Scala 2.13.12编译ZIO-gRPC生成类时出现包名无效错误

编译项目时出现如下错误：

[error] C:\Users\arsen\IdeaProjects\voicekit-grpc\target\scala-2.13\src_managed\main\scalapb\tinkoff\cloud\stt\v1\SpeechToText\SpeechToTextProto.scala:10:20: object annotations is not a member of package com.google.api
[error]     com.google.api.annotations.AnnotationsProto,
[error]                    ^
[error] C:\Users\arsen\IdeaProjects\voicekit-grpc\target\scala-2.13\src_managed\main\scalapb\tinkoff\cloud\stt\v1\SpeechToText\SpeechToTextProto.scala:129:22: object annotations is not a member of package com.google.api
[error]       com.google.api.annotations.AnnotationsProto.javaDescriptor,
[error]                      ^
[error] two errors found

相关文件内容 #

.proto文件 #

syntax = "proto3";

package tinkoff.cloud.stt.v1;
option go_package = "github.com/Tinkoff/voicekit-examples/golang/pkg/tinkoff/cloud/stt/v1";
option objc_class_prefix = 'TVKSR';

import "google/protobuf/duration.proto";
import "google/api/annotations.proto";

service SpeechToText { // Speech recognition.
  rpc Recognize(RecognizeRequest) returns (RecognizeResponse) { // Method to recognize whole audio at once: sending complete audio, getting complete recognition result.
    option (google.api.http) = {
      post: "/v1/stt:recognize"
      body: "*"
    };
  }
  rpc StreamingRecognize(stream StreamingRecognizeRequest)
    returns (stream StreamingUnaryRecognizeResponse); // Method for streaming recognition.

  rpc StreamingUnaryRecognize(stream StreamingUnaryRecognizeRequest) returns (RecognizeResponse) { // Method to synchronous recognize audio stream. Returns recognition result after all audio has been sent and processed.
    option (google.api.http) = {
      post: "/v1/stt:streaming_unary_recognize";
      body: "*";
    };
  }
}
......

build.sbt #

import scala.tools.nsc.io.JFile

lazy val root = project
  .in(file("."))
  .settings(
    name := "voicekit-grpc",
    version := "0.1.0-SNAPSHOT",

    scalaVersion := "2.13.12",
    Compile / PB.targets := Seq(
      scalapb.gen(grpc = true) -> (Compile / sourceManaged).value / "scalapb",
      scalapb.zio_grpc.ZioCodeGenerator -> (Compile / sourceManaged).value / "scalapb"
    ),
    Compile / PB.includePaths ++= Seq(new JFile("third_party/googleapis/")),
    libraryDependencies ++= Seq(
      "io.grpc" % "grpc-netty" % "1.50.1",
      "com.thesamet.scalapb" %% "scalapb-runtime-grpc" % scalapb.compiler.Version.scalapbVersion,
      "com.typesafe" % "config" % "1.4.3",
      "dev.zio" %% "zio-http" % "0.0.5",
      "com.fasterxml.jackson.core" % "jackson-databind" % "2.16.1",
      "com.fasterxml.jackson.module" %% "jackson-module-scala" % "2.16.1",
      "com.thesamet.scalapb" %% "scalapb-runtime" % scalapb.compiler.Version.scalapbVersion % "protobuf"
    )
  )

plugins.sbt #

addSbtPlugin("com.thesamet" % "sbt-protoc" % "1.0.6")

libraryDependencies ++= Seq(
  "com.thesamet.scalapb.zio-grpc" %% "zio-grpc-codegen" % "0.6.1")

1. 验证googleapis目录结构 #

确认手动下载的third_party/googleapis/目录下存在完整路径：google/api/annotations.proto。如果目录层级错误，调整结构让scalapb能定位到该proto文件。

2. 添加google-api-common-protos依赖 #

在build.sbt的libraryDependencies中补充以下依赖，它包含annotations.proto对应的runtime类：

"com.google.api.grpc" % "google-api-common-protos" % "2.20.0" % "protobuf"

3. 清理并重新编译 #

执行sbt命令清理旧生成文件，重新触发代码生成与编译：

sbt clean compile

4. 确认PB.includePaths配置 #

确保PB.includePaths指向的是包含google/文件夹的googleapis根目录。如果你的third_party/googleapis/下直接是google/目录，当前配置无需调整；否则修改路径指向正确的根目录。

内容的提问来源于stack exchange，提问作者senyanyash