feat(shared): 优化本地文件服务实现

- 添加文件上传和删除方法的代码注释
- 使用 Hutool 的 DatePattern 优化日期格式化
- 修复文件路径分隔符问题，提高代码兼容性

src/main/java/com/youlai/boot/shared/file/service/impl/LocalFileService.java

@@ -1,5 +1,6 @@
 package com.youlai.boot.shared.file.service.impl;
 
+import cn.hutool.core.date.DatePattern;
 import cn.hutool.core.date.DateUtil;
 import cn.hutool.core.io.FileUtil;
 import cn.hutool.core.util.IdUtil;
@@ -7,6 +8,7 @@ import com.youlai.boot.shared.file.model.FileInfo;
 import com.youlai.boot.shared.file.service.FileService;
 import lombok.Data;
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.boot.context.properties.ConfigurationProperties;
@@ -23,40 +25,53 @@ import java.time.LocalDateTime;
  * @author Theo
  * @since 2024-12-09 17:11
  */
+@Data
+@Slf4j
 @Component
 @ConditionalOnProperty(value = "oss.type", havingValue = "local")
 @ConfigurationProperties(prefix = "oss.local")
 @RequiredArgsConstructor
-@Data
 public class LocalFileService implements FileService {
 
     @Value("${oss.local.storage-path}")
     private String storagePath;
 
+    /**
+     * 上传文件方法
+     *
+     * @param file 表单文件对象
+     * @return 文件信息
+     */
     @Override
     public FileInfo uploadFile(MultipartFile file) {
         // 生成文件名(日期文件夹)
         String suffix = FileUtil.getSuffix(file.getOriginalFilename());
         String uuid = IdUtil.simpleUUID();
-        String folder = DateUtil.format(LocalDateTime.now(), "yyyyMMdd") + File.separator;
-        String fileName =  uuid + "." + suffix;
+        String folder = DateUtil.format(LocalDateTime.now(), DatePattern.PURE_DATE_PATTERN);
+        String fileName = uuid + "." + suffix;
         String filePrefix = storagePath.endsWith(File.separator) ? storagePath : storagePath + File.separator;
         //  try-with-resource 语法糖自动释放流
         try (InputStream inputStream = file.getInputStream()) {
             // 上传文件
-            FileUtil.writeFromStream(inputStream, filePrefix +folder+ fileName);
+            FileUtil.writeFromStream(inputStream, filePrefix + folder + File.separator + fileName);
         } catch (Exception e) {
-            e.printStackTrace();
+            log.error("文件上传失败", e);
             throw new RuntimeException("文件上传失败");
         }
         // 获取文件访问路径，因为这里是本地存储，所以直接返回文件的相对路径，需要前端自行处理访问前缀
-        String fileUrl = File.separator +folder+File.separator + fileName;
+        String fileUrl = File.separator + folder + File.separator + fileName;
         FileInfo fileInfo = new FileInfo();
         fileInfo.setName(fileName);
         fileInfo.setUrl(fileUrl);
         return fileInfo;
     }
 
+
+    /**
+     * 删除文件
+     * @param filePath 文件完整URL
+     * @return 是否删除成功
+     */
     @Override
     public boolean deleteFile(String filePath) {
         //判断文件是否为空