syntax = "proto3"; package app; option go_package="122.51.31.227/go-course/go18/skills/rpc/protobuf/app_service"; // 导入包 import "skills/rpc/protobuf/hello_service/interface.proto"; message App { string id = 1; string name = 2; string description = 3; // 通过包名引用其他包里面定义 hello.Request request = 4; hello.Response response = 5; }