Help Center/ Object Storage Service/ SDK Reference/ Android/ Object Upload/ Performing a Streaming Upload
Updated on 2024-06-21 GMT+08:00
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Performing a Streaming Upload

If you have any questions during development, post them on the Issues page of GitHub. For details about parameters and usage of each API, see the API Reference.

Streaming upload uses java.io.InputStream as the data source of an object. You can call ObsClient.putObject to upload the data streams to OBS. Sample code is as follows:

Uploading a Character String (Byte Array)

// Hard-coded or plaintext AK/SK are risky. For security purposes, encrypt your AK/SK and store them in the configuration file or environment variables. In this example, the AK/SK are stored in environment variables for identity authentication. Before running this example, configure environment variables ACCESS_KEY_ID and SECRET_ACCESS_KEY_ID.
// Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/intl/en-us/usermanual-ca/ca_01_0003.html.
String ak = System.getenv("ACCESS_KEY_ID");
String sk = System.getenv("SECRET_ACCESS_KEY_ID");
String endPoint = "https://your-endpoint";
// Create an ObsClient instance.
ObsClient obsClient = new ObsClient(ak, sk, endPoint);

String content = "Hello OBS";
obsClient.putObject("bucketname", "objectname", new ByteArrayInputStream(content.getBytes()));

Uploading a Network Stream

// Hard-coded or plaintext AK/SK are risky. For security purposes, encrypt your AK/SK and store them in the configuration file or environment variables. In this example, the AK/SK are stored in environment variables for identity authentication. Before running this example, configure environment variables ACCESS_KEY_ID and SECRET_ACCESS_KEY_ID.
// Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/intl/en-us/usermanual-ca/ca_01_0003.html.
String ak = System.getenv("ACCESS_KEY_ID");
String sk = System.getenv("SECRET_ACCESS_KEY_ID");
String endPoint = "https://your-endpoint";
// Create an ObsClient instance.
ObsClient obsClient = new ObsClient(ak, sk, endPoint);

InputStream inputStream = new URL("http://www.a.com").openStream();
obsClient.putObject("bucketname", "objectname", inputStream);

Uploading a File Stream

// Hard-coded or plaintext AK/SK are risky. For security purposes, encrypt your AK/SK and store them in the configuration file or environment variables. In this example, the AK/SK are stored in environment variables for identity authentication. Before running this example, configure environment variables ACCESS_KEY_ID and SECRET_ACCESS_KEY_ID.
// Obtain an AK/SK pair on the management console. For details, see https://support.huaweicloud.com/intl/en-us/usermanual-ca/ca_01_0003.html.
String ak = System.getenv("ACCESS_KEY_ID");
String sk = System.getenv("SECRET_ACCESS_KEY_ID");
String endPoint = "https://your-endpoint";
// Create an ObsClient instance.
ObsClient obsClient = new ObsClient(ak, sk, endPoint);

FileInputStream fis = new FileInputStream(new File("localfile")); // localfile indicates the path of the local file to be uploaded. You need to specify the file name.
obsClient.putObject("bucketname", "objectname", fis);
// Path of the local file to be uploaded, in which the file name must be specified.
FileInputStream fis2 = new FileInputStream(new File("localfile2"));
PutObjectRequest request = new PutObjectRequest();
request.setBucketName("bucketname");
request.setObjectKey("objectname2");
request.setInput(fis2);
obsClient.putObject(request);
  • To upload a local file, you are advised to use file-based upload.
  • To upload a large file, you are advised to use multipart upload.
  • The file to be uploaded cannot exceed 5 GB.
  • Due to HTTP coding restrictions, non-ASCII characters cannot be sent. If your request headers contain full-width characters, the SDK will URL encode these characters before sending the request. When you use a browser to access the object metadata, the browser automatically decodes the data.
  • If you do not need the SDK to decode for you, call PutObjectRequest.setIsEncodeHeaders(false) to disable auto encoding.
Parent topic: Object Upload