[Bug] proto use option java_multiple_files = false;

[freedom0123]

Pre-check

• I am sure that all the content I provide is in English.

Search before asking

• I had searched in the issues and found no similar issues.

Apache Dubbo Component

Java SDK (apache/dubbo)

Dubbo Version

Dubbo 3.2.0
SpringBoot: 2.7.18
JDK 1.8
OS: window

Steps to reproduce this issue

The proto file

syntax = "proto3";
option java_multiple_files = false;

option java_package = "com.coding.api.protobuf2";

option java_outer_classname = "HelloProtoPro";

message HelloRequestPro {
  string username = 1;
}

message HelloResponsePro {
  string result = 1;
}

service HelloServicePro {
  rpc hello(HelloRequestPro) returns (HelloResponsePro){}
}

The client and server are unable to get the parameter values

the Server code

@DubboService
@Slf4j
public class UserServiceProtobufImpl implements HelloService {
    @Override
    public HelloResponse hello(HelloRequest request) {
        String username = request.getUsername();
        // print log
        HelloResponse.Builder responseBuilder = HelloResponse.newBuilder();
        return responseBuilder.setResult("success").build();
    }

    @Override
    public CompletableFuture<HelloResponse> helloAsync(HelloRequest request) {
        return null;
    }
}

What you expected to happen

proto file support the option

option java_multiple_files = true;

Anything else

No response

Are you willing to submit a pull request to fix on your own?

• Yes I am willing to submit a pull request on my own!

Code of Conduct

• I agree to follow this project's Code of Conduct

[AlbumenJ]

@EarthChen PTAL

[heliang666s]

I can solve it.Please assign to me ~ @AlbumenJ

[heliang666s]

Currently, Dubbo 3.3.x supports the configuration option java_multiple_files = true;, and you need to configure it using the dubbo-maven-plugin (see the dubbo-springboot-idl in the Dubbo demo for more details). However, option java_multiple_files = false; is not supported at the moment, but it may be added in the future. @freedom0123