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Yes.Application/Admins/Pages/GetPageQueryHandler.cs

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+namespace Yes.Application.Admins.Pages
+{
+
+    public record GetPageQuery(int Id) :  IRequest<GetPageQueryResponse>;
+
+    public record GetPageQueryResponse(
+        int Id,
+		string Title, 
+		int CategoryId,
+		string Content,
+        string Slug,
+        string CoverUrl,
+        string? Summary,
+        string[] Tags,
+        int Sort
+    );
+
+    public class GetPageQueryHandler(BlogDbContext db,IMapper mapper) : IRequestHandler<GetPageQuery, GetPageQueryResponse>
+    {
+        private readonly BlogDbContext _db = db;
+        private readonly IMapper _mapper = mapper;
+        public async Task<GetPageQueryResponse> Handle(GetPageQuery request, CancellationToken cancellationToken)
+        {
+			var page = await _db.Articles.FindAsync(request.Id);
+            if (page == null)
+            {
+                throw new PageNotExistsException(request.Id);
+            }
+
+            var response = _mapper.Map<GetPageQueryResponse>(page);
+
+            return response;
+        }
+    }
+
+    internal class CreatePageMappingProfile : IRegister
+    {
+        public void Register(TypeAdapterConfig config)
+        {
+            config.ForType<ArticleEntity, GetPageQueryResponse>()
+                .Map(dest => dest.Tags, src => src.Tag.ToTags()); ;
+        }
+    }
+
+
+}