分享一個大牛的寫的 七牛文件上傳，下載文件方法

package io.j99.app.measure.storage;

import com.qiniu.common.QiniuException;
import com.qiniu.common.Zone;
import com.qiniu.http.Response;
import com.qiniu.storage.Configuration;
import com.qiniu.storage.UploadManager;
import com.qiniu.util.Auth;
import io.j99.app.measure.properties.storage.QiniuStorageProperties;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.io.Resource;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import java.io.*;
import java.nio.file.Path;
import java.util.UUID;
import java.util.stream.Stream;

@Service
public class QiniuStorageService implements StorageService {
    private final String qiniuSecret;
    private final String qiniuKey;
    private final String baseUrl;
    private Auth auth;
    private final String bucket;
    private Configuration configuration;

    @Autowired
    public QiniuStorageService(QiniuStorageProperties properties) {
        this.qiniuKey = properties.getKey();
        this.qiniuSecret = properties.getSecret();
        this.bucket = properties.getBucket();
        this.baseUrl = properties.getBaseUrl();
    }

    @Override
    public void init() {
        auth = Auth.create(qiniuKey, qiniuSecret);
        configuration = new Configuration(Zone.autoZone());

    }

    @Override
    public String store(MultipartFile file) {
        String filename = file.getOriginalFilename();
        return store(file, UUID.randomUUID().toString() + filename.substring(filename.lastIndexOf(".")));
    }

    public String getUploadToken() {
        String token = auth.uploadToken(bucket);
        return token;
    }

    @Override
    public String store(MultipartFile file, String saveName) {
        InputStream is = null;
        try {
            is = file.getInputStream();
            return this.store(is, saveName, file.getContentType());
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
//            if (is != null) {
//                try {
////                    is.close();
//                } catch (IOException e) {
//                    e.printStackTrace();
//                }
//            }
        }
        return null;
    }

    @Override
    public String store(InputStream in, String saveName, String contentType) {
        try {
            UploadManager uploadManager = new UploadManager(configuration);
            String token = getUploadToken();
            Response res = uploadManager.put(in, saveName, token, null, contentType);
            return saveName;
        } catch (QiniuException e) {
            Response r = e.response;
            // 請求失敗時打印的異常的信息
            System.out.println(r.toString());
            try {
                //響應的文本信息
                System.out.println(r.bodyString());
            } catch (QiniuException e1) {
                e1.printStackTrace();
            }
        }
        return null;
    }

    @Override
    public String store(File file, String contentType) throws IOException {
        return this.store(file, file.getName(), contentType);
    }

    @Override
    public String store(File file, String saveName, String contentType) throws IOException {
        FileInputStream fis = null;

        try {
            fis = new FileInputStream(file);
            return this.store(fis, saveName, contentType);
        } catch (FileNotFoundException e) {
            throw e;
        } finally {
            if (fis != null) {
                try {
                    fis.close();
                } catch (IOException e) {
                    throw e;
                }
            }
        }
    }

    @Override
    public Stream<Path> loadAll() {
        throw new RuntimeException();
    }

    @Override
    public Path load(String filename) {
        return null;
    }

    @SuppressWarnings("Duplicates")
    @Override
    public Resource loadAsResource(String filename) {
        return loadAsResource(filename, 0, 0);
    }

    @Override
    public Resource loadAsResource(String filename, int width, int height) {
        String url;
        if (width > 0 && height > 0) {
            url = auth.privateDownloadUrl(baseUrl + filename + "?imageMogr2/thumbnail/" + width + "x" + height, 600 * 30);
        } else {
            url = auth.privateDownloadUrl(baseUrl + filename, 600 * 30);
        }

        return new NetResource(url, filename);
    }

    @Override
    public void deleteAll() {
//        throw new RuntimeException();
    }
}

File dirFile = new File(newsaveurl);//刪除文件
if (dirFile.exists()&&dirFile.isFile()) {
    try {
         storageService.store(dirFile,newFileName, "application/x-jpg-compressed"); 
 storageService.store(dirFile,newFileName, "application/x-zip-compressed"); 
    } catch (IOException e) {
        e.printStackTrace();
        throw new StorageException("上傳失敗", e);
    }

}