添加项目文件。

FileService.Application/UploadFile/FileResponse.cs

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+using FileService.Domain;
+using FileService.Domain.ValueObjects;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FileService.Application.UploadFile
+{
+    public class FileResponse
+    {
+        public Guid Id { get; set; }
+        public Guid OwnerId { get; set; }
+        public FileName FileName { get; set; }
+        public long FileSize { get; set; }
+        public ContentType ContentType { get; set; }
+        public FileState State { get; set; }
+        public StorageLocation StorageLocation { get; set; }
+        public CheckSum CheckSum { get; set; }
+        public DateTimeOffset Created { get; set; }
+        public DateTimeOffset Updated { get; set;
+    }
+}

FileService.Application/UploadFile/UploadFileMapperConfig.cs

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+using AutoMapper;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FileService.Application.UploadFile
+{
+    public class UploadFileMapperConfig:Profile
+    {
+        public UploadFileMapperConfig()
+        {
+            CreateMap<Domain.Entities.UploadFile, FileResponse>()
+                .ForMember(dest => dest.Created, opt => opt.MapFrom(src => src.CreationTime))
+                .ForMember(dest => dest.Updated, opt => opt.MapFrom(src => src.ModificationTime))
+                ;
+        }
+    }
+}

FileService.Application/UploadFile/UploadFileService.cs

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+using AutoMapper;
+using FileService.Domain.IReposities;
+using IM.Commons;
+
+namespace FileService.Application.UploadFile
+{
+    public class UploadFileService
+    {
+        private readonly IUploadFileReposity reposity;
+        private readonly IMapper mapper;
+
+        public UploadFileService(IUploadFileReposity reposity, IMapper mapper)
+        {
+            this.reposity = reposity;
+            this.mapper = mapper;
+        }
+
+        public async Task<Result<FileResponse>> GetFileInfoAsync(Guid id)
+        {
+            var file = await reposity.FindByIdAsync(id);
+            if (file == null)
+            {
+                return Result.Fail<FileResponse>(ResultCode.FILE_NOT_FOUND);
+            }
+
+            return Result.Success(mapper.Map<FileResponse>(file));
+        }
+    }
+}