feat: 新增文件缓存功能

- 在 Yi.Framework.Rbac.Application.Services.FileService 中注入 IMemoryCache，用于缓存文件元数据，减少对仓储的重复读取。
  - 在 Get 方法中通过 key "File:{code}" 缓存 FileCacheItem，设置绝对过期时间为 1 天。
  - 缓存项使用 Mapster 适配为 FileCacheItem，再适配回 FileAggregateRoot（保留现有逻辑判断和路径获取）。
- 新增缓存模型 Yi.Framework.Rbac.Domain.Shared.Caches.FileCacheItem（包含 Id、FileSize、FileName、FilePath、创建/修改信息等）。
- 增加并调整相关 using 引用（Microsoft.Extensions.Caching.Memory、Volo.Abp.Caching、Domain.Shared.Caches）。
- 同时修复了保存多文件时的缩进/空格格式（不影响功能）。

Yi.Abp.Net8/module/rbac/Yi.Framework.Rbac.Application/Services/FileService.cs

@@ -6,8 +6,10 @@ using System.Threading.Tasks;
 using Mapster;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Caching.Memory;
 using Volo.Abp;
 using Volo.Abp.Application.Services;
+using Volo.Abp.Caching;
 using Volo.Abp.Domain.Repositories;
 using Volo.Abp.Guids;
 using Yi.Framework.Core.Enums;
@@ -16,6 +18,7 @@ using Yi.Framework.Rbac.Application.Contracts.Dtos.FileManager;
 using Yi.Framework.Rbac.Application.Contracts.IServices;
 using Yi.Framework.Rbac.Domain.Entities;
 using Yi.Framework.Rbac.Domain.Managers;
+using Yi.Framework.Rbac.Domain.Shared.Caches;
 
 namespace Yi.Framework.Rbac.Application.Services
 {
@@ -23,11 +26,13 @@ namespace Yi.Framework.Rbac.Application.Services
     {
         private readonly IRepository<FileAggregateRoot> _repository;
         private readonly FileManager _fileManager;
+        private readonly IMemoryCache _memoryCache;
 
-        public FileService(IRepository<FileAggregateRoot> repository, FileManager fileManager)
+        public FileService(IRepository<FileAggregateRoot> repository, FileManager fileManager, IMemoryCache memoryCache)
         {
             _repository = repository;
             _fileManager = fileManager;
+            _memoryCache = memoryCache;
         }
 
         /// <summary>
@@ -37,7 +42,14 @@ namespace Yi.Framework.Rbac.Application.Services
         [Route("file/{code}/{isThumbnail?}")]
         public async Task<IActionResult> Get([FromRoute] Guid code, [FromRoute] bool? isThumbnail)
         {
-            var file = await _repository.GetAsync(x => x.Id == code);
+            var fileCache = await _memoryCache.GetOrCreateAsync($"File:{code}", async (options) =>
+            {
+                options.AbsoluteExpiration = DateTime.Now.AddDays(1);
+                var file = await _repository.GetAsync(x => x.Id == code);
+                if (file == null!) return null;
+                return file.Adapt<FileCacheItem>();
+            });
+            var file = fileCache?.Adapt<FileAggregateRoot>();
             var path = file?.GetQueryFileSavePath(isThumbnail);
             if (path is null || !File.Exists(path))
             {
@@ -58,12 +70,13 @@ namespace Yi.Framework.Rbac.Application.Services
 
             for (int i = 0; i < file.Count; i++)
             {
-               var entity= entities[i];
+                var entity = entities[i];
-               using (var steam = file[i].OpenReadStream())
+                using (var steam = file[i].OpenReadStream())
-               {
+                {
-                   await _fileManager.SaveFileAsync(entity,steam); 
+                    await _fileManager.SaveFileAsync(entity, steam);
-               }
+                }
             }
+
             return entities.Adapt<List<FileGetListOutputDto>>();
         }
     }

Yi.Abp.Net8/module/rbac/Yi.Framework.Rbac.Domain.Shared/Caches/FileCacheItem.cs

@@ -0,0 +1,29 @@
+namespace Yi.Framework.Rbac.Domain.Shared.Caches;
+
+public class FileCacheItem
+{
+    public Guid Id { get; set; }
+
+    /// <summary>
+    /// 文件大小 
+    ///</summary>
+    public decimal FileSize { get; set; }
+
+    /// <summary>
+    /// 文件名 
+    ///</summary>
+    public string FileName { get; set; }
+
+    /// <summary>
+    /// 文件路径 
+    ///</summary>
+    public string FilePath { get; set; }
+
+    public DateTime CreationTime { get; set; }
+
+    public Guid? CreatorId { get; set; }
+
+    public Guid? LastModifierId { get; set; }
+
+    public DateTime? LastModificationTime { get; set; }
+}