我是人，我提交了悬赏功能哦！悬赏功能是：1.人可以发布悬赏 2.人可以回复悬赏 3.只有回复人和悬赏发布者可以下载回复的附件
Change-Id: I269fb69c6ee4dd695a38fa0c91fa8fbe72fc5322
diff --git a/ruoyi-system/src/main/java/bounty/service/FileStorageService.java b/ruoyi-system/src/main/java/bounty/service/FileStorageService.java
new file mode 100644
index 0000000..9f12122
--- /dev/null
+++ b/ruoyi-system/src/main/java/bounty/service/FileStorageService.java
@@ -0,0 +1,55 @@
+package bounty.service;
+
+import org.springframework.stereotype.Service;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.UUID;
+
+@Service
+public class FileStorageService {
+ public String saveFile(MultipartFile file) {
+ try {
+ // 1. 校验文件名非空
+ String originalFilename = file.getOriginalFilename();
+ if (originalFilename == null || originalFilename.isEmpty()) {
+ throw new IllegalArgumentException("上传文件名不能为空");
+ }
+
+ // 2. 生成唯一文件名
+ String fileExtension = "";
+ int dotIndex = originalFilename.lastIndexOf(".");
+ if (dotIndex > 0) {
+ fileExtension = originalFilename.substring(dotIndex);
+ }
+ String newFilename = UUID.randomUUID() + fileExtension;
+
+ // 👇 新增：打印文件名生成结果（用于调试）
+ System.out.println("【生成文件名】" + newFilename);
+
+ // 3. 指定存储路径
+ Path uploadDir = Paths.get("uploads/");
+ if (!Files.exists(uploadDir)) {
+ Files.createDirectories(uploadDir);
+ }
+
+ // 👇 新增：打印完整路径（用于调试）
+ Path filePath = uploadDir.resolve(newFilename);
+ System.out.println("【文件保存路径】" + filePath.toAbsolutePath());
+
+ // 4. 写入文件
+ Files.write(filePath, file.getBytes());
+
+ // 5. 返回访问路径
+ return "/uploads/" + newFilename;
+ } catch (IOException e) {
+ // 👇 新增：记录异常信息
+ System.err.println("【文件上传失败】" + e.getMessage());
+ throw new RuntimeException("文件上传失败: " + e.getMessage(), e);
+ }
+ }
+}
+