Spring Boot File Upload Download
File Handling Services
Secure file upload/download with validation.
File Upload Controller
@PostMapping("/upload")
public ResponseEntity uploadFile(
@RequestParam("file") MultipartFile file,
@RequestParam("category") String category) {
if (!file.isEmpty() && file.getSize() < 10_000_000) {
String filename = storageService.store(file);
return ResponseEntity.ok(filename);
}
}Security Features
- File type validation
- Size limits (10MB)
- Antivirus scanning integration
- S3 direct upload