// 根目录下执行
protoc --proto_path=/Users/sky/Code/local/go/src --proto_path=./protos/users --go_out=plugins=grpc:./protos/users ./protos/users/*.proto
protoc --proto_path=./protos/common --go_out=plugins=grpc:./protos/common ./protos/common/*.proto
go run server/main.go
go run client/main.go