如何从原型武夫生成斯卡拉文件而不是 Java 文件

Question

我的目标是在我的项目中使用。通过使用演练，https://developer.lightbend.com/docs/akka-grpc/current/client/walkthrough.html 我试图生成 Scala 文件。但是，每当我（通过）构建项目时，它都会生成Java文件而不是Scala文件。有没有办法生成Scala文件？我已经尝试过将Java转换为斯卡拉，但它不起作用。下面是我的原型文件（与演练中的文件相同）：akka-grpcmvn clean package

syntax = "proto3";

option java_multiple_files = true;

option java_package = "example.myapp.helloworld.grpc";

option java_outer_classname = "HelloWorldProto";

package helloworld;

// The greeting service definition.

service GreeterService {

    // Sends a greeting

    rpc SayHello (HelloRequest) returns (HelloReply) {}

    rpc ItKeepsTalking (stream HelloRequest) returns (HelloReply) {}

    rpc ItKeepsReplying (HelloRequest) returns (stream HelloReply) {}

    rpc StreamHellos (stream HelloRequest) returns (stream HelloReply) {}

}

// The request message containing the user's name.

message HelloRequest {

    string name = 1;

}

// The response message containing the greetings

message HelloReply {

    string message = 1;

}

Answer 1

您应该在 maven 配置中指定这一点。从文档中：<plugin>&nbsp; &nbsp; <groupId>com.lightbend.akka.grpc</groupId>&nbsp; &nbsp; <artifactId>akka-grpc-maven-plugin</artifactId>&nbsp; &nbsp; <version>${akka.grpc.version}</version>&nbsp; &nbsp; <configuration>&nbsp; &nbsp; &nbsp; <language>Scala</language>&nbsp; &nbsp; &nbsp; <generateClient>false</generateClient>&nbsp; &nbsp; &nbsp; <generateServer>true</generateServer>&nbsp; &nbsp; </configuration></plugin>