, err := net.Listen("tcp", port) if err != nil { log.Fatalf("failed to listen: %v", err) } s := grpc.NewServer() pb.RegisterGreeterServer(s, &server{}) // Register reflection service on gRPC main. reflection.Register(s) if err := s.Serve(lis); err != nil { log.Fatalf("failed to serve: %v", err) }}
编辑client.go
package mainimport ( "log" "os" "golang.org/x/net/context" "google.golang.org/grpc" pb "pb/helloworld")const ( address = "localhost:50051" defaultName = "chf")func main() { // Set up a connection to the server. conn, err := grpc.Dial(address, grpc.WithInsecure()) if err != nil { log.Fatalf("did not connect: %v", err) } defer conn.Close() c := pb.NewGreeterClient(conn) // Contact the server and print out its response. name := defaultName if len(os.Args) > 1 { name = os.Args[1] } r, err := c.SayHello(context.Background(), &pb.HelloRequest{Name: name}) if err != nil { log.Fatalf("could not greet: %v", err) } log.Printf("Greeting: %s", r.Message) r, err = c.SayHelloAgain(context.Background(), &pb.HelloRequest{Name: name}) if err != nil { log.Fatalf("could not greet: %v", err) } log.Printf("Greeting: %s", r.Message)}
设置GOPATH
运行server
运行client
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