java OSS批量下載，並壓縮為ZIP

/**
     *  批量下載為zip
     * @param req
     * @param response
     * @param keyList  oss文件路徑集合
     * @param fileName 下載出來的zip文件名（一般以合同名命名） 如：測試合同,zip
     */
    public  static  void downForZip(HttpServletRequest req, HttpServletResponse response,
                                    List<String> keyList,String fileName ){
        // 創建臨時文件
        File zipFile = null;
        try {
　　　　　　　　//臨時文件名稱
            zipFile = File.createTempFile("test", ".zip");

            FileOutputStream f = new FileOutputStream(zipFile);
            /**
             * 作用是為任何OutputStream產生校驗和
             * 第一個參數是制定產生校驗和的輸出流，第二個參數是指定Checksum的類型 （Adler32（較快）和CRC32兩種）
             */
            CheckedOutputStream csum = new CheckedOutputStream(f, new Adler32());
            // 用於將數據壓縮成Zip文件格式
            ZipOutputStream zos = new ZipOutputStream(csum);
            OSSClient ossClient=  OSSUtil.getInstance();
            for (String ossFile : keyList) {
                // 獲取Object，返回結果為OSSObject對象

                OSSObject ossObject = ossClient.getObject(OSSUtil.BUCKET, ossFile);
                // 讀去Object內容  返回
                InputStream inputStream = ossObject.getObjectContent();
                // 對於每一個要被存放到壓縮包的文件，都必須調用ZipOutputStream對象的putNextEntry()方法，確保壓縮包里面文件不同名
                String name=ossFile.substring(ossFile.lastIndexOf("/")+1);
                zos.putNextEntry(new ZipEntry(name));
                int bytesRead = 0;
                // 向壓縮文件中輸出數據
                while ((bytesRead = inputStream.read()) != -1) {
                    zos.write(bytesRead);
                }
                inputStream.close();
                zos.closeEntry(); // 當前文件寫完，定位為寫入下一條項目
            }
            zos.close();
            String header = req.getHeader("User-Agent").toUpperCase();
            if (header.contains("MSIE") || header.contains("TRIDENT") || header.contains("EDGE")) {
                fileName = URLEncoder.encode(fileName, "utf-8");
                //IE下載文件名空格變+號問題
                fileName = fileName.replace("+", "%20");
            } else {
                fileName = new String(fileName.getBytes(), "ISO8859-1");
            }
            response.reset();
            response.setContentType("text/plain");
            response.setContentType("application/octet-stream; charset=utf-8");
            response.setHeader("Location", fileName);
            response.setHeader("Cache-Control", "max-age=0");
            response.setHeader("Content-Disposition", "attachment; filename=" + fileName);

            FileInputStream fis = new FileInputStream(zipFile);
            BufferedInputStream buff = new BufferedInputStream(fis);
            BufferedOutputStream out = new BufferedOutputStream(response.getOutputStream());
            byte[] car = new byte[1024];
            int l = 0;
            while (l < zipFile.length()) {
                int j = buff.read(car, 0, 1024);
                l += j;
                out.write(car, 0, j);
            }
            // 關閉流
            fis.close();
            buff.close();
            out.close();

            ossClient.shutdown();
            // 刪除臨時文件
            zipFile.delete();
        }  catch (IOException e1) {
            e1.printStackTrace();
        }catch (Exception e) {
            e.printStackTrace();
        }

    }