protobuf：Missing input file.

protobuf：Missing input file.

1. 官网解决方法：

protoc -I=./ --go_out=./ ./userInfo.proto
         src           dst src
         源路径        目标路径 源路径

syntax ="proto3";
//package proto;
option go_package = "./;userInfo";
message userInfo{
    string username =1;
    int32 age =2;
    repeated string hobby =3;
}

2. grpc

$ go install google.golang.org/protobuf/cmd/protoc-gen-go@v1.28
$ go install google.golang.org/grpc/cmd/protoc-gen-go-grpc@v1.2

编译

protoc --go_out=. --go_opt=paths=source_relative --go-grpc_out=. --go-grpc_opt=paths=source_relative ./goods.proto

如果编译不成，更新一下

go get github.com/golang/protobuf/protoc-gen-go 
go get: upgraded github.com/golang/protobuf v1.5.0 => v1.5.2