GRPC 服务方法的空参数

Question

我是 golang 和 GRPC 的初学者。我正在尝试使用 React 作为前端，GRPC 而不是 API 和 GoLang 作为后端。我只是想在 add() 服务中传递两个 int64 参数和 return 总和，但是当我尝试登录服务器时参数始终为 0。

service.proto

syntax = "proto3";
package main;
option go_package="./pingpong";

message PingRequest {

}

message PongResponse {
    bool ok = 1;
}

message AdditionRequest {
    int64 param1 = 2;
    int64 param2 = 3;
}

message AdditionResponse {
    int64 output = 4;
}

service PingPong{
    rpc Ping(PingRequest) returns (PongResponse) {};
    rpc Add(AdditionRequest) returns (AdditionResponse) {};
}

server.go

        package handler

    import (
        "context"
        "log"

        "github.com/sibesh/react-go/pingpong"
    )

    // Server is the Logic handler for the server
    // It has to fullfill the GRPC schema generated Interface
    // In this case its only 1 function called Ping
    type Server struct {
        pingpong.UnimplementedPingPongServer
    }

    // Ping fullfills the requirement for PingPong Server interface
    func (s *Server) Ping(ctx context.Context, ping *pingpong.PingRequest) (*pingpong.PongResponse, error) {
        log.Println("Server Requested")
        return &pingpong.PongResponse{
            Ok: true,
        }, nil
    }

    // Ping fullfills the requirement for PingPong Server interface
    func (s *Server) Add(ctx context.Context, request *pingpong.AdditionRequest) (*pingpong.AdditionResponse, error) {
        output := request.GetParam1() + request.GetParam2()
        log.Println("Get Param1: ")
        log.Println(request.GetParam1())
        return &pingpong.AdditionResponse{
            Output: output,
        }, nil
    }

Calculator.js

  let calculate = function (client, param1, param2) {
  return new Promise(function (resolve, reject) {
    try {

      let additionRequest = new AdditionRequest(param1, param2);
      client.add(additionRequest, null, function (err, response) {
        let pong = response.toObject();
        resolve(pong);
      });
    } catch (e) {
      reject(e);
    }
  });
};

calculate(this.client, this.state.param1, this.state.param2)
  .then((results) => {
    console.log(results);
    this.setState(results);
    this.forceUpdate();
  })
  .catch((error) => {
    console.log(error);
  });

服务器控制台输出

2021/04/25 13:04:08 Get Param1: 
2021/04/25 13:04:08 0

在浏览器控制台中输出

即使我发送了参数，即 10 和 20，我在服务器端得到 0。请帮帮我。寻求某种帮助或提示。

Answer 1

实际上我应该使用 setParam1 和 setParam2 来设置如下值：

    let calculate = function (client, param1, param2) {
return new Promise(function (resolve, reject) {
    try {

    let additionRequest = new AdditionRequest();
     additionRequest.setParam1(param1);
     additionRequest.setParam2(param2);
    client.add(additionRequest, null, function (err, response) {
        let pong = response.toObject();
        resolve(pong);
    });
    } catch (e) {
    reject(e);
    }
});
};

GRPC 服务方法的空参数

Empty Parameter For GRPC service method

reactjs

go

grpc

grpc-go