我按照以下說明創(chuàng)建了一個(gè) grpc 服務(wù)器和客戶端：https://learn.microsoft.com/en-us/aspnet/core/tutorials/grpc/grpc-start ?view=aspnetcore-3.0&tabs=visual-studio 。當(dāng)我嘗試從客戶端調(diào)用服務(wù)時(shí)，客戶端顯示此錯(cuò)誤消息：“發(fā)生一個(gè)或多個(gè)錯(cuò)誤。(Status(StatusCode=Unknown, Detail="No status received"))"和服務(wù)器這個(gè)：info: Microsoft.AspNetCore.Hosting.Diagnostics[1] Request starting HTTP/2 POST http://STEINI-PC/LocationService/GetLocations application/grpcinfo: Microsoft.AspNetCore.Routing.EndpointMiddleware[0] Executing endpoint 'gRPC - gRPC - Unimplemented service'info: Grpc.AspNetCore.Server.Internal.ServerCallHandlerFactory[1] Service 'LocationService' is unimplemented.info: Microsoft.AspNetCore.Routing.EndpointMiddleware[1] Executed endpoint 'gRPC - gRPC - Unimplemented service'info: Microsoft.AspNetCore.Hosting.Diagnostics[2] Request finished in 51.812000000000005ms 200 application/grpc原型文件：syntax = "proto3";service EventService { rpc GetEvents (Empty) returns (Events) {} rpc GetEvent (Id) returns (Event) {} rpc GetEventsByLocation (Id) returns (Events) {} rpc AddEvent (Event) returns (Empty) {} rpc UpdateEvent (Event) returns (Empty) {} rpc DeleteEvent (Id) returns (Event) {}}service LocationService { rpc GetLocations (Empty) returns (Locations) {} rpc GetLocation (Id) returns (Location) {} rpc AddLocation (Location) returns (Empty) {} rpc UpdateLocation (Location) returns (Empty) {} rpc DeleteLocation (Id) returns (Location) {}}service ParticipantService { rpc GetParticipants (Empty) returns (Participants) {} rpc GetParticipant (Id) returns (Participant) {} rpc GetParticipantsFromEvent (Id) returns (Participants) {} rpc AddParticipant (Participant) returns (Empty) {} rpc UpdateParticipant (Participant) returns (Empty) {} rpc DeleteParticipant (Id) returns (Participant) {}}message Empty {}message Id { string id = 1;}
4 回答
暮色呼如
TA貢獻(xiàn)1853條經(jīng)驗(yàn) 獲得超9個(gè)贊
進(jìn)入 programs.cs 并添加您的服務(wù)。
// Configure the HTTP request pipeline.
app.MapGrpcService<GreeterService>(); // here's a service
app.MapGrpcService<UserAuthService>(); // another service i created
app.MapGrpcService<BusinessService>(); // also another service created
app.MapGet("/", () => "Communication with gRPC endpoints must be made through a gRPC client. To learn how to create a client, visit: https://go.microsoft.com/fwlink/?linkid=2086909");
app.Run();
aluckdog
TA貢獻(xiàn)1847條經(jīng)驗(yàn) 獲得超7個(gè)贊
只是為這個(gè)問題貢獻(xiàn)我自己的解決方案，這可能對(duì)那些在 C# 中使用代碼優(yōu)先 grpc 的人有用。
我未能完全轉(zhuǎn)換現(xiàn)有的 GRPC 服務(wù)項(xiàng)目以采用代碼優(yōu)先 GRPC 支持，特別是我的 program.cs 缺少對(duì)以下內(nèi)容的調(diào)用：
builder.Services.AddCodeFirstGrpc();
我的代碼中仍然有替代方案，因此刪除了以下內(nèi)容：
builder.Services.AddGrpc();
此外，我之前按照其他回復(fù)中的建議檢查了我的命名空間混淆代碼。我的 grpc 服務(wù)接口定義和服務(wù)實(shí)現(xiàn)是在不同的命名空間中聲明的，但是一旦使用 AddCodeFirstGrpc() 正確初始化，這不會(huì)導(dǎo)致代碼優(yōu)先 grpc 失敗。
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