问题

我正在使用.NET 7 gRPC服务中的JSON编码转换。在proto文件中的某个元素正在使用Any元素：
```protobuf
google.protobuf.Any payload = 3 [(validate.rules) = {any:{required:true}}];

当我发送包含Any元素的请求时

请求摘要：

"inputPayload": {
  "@type": "type.googleapis.com/myRequestPayload",
  "foo": "bar"
}

它返回以下响应：

{
    "code": 3,
    "message": "Type registry has no descriptor for type name 'myRequestPayload'.",
    "details": []
}

我有另一个proto文件，其中定义了myRequestPayload。如何注册此类型，以便gRPC服务能够理解Any元素的内容？

<details>
<summary>英文:</summary>

I&#39;m using JSON transcoding in a .NET 7 gRPC service.
A certain element in the proto file is using the Any element:

google.protobuf.Any payload = 3 [(validate.rules) = {any:{required:true}}];

When I'm sending a request containing the Any element

Request exerpt:
```json
"inputPayload": {
  @type": "type.googleapis.com/myRequestPayload",
  "foo": "bar",
}

it gives this response:

{
    "code": 3,
    "message": "Type registry has no descriptor for type name 'myRequestPayload'.",
    "details": []
}

I do have another proto with the definition of myRequestPayload.
How can I register this type so that the gRPC service understands the contents of the Any element?

答案1

得分: 0

I'd expect you to set GrpcJsonTranscodingOptions.TypeRegistry to a type registry containing the relevant type, e.g.

var registry = TypeRegistry.FromFiles(MyProtoReflection.FileDescriptor);
services.AddGrpc().AddJsonTranscoding(options => options.TypeRegistry = registry);

Where MyProtoReflection is the name of the reflection class generated from the proto.

var registry = TypeRegistry.FromFiles(MyProtoReflection.FileDescriptor);
services.AddGrpc().AddJsonTranscoding(options => options.TypeRegistry = registry);