C＃的Protoc 3.9編譯輸出失敗

Question

運行時環境：.net core 2.2，.net framework 4.6.1的相同問題

嘗試為Google Assistant SDK的C＃創建gRPC綁定時，在EmbeddedAssistant.g.cs中出現編譯時錯誤“無法從System.Type轉換為Google.Type”

可供下載的項目

https://drive.google.com/file/d/1Pbmg0Zk-ozXHkWT6a6FMmBt79MTHn7_t/view?usp=sharing

我也在Google.Protobuf上遇到錯誤

“類型”是一個名稱空間，但其使用方式類似於類型。

細節

我按照說明將Google Assistant集成為C＃（其他語言：gRPC）

1. 在本地磁盤上克隆Google API
2. 我下載了Protoc Compiler最新版本
3. 按照說明生成EmbeddedAssistant.g.cs文件

4. 早先引發錯誤，表明Google.Protobuf.Collections和Google.Protobuf.Reflection不可用，因此我從＃2的鏈接下載了protobuf-csharp-3.9.0.zip ，將Google.Protobuf文件夾復制到了我的項目文件夾中，錯誤走了。

5. 對於Google.API和Google.Type錯誤，我遵循了這篇Stackoverflow文章 ，並已解決。

錯誤的編譯輸出：

   descriptor = pbr::FileDescriptor.FromGeneratedCode(descriptorData,
          new pbr::FileDescriptor[] { global::Google.Api.AnnotationsReflection.Descriptor, global::Google.Type.LatlngReflection.Descriptor, },
          new pbr::GeneratedClrTypeInfo(null, null, new pbr::GeneratedClrTypeInfo[] {
            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Assistant.Embedded.V1Alpha2.AssistRequest), global::Google.Assistant.Embedded.V1Alpha2.AssistRequest.Parser, new[]{ "Config", "AudioIn" }, new[]{ "Type" }, null, null, null),
            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Assistant.Embedded.V1Alpha2.AssistResponse), global::Google.Assistant.Embedded.V1Alpha2.AssistResponse.Parser, new[]{ "EventType", "AudioOut", "ScreenOut", "DeviceAction", "SpeechResults", "DialogStateOut", "DebugInfo" }, null, new[]{ typeof(global::Google.Assistant.Embedded.V1Alpha2.AssistResponse.Types.EventType) }, null, null),
            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Assistant.Embedded.V1Alpha2.DebugInfo), global::Google.Assistant.Embedded.V1Alpha2.DebugInfo.Parser, new[]{ "AogAgentToAssistantJson" }, null, null, null, null),
            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Assistant.Embedded.V1Alpha2.AssistConfig), global::Google.Assistant.Embedded.V1Alpha2.AssistConfig.Parser, new[]{ "AudioInConfig", "TextQuery", "AudioOutConfig", "ScreenOutConfig", "DialogStateIn", "DeviceConfig", "DebugConfig" }, new[]{ "Type" }, null, null, null),
            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Assistant.Embedded.V1Alpha2.AudioInConfig), global::Google.Assistant.Embedded.V1Alpha2.AudioInConfig.Parser, new[]{ "Encoding", "SampleRateHertz" }, null, new[]{ typeof(global::Google.Assistant.Embedded.V1Alpha2.AudioInConfig.Types.Encoding) }, null, null),
            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Assistant.Embedded.V1Alpha2.AudioOutConfig), global::Google.Assistant.Embedded.V1Alpha2.AudioOutConfig.Parser, new[]{ "Encoding", "SampleRateHertz", "VolumePercentage" }, null, new[]{ typeof(global::Google.Assistant.Embedded.V1Alpha2.AudioOutConfig.Types.Encoding) }, null, null),
            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Assistant.Embedded.V1Alpha2.ScreenOutConfig), global::Google.Assistant.Embedded.V1Alpha2.ScreenOutConfig.Parser, new[]{ "ScreenMode" }, null, new[]{ typeof(global::Google.Assistant.Embedded.V1Alpha2.ScreenOutConfig.Types.ScreenMode) }, null, null),
            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Assistant.Embedded.V1Alpha2.DialogStateIn), global::Google.Assistant.Embedded.V1Alpha2.DialogStateIn.Parser, new[]{ "ConversationState", "LanguageCode", "DeviceLocation", "IsNewConversation" }, null, null, null, null),
            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Assistant.Embedded.V1Alpha2.DeviceConfig), global::Google.Assistant.Embedded.V1Alpha2.DeviceConfig.Parser, new[]{ "DeviceId", "DeviceModelId" }, null, null, null, null),
            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Assistant.Embedded.V1Alpha2.AudioOut), global::Google.Assistant.Embedded.V1Alpha2.AudioOut.Parser, new[]{ "AudioData" }, null, null, null, null),
            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Assistant.Embedded.V1Alpha2.ScreenOut), global::Google.Assistant.Embedded.V1Alpha2.ScreenOut.Parser, new[]{ "Format", "Data" }, null, new[]{ typeof(global::Google.Assistant.Embedded.V1Alpha2.ScreenOut.Types.Format) }, null, null),
            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Assistant.Embedded.V1Alpha2.DeviceAction), global::Google.Assistant.Embedded.V1Alpha2.DeviceAction.Parser, new[]{ "DeviceRequestJson" }, null, null, null, null),
            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Assistant.Embedded.V1Alpha2.SpeechRecognitionResult), global::Google.Assistant.Embedded.V1Alpha2.SpeechRecognitionResult.Parser, new[]{ "Transcript", "Stability" }, null, null, null, null),
            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Assistant.Embedded.V1Alpha2.DialogStateOut), global::Google.Assistant.Embedded.V1Alpha2.DialogStateOut.Parser, new[]{ "SupplementalDisplayText", "ConversationState", "MicrophoneMode", "VolumePercentage" }, null, new[]{ typeof(global::Google.Assistant.Embedded.V1Alpha2.DialogStateOut.Types.MicrophoneMode) }, null, null),
            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Assistant.Embedded.V1Alpha2.DebugConfig), global::Google.Assistant.Embedded.V1Alpha2.DebugConfig.Parser, new[]{ "ReturnDebugInfo" }, null, null, null, null),
            new pbr::GeneratedClrTypeInfo(typeof(global::Google.Assistant.Embedded.V1Alpha2.DeviceLocation), global::Google.Assistant.Embedded.V1Alpha2.DeviceLocation.Parser, new[]{ "Coordinates" }, new[]{ "Type" }, null, null, null)
          }));
    }

EmbeddedAssistant.g.cs第101到116行的編譯輸出出現編譯器錯誤

和Type上的Google.Protobuf ReflectionUtil.cs上的編譯器錯誤是名稱空間，但使用起來就像類型。

 internal static readonly Type[] EmptyTypes = new Type[0];

        /// <summary>
        /// Creates a delegate which will cast the argument to the type that declares the method,
        /// call the method on it, then convert the result to object.
        /// </summary>
        /// <param name="method">The method to create a delegate for, which must be declared in an IMessage
        /// implementation.</param>
        internal static Func<IMessage, object> CreateFuncIMessageObject(MethodInfo method) =>
            GetReflectionHelper(method.DeclaringType, method.ReturnType).CreateFuncIMessageObject(method);

C＃項目結構。 Google文件夾/ API，/ Assistant和/ Type下的文件是由Protoc 3.9.0編譯器生成的

錯誤看起來像這樣

Answer 1

問題解決了

我使用了這個鏈接https://github.com/grpc/grpc/blob/master/src/csharp/BUILD-INTEGRATION.md

基本上從googleapis添加了最低限度的.proto文件，以使Google助手正常工作。 附圖片

項目外觀的屏幕截圖

然后添加了Grpc，Grpc.Tools nuget包，並按照上述文章中的說明更改.csproj並進行了構建。

我剛剛在我的csproj中添加了以下內容

<Protobuf Include="**/*.proto" OutputDir="%(RelativePath)"/>

它生成了如圖所示的輸出

構建失敗，但是生成了CS文件。 獲取生成的CS文件，將它們添加到您的真實項目中，然后添加Google.Protobuf nuget包 ，然后構建即可。