com.aliyun.oss.model.GetObjectRequest Java Examples

private GetObjectRequest toGetObjectRequest(String container, String name, GetOptions options) {
    GetObjectRequest request = new GetObjectRequest(container, name);
    if (options.getIfModifiedSince() != null) {
        request.setModifiedSinceConstraint(options.getIfModifiedSince());
    }
    if (!options.getRanges()
                .isEmpty()) {
        String[] ranges = options.getRanges()
                                 .get(0)
                                 .split("-");
        long start = Integer.parseInt(ranges[0]);
        long end = Integer.parseInt(ranges[1]);
        request.setRange(start, end);
    }
    return request;
}
 

@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();
    }
}
 

/** 
 * 下载prefix目录下的所有文件到本地dir目录 
 * @param dir  dir
 * @param prefix  prefix
 * @return return
 */ 
public boolean download(File dir, String prefix){ 
	if(null == prefix){ 
		prefix = ""; 
	} 
	if(prefix.startsWith("/")){ 
		prefix = prefix.substring(1); 
	} 
	final int maxKeys = 200; 
	String nextMarker = null; 
	ObjectListing objectListing; 
	do { 
	    objectListing = client.listObjects(new ListObjectsRequest(config.BUCKET) 
	    .withPrefix(prefix).withMarker(nextMarker).withMaxKeys(maxKeys)); 
	    List<OSSObjectSummary> sums = objectListing.getObjectSummaries(); 
	    for (OSSObjectSummary s : sums) { 
	    	String key = s.getKey(); 
	    	if(key.endsWith("/")){ 
	    		continue; 
	    	} 
	        File file = new File(dir, key); 
	        File parent = file.getParentFile(); 
	        if(null != parent && !parent.exists()){ 
	        	parent.mkdirs(); 
	        } 
	        try{ 
	        	client.getObject(new GetObjectRequest(config.BUCKET, key), file); 
	        }catch(Exception e){ 
	        	e.printStackTrace(); 
	        } 
	        if(ConfigTable.isDebug() && log.isWarnEnabled()){ 
	        	log.warn("[oss download file][local:{}][remote:{}]",file.getAbsolutePath(),key); 
	        } 
	    } 
	    nextMarker = objectListing.getNextMarker(); 
	     
	} while (objectListing.isTruncated()); 

	return true; 
}
 

/**
 * Download the file to the local file
 *
 * @param dir      Local dir
 * @param fileName Oss file name
 */
public void downByLocal(String dir, String fileName) {
    File f = new File(dir);
    if (!f.exists()) {
        f.mkdir();
    }
    Predicate<String> predicate = e -> e.indexOf("/", e.length() - 1) != -1;
    this.ossClient.getObject(new GetObjectRequest(this.ossMeta.getBucket(), fileName), new File(predicate.test(dir) ? dir + fileName : dir + "/" + fileName));
}
 

@Override
public Blob getBlob(String container, String name, GetOptions options) {
    return doOssOperation(oss -> {
        GetObjectRequest req = toGetObjectRequest(container, name, options);
        OSSObject object = oss.getObject(req);
        return convertToBlob(object);
    }, false);

}
 

@Test
public void testGetBlob() throws Exception {
    OSSObject ossObject = new OSSObject();
    ossObject.setKey(FILENAME);
    ossObject.setObjectContent(new ByteArrayInputStream(PAYLOAD.getBytes()));
    Mockito.when(blobUtils.blobBuilder())
           .thenReturn(new BlobBuilderImpl());
    Mockito.when(ossClient.getObject(any(GetObjectRequest.class)))
           .thenReturn(ossObject);
    Blob blob = aliOSSBlobStore.getBlob(CONTAINER, FILENAME);
    String actualPayload = IOUtils.toString(blob.getPayload()
                                                .openStream(), StandardCharsets.UTF_8);
    assertEquals(PAYLOAD, actualPayload);
}
 

/**
 * 同步 阿里云OSS 到本地
 *
 * @param path
 * @param toFile
 * @return
 */
public static boolean download(String path, File toFile) {
    boolean enable = JPressOptions.getAsBool(KEY_ENABLE);

    if (!enable || StrUtil.isBlank(path)) {
        return false;
    }

    path = removeFileSeparator(path);
    String ossBucketName = JPressOptions.get(KEY_BUCKETNAME);
    OSSClient ossClient = createOSSClient();
    try {

        if (!toFile.getParentFile().exists()) {
            toFile.getParentFile().mkdirs();
        }

        if (!toFile.exists()) {
            toFile.createNewFile();
        }
        ossClient.getObject(new GetObjectRequest(ossBucketName, path), toFile);
        return true;
    } catch (Throwable e) {
        log.error("aliyun oss download error!!!  path:" + path + "   toFile:" + toFile, e);
        if (toFile.exists()) {
            toFile.delete();
        }
        return false;
    } finally {
        ossClient.shutdown();
    }
}
 

private static void downloadObject(String endpoint, String keyId, String keySecret, String bucketName, String key, File file) throws IOException {
	getOssClient(endpoint, keyId, keySecret).getObject(new GetObjectRequest(bucketName, key), file);
}
 

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();
    }
}