Examples with PersistableDownload com.qcloud.cos.transfer.PersistableDownload used on opensource projects

Example 1 with PersistableDownload

use of com.qcloud.cos.transfer.PersistableDownload in project cos-java-sdk-v5 by tencentyun.

the class TransferManagerDemo method pauseDownloadFileAndResume.

// 将文件下载到本地(中途暂停并继续开始)
public static void pauseDownloadFileAndResume() {
    // 1 初始化用户身份信息(secretId, secretKey)
    COSCredentials cred = new BasicCOSCredentials("AKIDXXXXXXXX", "1A2Z3YYYYYYYYYY");
    // 2 设置bucket的区域, COS地域的简称请参照 https://www.qcloud.com/document/product/436/6224
    ClientConfig clientConfig = new ClientConfig(new Region("ap-beijing-1"));
    // 3 生成cos客户端
    COSClient cosclient = new COSClient(cred, clientConfig);
    // bucket名需包含appid
    String bucketName = "mybucket-1251668577";
    ExecutorService threadPool = Executors.newFixedThreadPool(32);
    // 传入一个threadpool, 若不传入线程池, 默认TransferManager中会生成一个单线程的线程池。
    TransferManager transferManager = new TransferManager(cosclient, threadPool);
    String key = "aaa/bbb.txt";
    File downloadFile = new File("src/test/resources/download.txt");
    GetObjectRequest getObjectRequest = new GetObjectRequest(bucketName, key);
    try {
        // 返回一个异步结果copy, 可同步的调用waitForCompletion等待download结束, 成功返回void, 失败抛出异常.
        Download download = transferManager.download(getObjectRequest, downloadFile);
        Thread.sleep(5000L);
        PersistableDownload persistableDownload = download.pause();
        download = transferManager.resumeDownload(persistableDownload);
        showTransferProgress(download);
        download.waitForCompletion();
    } catch (CosServiceException e) {
        e.printStackTrace();
    } catch (CosClientException e) {
        e.printStackTrace();
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
    transferManager.shutdownNow();
    cosclient.shutdown();
}