上傳七牛雲工具

import com.qiniu.storage.Region;
import org.springframework.web.multipart.MultipartFile;

import com.google.gson.Gson;
import com.qiniu.common.QiniuException;

import com.qiniu.http.Response;
import com.qiniu.storage.Configuration;
import com.qiniu.storage.UploadManager;
import com.qiniu.storage.model.DefaultPutRet;
import com.qiniu.util.Auth;

import java.io.*;


public class FileUtils {
    /**
     * Key
     */
    private static final String ACCESS_KEY = "Ak";

    /**
     * 祕鑰
     */
    private static final String SECRET_KEY = "Sk";

    /**
     * 存儲桶
     */
    private static final String BUCKET = "空間";


    private static final String BASE_URL = "http://url/";

    /**
     * 上傳管理
     */
    private static UploadManager uploadManager;

    private FileUtils() {
        //構造一個帶指定 Region 對象的配置類        注意地區華北華東等....
        Configuration config = new Configuration(Region.region1());
        uploadManager = new UploadManager(config);
    }

    private static UploadManager getInstance() {
        if (uploadManager == null) {
            new FileUtils();
        }
        return uploadManager;
    }


    /**
     * 生成上傳憑證Token
     *
     * @return
     */
    public static String getToken() {
        Auth auth = Auth.create(ACCESS_KEY, SECRET_KEY);
        String upToken = auth.uploadToken(BUCKET);
        System.out.println(upToken);
        return upToken;
    }

    public static String upLoad(MultipartFile file) {

        // 默認不指定key的情況下，以文件內容的hash值作爲文件名
        String key = null;
        String url="";
        try {
            InputStream inputStream = file.getInputStream();
//            byte[] byteData = IOUtils.toByteArray(inputStream);//把流轉字節數組
            Response response = getInstance().put(inputStream, key, getToken(), null, null);
//            Response response = getInstance().put(byteData, key, getToken());
            //解析上傳成功的結果
            try {
                DefaultPutRet putRet = new Gson().fromJson(response.bodyString(), DefaultPutRet.class);
                System.out.println(putRet.key);
                System.out.println(putRet.hash);
                url = BASE_URL+putRet.hash;
            } catch (QiniuException e) {
                Response r = e.response;
                System.err.println(r.toString());
                try {
                    System.err.println(r.bodyString());
                } catch (QiniuException ex2) {
                    //ignore
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return url;
    }





}

/** 多文件上傳，接收並返回某值
	public  Result fileS(HttpServletRequest request){
        List successUploadFiles=new ArrayList(); //返回上傳成功的文件名list給前端
        List<MultipartFile> files = ((MultipartHttpServletRequest) request).getFiles("file");  //創建一個list接受前端發送的文件
        List<String> list=new ArrayList<>();
        for (MultipartFile m:files) { //用foreach處理list列表中的file
            list.add(FileUtils.upLoad(m));
        }
        return Result.ok("filePath",list);//返回list
    }
/