https://gitee.com/dyyx/hellocode/tree/master/demo/grpc-demo


maven protobuf 插件生成 grpc 相关文件

protobuf:compile
protobuf:compile-custom


protobuf:compile
生成消息文件
target/generated-sources/protobuf/java
HelloReply
HelloReplyOrBuilder
HelloRequest
HelloRequestOrBuilder
HelloWorldProto

protobuf:compile-custom
生成接口服务文件
target/generated-sources/protobuf/grpc-java
GreeterGrpc


把 java 和 grpc-java 两个目录标记为源码目录


src/main/proto/helloworld.proto

syntax = "proto3";

option java_multiple_files = true;
option java_package = "io.grpc.examples.helloworld";
option java_outer_classname = "HelloWorldProto";
option objc_class_prefix = "HLW";

package helloworld;

// The greeting service definition.
service Greeter {
  // Sends a greeting
  rpc SayHello (HelloRequest) returns (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;
}



先运行 HelloWorldServer
再启动 HelloWorldClient



 idea设置源码目录 
 protobuf 简介 及 java实例 
 maven插件编译proto文件