com.aliyun.oss.OSSException Java Examples

/**
 * Upload string.
 *
 * @param ossClient the ossClient client
 * @param instream  the instream
 * @param fileName  the file name
 * @return the string
 */
public String upload(@NotNull OSS ossClient,
                     @NotNull InputStream instream,
                     @NotNull String fileName) {
    try {
        // 创建上传 Object 的 Metadata
        ObjectMetadata objectMetadata = new ObjectMetadata();
        objectMetadata.setContentLength(instream.available());
        objectMetadata.setCacheControl("no-cache");
        objectMetadata.setHeader("Pragma", "no-cache");
        objectMetadata.setContentType(ImageUtils.getImageType(fileName));
        objectMetadata.setContentDisposition("inline;filename=" + fileName);
        ossClient.putObject(bucketName, filedir + fileName, instream, objectMetadata);
        return getUrl(ossClient, filedir, fileName);
    } catch (IOException | OSSException | ClientException e) {
        log.trace("", e);
    }
    return "";
}
 

/**
 * 获取文件的临时地址（供文件预览使用）
 * 图片处理：https://help.aliyun.com/document_detail/47505.html
 * 异常码描：https://help.aliyun.com/document_detail/32023.html
 * @param bucket   必传：存储空间名称
 * @param endpoint 必传：存储空间所属地域的访问域名
 * @param isImg    必传：获取的文件是否为图片
 * @param process  选传：（isImg=true时必传）图片的x-oss-process参数值（传空则返回原图），举例：image/resize,p_50表示将图按比例缩略到原来的1/2
 * @param timeout  必传：有效时长，单位：分钟
 * @return 返回文件的完整地址（浏览器可直接访问）
 * Comment by 玄玉<https://jadyer.cn/> on 2018/4/9 17:23.
 */
public static String getFileURL(String endpoint, String accessKeyId, String accessKeySecret, String bucket, String key, boolean isImg, String process, int timeout) {
    LogUtil.getLogger().info("获取文件临时URL，请求ossKey=[{}]，process=[{}], timeout=[{}]min", key, process, timeout);
    OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
    try {
        GeneratePresignedUrlRequest req = new GeneratePresignedUrlRequest(bucket, key, HttpMethod.GET);
        req.setExpiration(DateUtils.addMinutes(new Date(), timeout));
        if(isImg){
            req.setProcess(StringUtils.isNotBlank(process) ? process : "image/resize,p_100");
        }
        String imgURL = ossClient.generatePresignedUrl(req).toString();
        imgURL = imgURL.startsWith("http://") ? imgURL.replace("http://", "https://") : imgURL;
        LogUtil.getLogger().info("获取文件临时URL，请求ossKey=[{}]，应答fileUrl=[{}]", key, imgURL);
        return imgURL;
    } catch (OSSException oe) {
        throw new SeedException("获取文件临时URL，OSS服务端异常，RequestID="+oe.getRequestId() + "，HostID="+oe.getHostId() + "，Code="+oe.getErrorCode() + "，Message="+oe.getMessage());
    } catch (ClientException ce) {
        throw new SeedException("获取文件临时URL，OSS客户端异常，RequestID="+ce.getRequestId() + "，Code="+ce.getErrorCode() + "，Message="+ce.getMessage());
    } catch (Throwable e) {
        throw new SeedException("获取文件临时URL，OSS未知异常：" + e.getMessage());
    } finally {
        if(null != ossClient){
            ossClient.shutdown();
        }
    }
}
 

/**
 * 文件上传
 * @param bucket   存储空间名称
 * @param endpoint 存储空间所属地域的访问域名
 * @param key      文件完整名称（建议含后缀）
 * @param is       文件流
 * Comment by 玄玉<https://jadyer.cn/> on 2018/4/9 17:24.
 */
public static void upload(String bucket, String endpoint, String key, String accessKeyId, String accessKeySecret, InputStream is) {
    OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
    try {
        ossClient.putObject(bucket, key, is);
    } catch (OSSException oe) {
        throw new SeedException("文件上传，OSS服务端异常，RequestID="+oe.getRequestId() + "，HostID="+oe.getHostId() + "，Code="+oe.getErrorCode() + "，Message="+oe.getMessage());
    } catch (ClientException ce) {
        throw new SeedException("文件上传，OSS客户端异常，RequestID="+ce.getRequestId() + "，Code="+ce.getErrorCode() + "，Message="+ce.getMessage());
    } catch (Throwable e) {
        throw new SeedException("文件上传，OSS未知异常：" + e.getMessage());
    } finally {
        try {
            if(null != is){
                is.close();
            }
        } catch (final IOException ioe) {
            // ignore
        }
        if(null != ossClient){
            ossClient.shutdown();
        }
    }
}
 

@Test
public void test() throws OSSException, ClientException, IOException {
    OSSClient client = new OSSClient("oss-cn-hangzhou.aliyuncs.com", "", "", "");
    // BucketInfo info = client.getBucketInfo("edrmry");
    boolean exists = client.doesBucketExist("edrmry");
    System.out.println(exists);
    // System.out.println(client.listBuckets().size());
    // client.createBucket("dzh1");
    PutObjectResult r = client.putObject("edrmry", "dzh1.jpg", new FileInputStream("/Users/dzh/Pictures/8.pic.jpg"));
    System.out.println(r.getETag());
    OSSObject o = client.getObject("edrmry", "dzh1");
    InputStream is = o.getObjectContent();

    FileOutputStream fos = new FileOutputStream("/Users/dzh/Pictures/8.pic.2.jpg");
    int len = 0;
    byte[] buf = new byte[32];
    while ((len = is.read(buf)) != -1) {
        fos.write(buf, 0, len);
    }
    fos.flush();
    fos.close();
}
 

@Test
public void testUpload() {
    // 创建一个访问 OSS 的实例
    OSS client = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

    try {
        // 文件上传
        System.out.println("Uploading a new object to OSS from an input stream\n");
        String content = "Thank you for using Aliyun Object Storage Service";
        client.putObject(bucketName, key, new ByteArrayInputStream(content.getBytes()));

        System.out.println("Uploading a new object to OSS from a file\n");
        client.putObject(new PutObjectRequest(bucketName, key, createSampleFile()));

        // 文件下载
        System.out.println("Downloading an object");
        OSSObject object = client.getObject(new GetObjectRequest(bucketName, key));
        System.out.println("Content-Type: " + object.getObjectMetadata().getContentType());
        displayTextInputStream(object.getObjectContent());
    } catch (OSSException oe) {
        System.out.println("Caught an OSSException, which means your request made it to OSS, "
                + "but was rejected with an error response for some reason.");
        System.out.println("Error Message: " + oe.getErrorCode());
        System.out.println("Error Code:       " + oe.getErrorCode());
        System.out.println("Request ID:      " + oe.getRequestId());
        System.out.println("Host ID:           " + oe.getHostId());
    } catch (ClientException ce) {
        System.out.println("Caught an ClientException, which means the client encountered "
                + "a serious internal problem while trying to communicate with OSS, "
                + "such as not being able to access the network.");
        System.out.println("Error Message: " + ce.getMessage());
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        client.shutdown();
    }
}
 

public static void main(String[] args) throws IOException {
	OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

	try {
		UploadFileRequest uploadFileRequest = new UploadFileRequest(bucketName, key);
		// The local file to upload---it must exist.
		uploadFileRequest.setUploadFile(uploadFile);
		// Sets the concurrent upload task number to 5.
		uploadFileRequest.setTaskNum(5);
		// Sets the part size to 1MB.
		uploadFileRequest.setPartSize(1024 * 1024 * 1);
		// Enables the checkpoint file. By default it's off.
		uploadFileRequest.setEnableCheckpoint(true);

		UploadFileResult uploadResult = ossClient.uploadFile(uploadFileRequest);

		CompleteMultipartUploadResult multipartUploadResult = uploadResult.getMultipartUploadResult();
		System.out.println(multipartUploadResult.getETag());

	} catch (OSSException oe) {
		System.out.println("Caught an OSSException, which means your request made it to OSS, "
				+ "but was rejected with an error response for some reason.");
		System.out.println("Error Message: " + oe.getErrorMessage());
		System.out.println("Error Code:       " + oe.getErrorCode());
		System.out.println("Request ID:      " + oe.getRequestId());
		System.out.println("Host ID:           " + oe.getHostId());
	} catch (ClientException ce) {
		System.out.println("Caught an ClientException, which means the client encountered "
				+ "a serious internal problem while trying to communicate with OSS, "
				+ "such as not being able to access the network.");
		System.out.println("Error Message: " + ce.getMessage());
	} catch (Throwable e) {
		e.printStackTrace();
	} finally {
		ossClient.shutdown();
	}
}
 

public static void main(String[] args) throws IOException {

		OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

		try {
			DownloadFileRequest downloadFileRequest = new DownloadFileRequest(bucketName, key);
			// Sets the local file to download to
			downloadFileRequest.setDownloadFile(downloadFile);
			// Sets the concurrent task thread count 5. By default it's 1.
			downloadFileRequest.setTaskNum(5);
			// Sets the part size, by default it's 100K.
			downloadFileRequest.setPartSize(1024 * 1024 * 1);
			// Enable checkpoint. By default it's false.
			downloadFileRequest.setEnableCheckpoint(true);

			DownloadFileResult downloadResult = ossClient.downloadFile(downloadFileRequest);

			ObjectMetadata objectMetadata = downloadResult.getObjectMetadata();
			System.out.println(objectMetadata.getETag());
			System.out.println(objectMetadata.getLastModified());
			System.out.println(objectMetadata.getUserMetadata().get("meta"));

		} catch (OSSException oe) {
			System.out.println("Caught an OSSException, which means your request made it to OSS, "
					+ "but was rejected with an error response for some reason.");
			System.out.println("Error Message: " + oe.getErrorMessage());
			System.out.println("Error Code:       " + oe.getErrorCode());
			System.out.println("Request ID:      " + oe.getRequestId());
			System.out.println("Host ID:           " + oe.getHostId());
		} catch (ClientException ce) {
			System.out.println("Caught an ClientException, which means the client encountered "
					+ "a serious internal problem while trying to communicate with OSS, "
					+ "such as not being able to access the network.");
			System.out.println("Error Message: " + ce.getMessage());
		} catch (Throwable e) {
			e.printStackTrace();
		} finally {
			ossClient.shutdown();
		}
	}
 

/**
 * 文件下载
 * @param bucket   存储空间名称
 * @param endpoint 存储空间所属地域的访问域名
 * @param localURL 保存在本地的包含完整路径和后缀的完整文件名，若传空则默认放到Java临时目录中
 * @return localURL（若文件不存在则返回OSSUtil.NO_FILE）
 * Comment by 玄玉<https://jadyer.cn/> on 2018/4/9 17:24.
 */
public static String download(String bucket, String endpoint, String key, String accessKeyId, String accessKeySecret, String localURL) {
    if(StringUtils.isBlank(localURL)){
        //若未传localURL，则把下载到的文件放到Java临时目录
        localURL = System.getProperty("java.io.tmpdir") + "/ossutil-download/" + key;
        ////若文件名称不含后缀，那就主动添加后缀
        //if("".equals(FilenameUtils.getExtension(key))){
        //    localURL += ".txt";
        //}
    }
    OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
    try {
        if(!ossClient.doesObjectExist(bucket, key)){
            return OSSUtil.NO_FILE;
        }
        //ossClient.getObject(new GetObjectRequest(bucket, key), new File(localURL));
        InputStream is = ossClient.getObject(bucket, key).getObjectContent();
        FileUtils.copyInputStreamToFile(is, new File(localURL));
        return localURL;
    } catch (OSSException oe) {
        throw new SeedException("文件下载，OSS服务端异常，RequestID="+oe.getRequestId() + "，HostID="+oe.getHostId() + "，Code="+oe.getErrorCode() + "，Message="+oe.getMessage());
    } catch (ClientException ce) {
        throw new SeedException("文件下载，OSS客户端异常，RequestID="+ce.getRequestId() + "，Code="+ce.getErrorCode() + "，Message="+ce.getMessage());
    } catch (Throwable e) {
        throw new SeedException("文件下载，OSS未知异常：" + e.getMessage());
    } finally {
        if(null != ossClient){
            ossClient.shutdown();
        }
    }
}
 

/**
 * 上传图片到阿里云OSS
 *
 * @param request
 * @param response
 * @param file
 * @return
 * @throws IOException
 */
@RequestMapping(value = "upload/oss/image", method = RequestMethod.POST)
@ResponseBody
public MessageResult uploadOssImage(HttpServletRequest request, HttpServletResponse response,
                                    @RequestParam("file") MultipartFile file) throws IOException {
    log.info(request.getSession().getServletContext().getResource("/").toString());
    response.setCharacterEncoding("UTF-8");
    response.setContentType("text/html; charset=UTF-8");
    Assert.isTrue(ServletFileUpload.isMultipartContent(request), sourceService.getMessage("FORM_FORMAT_ERROR"));
    Assert.isTrue(file != null, sourceService.getMessage("NOT_FIND_FILE"));
    log.info("该文件的文件流为转为类型>>>>>>>>>>>"+UploadFileUtil.getFileHeader(file.getInputStream()));
    String fileType=UploadFileUtil.getFileType(file.getInputStream());
    System.out.println("fileType="+fileType);
    String directory = new SimpleDateFormat("yyyy/MM/dd/").format(new Date());
    OSSClient ossClient = new OSSClient(aliyunConfig.getOssEndpoint(), aliyunConfig.getAccessKeyId(), aliyunConfig.getAccessKeySecret());
    try {
        String fileName = file.getOriginalFilename();
        String suffix = fileName.substring(fileName.lastIndexOf("."), fileName.length());
        System.out.println("suffix="+suffix);
        if (!allowedFormat.contains(suffix.trim().toLowerCase())) {
            return MessageResult.error(sourceService.getMessage("FORMAT_NOT_SUPPORT"));
        }
        if(fileType==null||!allowedFormat.contains(fileType.trim().toLowerCase())){
            return MessageResult.error(sourceService.getMessage("FORMAT_NOT_SUPPORT"));
        }
        String key = directory + GeneratorUtil.getUUID() + suffix;
        System.out.println(key);
        //压缩文件
        String path = request.getSession().getServletContext().getRealPath("/") + "upload/"+file.getOriginalFilename();
        File tempFile=new File(path);
        FileUtils.copyInputStreamToFile(file.getInputStream(), tempFile);
        log.info("=================压缩前"+tempFile.length());
        UploadFileUtil.zipWidthHeightImageFile(tempFile,tempFile,425,638,0.7f);
        log.info("=================压缩后"+tempFile.length());
        ossClient.putObject(aliyunConfig.getOssBucketName(), key, file.getInputStream());
        String uri = aliyunConfig.toUrl(key);
        log.info(">>>>>>>>>>上传成功>>>>>>>>>>>>>");
        MessageResult mr = new MessageResult(0, sourceService.getMessage("UPLOAD_SUCCESS"));
        mr.setData(uri);
        return mr;
    } catch (OSSException oe) {
        return MessageResult.error(500, oe.getErrorMessage());
    } catch (ClientException ce) {
        System.out.println("Error Message: " + ce.getMessage());
        return MessageResult.error(500, ce.getErrorMessage());
    } catch (Throwable e) {
        e.printStackTrace();
        return MessageResult.error(500, sourceService.getMessage("SYSTEM_ERROR"));
    } finally {
        ossClient.shutdown();
    }
}
 

@RequestMapping(value = "/oss/image", method = RequestMethod.POST)
@ResponseBody
@AccessLog(module = AdminModule.COMMON, operation = "上传oss图片")
public String uploadOssImage(
        HttpServletRequest request,
        HttpServletResponse response,
        @RequestParam("file") MultipartFile file) throws IOException {
    log.info(request.getSession().getServletContext().getResource("/"));
    response.setCharacterEncoding("UTF-8");
    response.setContentType("text/html; charset=UTF-8");
    if (!ServletFileUpload.isMultipartContent(request)) {
        return MessageResult.error(500, sourceService.getMessage("FORMAT_NOT_SUPPORTED")).toString();
    }
    if (file == null) {
        return MessageResult.error(500, sourceService.getMessage("FILE_NOT_FOUND")).toString();
    }

    String directory = new SimpleDateFormat("yyyy/MM/dd/").format(new Date());

    OSSClient ossClient = new OSSClient(aliyunConfig.getOssEndpoint(), aliyunConfig.getAccessKeyId(), aliyunConfig.getAccessKeySecret());
    try {
        String fileName = file.getOriginalFilename();
        String suffix = fileName.substring(fileName.lastIndexOf("."), fileName.length());
        String key = directory + GeneratorUtil.getUUID() + suffix;
        System.out.println(key);
        ossClient.putObject(aliyunConfig.getOssBucketName(), key, file.getInputStream());
        String uri = aliyunConfig.toUrl(key);
        MessageResult mr = new MessageResult(0, sourceService.getMessage("SUCCESS"));
        mr.setData(uri);
        return mr.toString();
    } catch (OSSException oe) {
        return MessageResult.error(500, oe.getErrorMessage()).toString();
    } catch (ClientException ce) {
        System.out.println("Error Message: " + ce.getMessage());
        return MessageResult.error(500, ce.getErrorMessage()).toString();
    } catch (Throwable e) {
        e.printStackTrace();
        return MessageResult.error(500, sourceService.getMessage("REQUEST_FAILED")).toString();
    } finally {
        ossClient.shutdown();
    }
}
 

/**
 * 上传图片到阿里云OSS
 *
 * @param request
 * @param response
 * @param file
 * @return
 * @throws IOException
 */
@RequestMapping(value = "upload/oss/image", method = RequestMethod.POST)
@ResponseBody
public MessageResult uploadOssImage(HttpServletRequest request, HttpServletResponse response,
                                    @RequestParam("file") MultipartFile file) throws IOException {
    log.info(request.getSession().getServletContext().getResource("/").toString());
    response.setCharacterEncoding("UTF-8");
    response.setContentType("text/html; charset=UTF-8");
    Assert.isTrue(ServletFileUpload.isMultipartContent(request), sourceService.getMessage("FORM_FORMAT_ERROR"));
    Assert.isTrue(file != null, sourceService.getMessage("NOT_FIND_FILE"));
    log.info("该文件的文件流为转为类型>>>>>>>>>>>"+UploadFileUtil.getFileHeader(file.getInputStream()));
    String fileType=UploadFileUtil.getFileType(file.getInputStream());
    System.out.println("fileType="+fileType);
    String directory = new SimpleDateFormat("yyyy/MM/dd/").format(new Date());
    OSSClient ossClient = new OSSClient(aliyunConfig.getOssEndpoint(), aliyunConfig.getAccessKeyId(), aliyunConfig.getAccessKeySecret());
    try {
        String fileName = file.getOriginalFilename();
        String suffix = fileName.substring(fileName.lastIndexOf("."), fileName.length());
        System.out.println("suffix="+suffix);
        if (!allowedFormat.contains(suffix.trim().toLowerCase())) {
            return MessageResult.error(sourceService.getMessage("FORMAT_NOT_SUPPORT"));
        }
        if(fileType==null||!allowedFormat.contains(fileType.trim().toLowerCase())){
            return MessageResult.error(sourceService.getMessage("FORMAT_NOT_SUPPORT"));
        }
        String key = directory + GeneratorUtil.getUUID() + suffix;
        System.out.println(key);
        //压缩文件
        String path = request.getSession().getServletContext().getRealPath("/") + "upload/"+file.getOriginalFilename();
        File tempFile=new File(path);
        FileUtils.copyInputStreamToFile(file.getInputStream(), tempFile);
        log.info("=================压缩前"+tempFile.length());
        UploadFileUtil.zipWidthHeightImageFile(tempFile,tempFile,425,638,0.7f);
        log.info("=================压缩后"+tempFile.length());
        ossClient.putObject(aliyunConfig.getOssBucketName(), key, file.getInputStream());
        String uri = aliyunConfig.toUrl(key);
        log.info(">>>>>>>>>>上传成功>>>>>>>>>>>>>");
        MessageResult mr = new MessageResult(0, sourceService.getMessage("UPLOAD_SUCCESS"));
        mr.setData(uri);
        return mr;
    } catch (OSSException oe) {
        return MessageResult.error(500, oe.getErrorMessage());
    } catch (ClientException ce) {
        System.out.println("Error Message: " + ce.getMessage());
        return MessageResult.error(500, ce.getErrorMessage());
    } catch (Throwable e) {
        e.printStackTrace();
        return MessageResult.error(500, sourceService.getMessage("SYSTEM_ERROR"));
    } finally {
        ossClient.shutdown();
    }
}
 

@RequestMapping(value = "/oss/image", method = RequestMethod.POST)
@ResponseBody
@AccessLog(module = AdminModule.COMMON, operation = "上传oss图片")
public String uploadOssImage(
        HttpServletRequest request,
        HttpServletResponse response,
        @RequestParam("file") MultipartFile file) throws IOException {
    log.info(request.getSession().getServletContext().getResource("/"));
    response.setCharacterEncoding("UTF-8");
    response.setContentType("text/html; charset=UTF-8");
    if (!ServletFileUpload.isMultipartContent(request)) {
        return MessageResult.error(500, sourceService.getMessage("FORMAT_NOT_SUPPORTED")).toString();
    }
    if (file == null) {
        return MessageResult.error(500, sourceService.getMessage("FILE_NOT_FOUND")).toString();
    }

    String directory = new SimpleDateFormat("yyyy/MM/dd/").format(new Date());

    OSSClient ossClient = new OSSClient(aliyunConfig.getOssEndpoint(), aliyunConfig.getAccessKeyId(), aliyunConfig.getAccessKeySecret());
    try {
        String fileName = file.getOriginalFilename();
        String suffix = fileName.substring(fileName.lastIndexOf("."), fileName.length());
        String key = directory + GeneratorUtil.getUUID() + suffix;
        System.out.println(key);
        ossClient.putObject(aliyunConfig.getOssBucketName(), key, file.getInputStream());
        String uri = aliyunConfig.toUrl(key);
        MessageResult mr = new MessageResult(0, sourceService.getMessage("SUCCESS"));
        mr.setData(uri);
        return mr.toString();
    } catch (OSSException oe) {
        return MessageResult.error(500, oe.getErrorMessage()).toString();
    } catch (ClientException ce) {
        System.out.println("Error Message: " + ce.getMessage());
        return MessageResult.error(500, ce.getErrorMessage()).toString();
    } catch (Throwable e) {
        e.printStackTrace();
        return MessageResult.error(500, sourceService.getMessage("REQUEST_FAILED")).toString();
    } finally {
        ossClient.shutdown();
    }
}
 

public static void main(String[] args) throws IOException {
	/*
	 * Constructs a client instance with your account for accessing OSS
	 */
	client = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

	try {
		/*
		 * Upload an object to your bucket
		 */
		System.out.println("Uploading a new object to OSS from a file\n");
		client.putObject(new PutObjectRequest(bucketName, key, createSampleFile()));

		/*
		 * Get size of the object and pre-create a random access file to
		 * hold object data
		 */
		ObjectMetadata metadata = client.getObjectMetadata(bucketName, key);
		long objectSize = metadata.getContentLength();
		RandomAccessFile raf = new RandomAccessFile(localFilePath, "rw");
		raf.setLength(objectSize);
		raf.close();

		/*
		 * Calculate how many blocks to be divided
		 */
		final long blockSize = 1 * 1024 * 1024L; // 1MB
		int blockCount = (int) (objectSize / blockSize);
		if (objectSize % blockSize != 0) {
			blockCount++;
		}
		System.out.println("Total blocks count " + blockCount + "\n");

		/*
		 * Download the object concurrently
		 */
		System.out.println("Start to download " + key + "\n");
		for (int i = 0; i < blockCount; i++) {
			long startPos = i * blockSize;
			long endPos = (i + 1 == blockCount) ? objectSize : (i + 1) * blockSize;
			executorService.execute(new BlockFetcher(startPos, endPos, i + 1));
		}

		/*
		 * Waiting for all blocks finished
		 */
		executorService.shutdown();
		while (!executorService.isTerminated()) {
			try {
				executorService.awaitTermination(5, TimeUnit.SECONDS);
			} catch (InterruptedException e) {
				e.printStackTrace();
			}
		}

		/*
		 * Verify whether all blocks are finished
		 */
		if (completedBlocks.intValue() != blockCount) {
			throw new IllegalStateException("Download fails due to some blocks are not finished yet");
		} else {
			System.out.println("Succeed to download object " + key);
		}

	} catch (OSSException oe) {
		System.out.println("Caught an OSSException, which means your request made it to OSS, "
				+ "but was rejected with an error response for some reason.");
		System.out.println("Error Message: " + oe.getErrorMessage());
		System.out.println("Error Code:       " + oe.getErrorCode());
		System.out.println("Request ID:      " + oe.getRequestId());
		System.out.println("Host ID:           " + oe.getHostId());
	} catch (ClientException ce) {
		System.out.println("Caught an ClientException, which means the client encountered "
				+ "a serious internal problem while trying to communicate with OSS, "
				+ "such as not being able to access the network.");
		System.out.println("Error Message: " + ce.getMessage());
	} finally {
		/*
		 * Do not forget to shut down the client finally to release all
		 * allocated resources.
		 */
		if (client != null) {
			client.shutdown();
		}
	}
}
 

public static void main(String[] args) throws IOException {
	/*
	 * Constructs a client instance with your account for accessing OSS
	 */
	OSS client = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

	try {

		/**
		 * Note that there are two ways of uploading an object to your
		 * bucket, the one by specifying an input stream as content source,
		 * the other by specifying a file.
		 */

		/*
		 * Upload an object to your bucket from an input stream
		 */
		System.out.println("Uploading a new object to OSS from an input stream\n");
		String content = "Thank you for using Aliyun Object Storage Service";
		client.putObject(bucketName, key, new ByteArrayInputStream(content.getBytes()));

		/*
		 * Upload an object to your bucket from a file
		 */
		System.out.println("Uploading a new object to OSS from a file\n");
		client.putObject(new PutObjectRequest(bucketName, key, createSampleFile()));

		/*
		 * Download an object from your bucket
		 */
		System.out.println("Downloading an object");
		OSSObject object = client.getObject(new GetObjectRequest(bucketName, key));
		System.out.println("ObjectKey: " + object.getKey());
		System.out.println("ClientCRC: " + object.getClientCRC());
		System.out.println("ServerCRC: " + object.getServerCRC());
		System.out.println("Content-Type: " + object.getObjectMetadata().getContentType());
		displayTextInputStream(object.getObjectContent());

	} catch (OSSException oe) {
		System.out.println("Caught an OSSException, which means your request made it to OSS, "
				+ "but was rejected with an error response for some reason.");
		System.out.println("Error Message: " + oe.getErrorMessage());
		System.out.println("Error Code:       " + oe.getErrorCode());
		System.out.println("Request ID:      " + oe.getRequestId());
		System.out.println("Host ID:           " + oe.getHostId());
	} catch (ClientException ce) {
		System.out.println("Caught an ClientException, which means the client encountered "
				+ "a serious internal problem while trying to communicate with OSS, "
				+ "such as not being able to access the network.");
		System.out.println("Error Message: " + ce.getMessage());
	} finally {
		/*
		 * Do not forget to shut down the client finally to release all
		 * allocated resources.
		 */
		client.shutdown();
	}
}
 

public static void main(String[] args) throws IOException {
    /*
     * Constructs a client instance with your account for accessing OSS
     */
    OSSClient client = new OSSClient(endpoint, accessKeyId, accessKeySecret);
    
    try {
        
        /**
         * Note that there are two ways of uploading an object to your bucket, the one 
         * by specifying an input stream as content source, the other by specifying a file.
         */
        
        /*
         * Upload an object to your bucket from an input stream
         */
        System.out.println("Uploading a new object to OSS from an input stream\n");
        String content = "Thank you for using Aliyun Object Storage Service";
        client.putObject(bucketName, key, new ByteArrayInputStream(content.getBytes()));
        
        /*
         * Upload an object to your bucket from a file
         */
        System.out.println("Uploading a new object to OSS from a file\n");
        client.putObject(new PutObjectRequest(bucketName, key, createSampleFile()));
        
        /*
         * Download an object from your bucket
         */
        System.out.println("Downloading an object");
        OSSObject object = client.getObject(new GetObjectRequest(bucketName, key));
        System.out.println("Content-Type: "  + object.getObjectMetadata().getContentType());
        displayTextInputStream(object.getObjectContent());
        
    } catch (OSSException oe) {
        System.out.println("Caught an OSSException, which means your request made it to OSS, "
                + "but was rejected with an error response for some reason.");
        System.out.println("Error Message: " + oe.getErrorCode());
        System.out.println("Error Code:       " + oe.getErrorCode());
        System.out.println("Request ID:      " + oe.getRequestId());
        System.out.println("Host ID:           " + oe.getHostId());
    } catch (ClientException ce) {
        System.out.println("Caught an ClientException, which means the client encountered "
                + "a serious internal problem while trying to communicate with OSS, "
                + "such as not being able to access the network.");
        System.out.println("Error Message: " + ce.getMessage());
    } finally {
        /*
         * Do not forget to shut down the client finally to release all allocated resources.
         */
        client.shutdown();
    }
}