Java CloudBlockBlob类代码示例

import com.microsoft.azure.storage.blob.CloudBlockBlob; //导入依赖的package包/类
/**
 * Upload image file to Azure storage with specified name.
 *
 * @param file     image file object
 * @param fileName specified file name
 * @return relative path of the created image blob
 */
public String uploadToAzureStorage(ApplicationContext applicationContext, MultipartFile file, String fileName) {
    String uri = null;

    try {
        CloudStorageAccount storageAccount =
                (CloudStorageAccount) applicationContext.getBean("cloudStorageAccount");
        CloudBlobClient blobClient = storageAccount.createCloudBlobClient();

        setupContainer(blobClient, this.thumbnailImageContainer);
        CloudBlobContainer originalImageContainer = setupContainer(blobClient, this.originalImageContainer);

        if (originalImageContainer != null) {
            CloudBlockBlob blob = originalImageContainer.getBlockBlobReference(fileName);
            blob.upload(file.getInputStream(), file.getSize());

            uri = blob.getUri().getPath();
        }
    } catch (Exception e) {
        e.printStackTrace();
        logger.error("Error uploading image: " + e.getMessage());
    }

    return uri;
}
 

import com.microsoft.azure.storage.blob.CloudBlockBlob; //导入依赖的package包/类
@Override
public void delete(String blobName) throws UnableToDeleteException, FileNotFoundException {
	log.debug(LOGGER_KEY + "-- Delete --" + _exchangeType);
	CloudBlockBlob deleteBlob = null;
	try {
		deleteBlob = this.mBlobContainer.getBlockBlobReference(blobName);
		if (this.config.getPostProcess().equalsIgnoreCase(PluginConstants.POST_PROCESS_DELETE)) {
			boolean status = deleteBlob.deleteIfExists();
			log.info(LOGGER_KEY + "Post processing Status (delete): " + status);
		} else {
			log.info(LOGGER_KEY + "Post processing skipped: " + this.config.getPostProcess());
		}
	} catch (URISyntaxException | StorageException e) {
		log.error(LOGGER_KEY + e.getMessage());
		throw new UnableToDeleteException("Unable to Delete Source Blob [" + blobName + "]" + e.getMessage(), e);
	}
}
 

import com.microsoft.azure.storage.blob.CloudBlockBlob; //导入依赖的package包/类
@Test
public void uploadPackageToAzureStorage() throws Exception {
    final MSDeployArtifactHandlerImpl handler = new MSDeployArtifactHandlerImpl(mojo);
    final CloudStorageAccount storageAccount = mock(CloudStorageAccount.class);
    final CloudBlobClient blobClient = mock(CloudBlobClient.class);
    doReturn(blobClient).when(storageAccount).createCloudBlobClient();
    final CloudBlobContainer blobContainer = mock(CloudBlobContainer.class);
    doReturn(blobContainer).when(blobClient).getContainerReference(anyString());
    doReturn(true).when(blobContainer)
            .createIfNotExists(any(BlobContainerPublicAccessType.class), isNull(), isNull());
    final CloudBlockBlob blob = mock(CloudBlockBlob.class);
    doReturn(blob).when(blobContainer).getBlockBlobReference(anyString());
    doNothing().when(blob).upload(any(FileInputStream.class), anyLong());
    doReturn(new URI("http://blob")).when(blob).getUri();
    final File file = new File("pom.xml");

    final String packageUri = handler.uploadPackageToAzureStorage(file, storageAccount, "blob");

    assertSame("http://blob", packageUri);
}
 

import com.microsoft.azure.storage.blob.CloudBlockBlob; //导入依赖的package包/类
@Test
public void testRetryOn304() throws StorageException, IOException, URISyntaxException {
    OperationContext operationContext = new OperationContext();
    operationContext.getRetryingEventHandler().addListener(new StorageEvent<RetryingEvent>() {
        @Override
        public void eventOccurred(RetryingEvent eventArg) {
            fail("Request should not be retried.");
        }
    });

    CloudBlobContainer container = BlobTestHelper.getRandomContainerReference();
    try {
        container.create();
        CloudBlockBlob blockBlobRef = (CloudBlockBlob) BlobTestHelper.uploadNewBlob(container, BlobType.BLOCK_BLOB,
                "originalBlob", 1024, null);
        AccessCondition accessCondition = AccessCondition.generateIfNoneMatchCondition(blockBlobRef.getProperties().getEtag());
        blockBlobRef.download(new ByteArrayOutputStream(), accessCondition, null, operationContext);
        
        fail("Download should fail with a 304.");
    } catch (StorageException ex) {
        assertEquals("The condition specified using HTTP conditional header(s) is not met.", ex.getMessage());
    } finally {
        container.deleteIfExists();
    }
}
 

import com.microsoft.azure.storage.blob.CloudBlockBlob; //导入依赖的package包/类
@Override
public Map<String, BlobMetaData> listBlobsByPrefix(String account, LocationMode mode, String container, String keyPath, String prefix) throws URISyntaxException, StorageException {
    // NOTE: this should be here: if (prefix == null) prefix = "";
    // however, this is really inefficient since deleteBlobsByPrefix enumerates everything and
    // then does a prefix match on the result; it should just call listBlobsByPrefix with the prefix!

    logger.debug("listing container [{}], keyPath [{}], prefix [{}]", container, keyPath, prefix);
    MapBuilder<String, BlobMetaData> blobsBuilder = MapBuilder.newMapBuilder();
    CloudBlobClient client = this.getSelectedClient(account, mode);
    CloudBlobContainer blobContainer = client.getContainerReference(container);

    SocketAccess.doPrivilegedVoidException(() -> {
        if (blobContainer.exists()) {
            for (ListBlobItem blobItem : blobContainer.listBlobs(keyPath + (prefix == null ? "" : prefix))) {
                URI uri = blobItem.getUri();
                logger.trace("blob url [{}]", uri);

                // uri.getPath is of the form /container/keyPath.* and we want to strip off the /container/
                // this requires 1 + container.length() + 1, with each 1 corresponding to one of the /
                String blobPath = uri.getPath().substring(1 + container.length() + 1);

                CloudBlockBlob blob = blobContainer.getBlockBlobReference(blobPath);

                // fetch the blob attributes from Azure (getBlockBlobReference does not do this)
                // this is needed to retrieve the blob length (among other metadata) from Azure Storage
                blob.downloadAttributes();

                BlobProperties properties = blob.getProperties();
                String name = blobPath.substring(keyPath.length());
                logger.trace("blob url [{}], name [{}], size [{}]", uri, name, properties.getLength());
                blobsBuilder.put(name, new PlainBlobMetaData(name, properties.getLength()));
            }
        }
    });

    return blobsBuilder.immutableMap();
}
 

import com.microsoft.azure.storage.blob.CloudBlockBlob; //导入依赖的package包/类
@Override
public void moveBlob(String account, LocationMode mode, String container, String sourceBlob, String targetBlob) throws URISyntaxException, StorageException {
    logger.debug("moveBlob container [{}], sourceBlob [{}], targetBlob [{}]", container, sourceBlob, targetBlob);

    CloudBlobClient client = this.getSelectedClient(account, mode);
    CloudBlobContainer blobContainer = client.getContainerReference(container);
    CloudBlockBlob blobSource = blobContainer.getBlockBlobReference(sourceBlob);
    if (blobSource.exists()) {
        CloudBlockBlob blobTarget = blobContainer.getBlockBlobReference(targetBlob);
        SocketAccess.doPrivilegedVoidException(() -> {
            blobTarget.startCopy(blobSource);
            blobSource.delete();
        });
        logger.debug("moveBlob container [{}], sourceBlob [{}], targetBlob [{}] -> done", container, sourceBlob, targetBlob);
    }
}
 

import com.microsoft.azure.storage.blob.CloudBlockBlob; //导入依赖的package包/类
public byte[] getImageAsArray(String imagefilename) {
  	byte[] b = null;
  	
      CloudBlobClient serviceClient = cloudStorageAccount.createCloudBlobClient();
      // Container name must be lower case.
      CloudBlobContainer container;
try {
	container = serviceClient.getContainerReference(azureStorageProperties.getBlobContainer());
       CloudBlockBlob imgBlob = container.getBlockBlobReference(imagefilename);
       b = downloadImage(imgBlob);
} catch (URISyntaxException | StorageException e) {
	// TODO Auto-generated catch block
	e.printStackTrace();
}
      //return result
      return b;    	
  }
 

import com.microsoft.azure.storage.blob.CloudBlockBlob; //导入依赖的package包/类
public String storeImage(String IncidentId, String fileName, String contentType, byte[] fileBuffer) {
      CloudBlobClient serviceClient = cloudStorageAccount.createCloudBlobClient();
      String imageUriString = null;
      // Container name must be lower case.
      CloudBlobContainer container;
try {
	container = serviceClient.getContainerReference(azureStorageProperties.getBlobContainer());
	container.createIfNotExists();
       // Set anonymous access on the container.
       BlobContainerPermissions containerPermissions = new BlobContainerPermissions();
       containerPermissions.setPublicAccess(BlobContainerPublicAccessType.CONTAINER);
       container.uploadPermissions(containerPermissions);
       String incidentBlob = getIncidentBlobFilename(IncidentId,fileName);
       CloudBlockBlob imgBlob = container.getBlockBlobReference(incidentBlob);
       imgBlob.getProperties().setContentType(contentType);
       imgBlob.uploadFromByteArray(fileBuffer, 0, fileBuffer.length);
       imageUriString = incidentBlob;
} catch (URISyntaxException | StorageException | IOException e) {
	// TODO Auto-generated catch block
	e.printStackTrace();
}
      //return result
      return imageUriString;
  	
  }
 

import com.microsoft.azure.storage.blob.CloudBlockBlob; //导入依赖的package包/类
public byte[] getImageAsArray(String imagefilename) {
	byte[] b = null;

	CloudBlobClient serviceClient = cloudStorageAccount.createCloudBlobClient();
	// Container name must be lower case.
	CloudBlobContainer container;
	try {
		container = serviceClient.getContainerReference(azureStorageProperties.getBlobContainer());
		CloudBlockBlob imgBlob = container.getBlockBlobReference(imagefilename);
		b = downloadImage(imgBlob);
	} catch (URISyntaxException | StorageException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}
	//return result
	return b;    	
}
 

import com.microsoft.azure.storage.blob.CloudBlockBlob; //导入依赖的package包/类
public String storeImage(String IncidentId, String fileName, String contentType, byte[] fileBuffer) {
	CloudBlobClient serviceClient = cloudStorageAccount.createCloudBlobClient();
	String imageUriString = null;
	// Container name must be lower case.
	CloudBlobContainer container;
	try {
		container = serviceClient.getContainerReference(azureStorageProperties.getBlobContainer());
		container.createIfNotExists();
		// Set anonymous access on the container.
		BlobContainerPermissions containerPermissions = new BlobContainerPermissions();
		containerPermissions.setPublicAccess(BlobContainerPublicAccessType.CONTAINER);
		container.uploadPermissions(containerPermissions);
		String incidentBlob = getIncidentBlobFilename(IncidentId,fileName);
		CloudBlockBlob imgBlob = container.getBlockBlobReference(incidentBlob);
		imgBlob.getProperties().setContentType(contentType);
		imgBlob.uploadFromByteArray(fileBuffer, 0, fileBuffer.length);
		imageUriString = incidentBlob;
	} catch (URISyntaxException | StorageException | IOException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}
	//return result
	return imageUriString;

}
 

import com.microsoft.azure.storage.blob.CloudBlockBlob; //导入依赖的package包/类
private static CloudBlockBlob primeRootContainer(CloudBlobClient blobClient,
    String accountName, String blobName, int fileSize) throws Exception {

  // Create a container if it does not exist. The container name
  // must be lower case.
  CloudBlobContainer container = blobClient.getContainerReference("https://"
      + accountName + "/" + "$root");
  container.createIfNotExists();

  // Create a blob output stream.
  CloudBlockBlob blob = container.getBlockBlobReference(blobName);
  BlobOutputStream outputStream = blob.openOutputStream();

  outputStream.write(new byte[fileSize]);
  outputStream.close();

  // Return a reference to the block blob object.
  return blob;
}
 

import com.microsoft.azure.storage.blob.CloudBlockBlob; //导入依赖的package包/类
@Test
public void outOfBandFolder_uncleMkdirs() throws Exception {

  // NOTE: manual use of CloubBlockBlob targets working directory explicitly.
  // WASB driver methods prepend working directory implicitly.
  String workingDir = "user/"
      + UserGroupInformation.getCurrentUser().getShortUserName() + "/";

  CloudBlockBlob blob = testAccount.getBlobReference(workingDir
      + "testFolder1/a/input/file");
  BlobOutputStream s = blob.openOutputStream();
  s.close();
  assertTrue(fs.exists(new Path("testFolder1/a/input/file")));

  Path targetFolder = new Path("testFolder1/a/output");
  assertTrue(fs.mkdirs(targetFolder));
}
 

import com.microsoft.azure.storage.blob.CloudBlockBlob; //导入依赖的package包/类
@Test
public void outOfBandFolder_parentDelete() throws Exception {

  // NOTE: manual use of CloubBlockBlob targets working directory explicitly.
  // WASB driver methods prepend working directory implicitly.
  String workingDir = "user/"
      + UserGroupInformation.getCurrentUser().getShortUserName() + "/";
  CloudBlockBlob blob = testAccount.getBlobReference(workingDir
      + "testFolder2/a/input/file");
  BlobOutputStream s = blob.openOutputStream();
  s.close();
  assertTrue(fs.exists(new Path("testFolder2/a/input/file")));

  Path targetFolder = new Path("testFolder2/a/input");
  assertTrue(fs.delete(targetFolder, true));
}
 

import com.microsoft.azure.storage.blob.CloudBlockBlob; //导入依赖的package包/类
@Test
public void outOfBandFolder_siblingCreate() throws Exception {

  // NOTE: manual use of CloubBlockBlob targets working directory explicitly.
  // WASB driver methods prepend working directory implicitly.
  String workingDir = "user/"
      + UserGroupInformation.getCurrentUser().getShortUserName() + "/";
  CloudBlockBlob blob = testAccount.getBlobReference(workingDir
      + "testFolder3/a/input/file");
  BlobOutputStream s = blob.openOutputStream();
  s.close();
  assertTrue(fs.exists(new Path("testFolder3/a/input/file")));

  Path targetFile = new Path("testFolder3/a/input/file2");
  FSDataOutputStream s2 = fs.create(targetFile);
  s2.close();
}
 

import com.microsoft.azure.storage.blob.CloudBlockBlob; //导入依赖的package包/类
@Test
public void outOfBandFolder_rename() throws Exception {

  // NOTE: manual use of CloubBlockBlob targets working directory explicitly.
  // WASB driver methods prepend working directory implicitly.
  String workingDir = "user/"
      + UserGroupInformation.getCurrentUser().getShortUserName() + "/";
  CloudBlockBlob blob = testAccount.getBlobReference(workingDir
      + "testFolder4/a/input/file");
  BlobOutputStream s = blob.openOutputStream();
  s.close();

  Path srcFilePath = new Path("testFolder4/a/input/file");
  assertTrue(fs.exists(srcFilePath));

  Path destFilePath = new Path("testFolder4/a/input/file2");
  fs.rename(srcFilePath, destFilePath);
}