RuoYi-Geek-SpringBoot3-文件上传模块

public class StorageService {
// 更多业务逻辑...
    /**
     * 上传文件（指定文件路径）
     *
     * @param filePath 指定上传文件的路径
     * @param file     上传的文件
     * @return 上传后的访问链接
     * @throws Exception 比如读写文件出错时
     *
     */
    public String upload(String filePath, MultipartFile file) throws Exception {
        FileUtils.assertAllowed(file, allowedExtension);
        if (file.getSize() > MAX_FILE_SIZE) {
            throw new IllegalArgumentException("文件过大");
        }
        if (this.fastUpload) {
            String md5 = Md5Utils.getMd5(file);
            String pathForMd5 = CacheUtils.get(CacheConstants.FILE_MD5_PATH_KEY, md5, String.class);
            if (StringUtils.isNotEmpty(pathForMd5)) {
                filePath = pathForMd5;
            } else {
                this.storageBucket.put(filePath, file);
                CacheUtils.put(CacheConstants.FILE_MD5_PATH_KEY, md5, filePath);
                CacheUtils.put(CacheConstants.FILE_PATH_MD5_KEY, filePath, md5);
            }
        } else {
            this.storageBucket.put(filePath, file);
        }
        return generateUrl(filePath);
    }

    // 更多业务逻辑...
}

// 上传操作
String url = FileOperateUtils.upload("images/logo.png", new File("logo.png"));

// 下载操作
FileOperateUtils.download("images/logo.png", response);

// 获取文件URL
String previewUrl = FileOperateUtils.getUrl("images/logo.png");

// 多服务初始化
StorageBucket ossBucket = StorageUtils.getStorageBucket("OSS", "default");
StorageService ossService = new StorageService(ossBucket);

// 业务操作
String ossUrl = ossService.upload("videos/demo.mp4", videoFile);

// 初始化分片上传
String uploadId = storageService.initMultipartUpload("large_file.zip", 1024*1024*100);

// 分片上传（10个分片）
List<String> etags = new ArrayList<>();
for (int i=1; i<=10; i++) {
    String etag = storageService.uploadPart("large_file.zip", uploadId, 
        i, 1024*1024, getPartStream(i));
    etags.add(etag);
}

// 完成分片上传
storageService.completeMultipartUpload("large_file.zip", uploadId, etags);