Performing a File-based Upload

Prerequisites

Ensure that you have selected a proper SDK version by referring to Installing the SDK and have downloaded and installed the SDK.

Sample Code

File-based upload uses local files as the data source of objects. Sample code is as follows:

// Hard-coded or plaintext AK and SK are risky. For security purposes, encrypt your AK and SK before storing them in the configuration file or environment variables. In this example, the AK and SK are stored in environment variables. Before running the code in 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);
try {
    // Upload a file.
    // localfile indicates the path of the local file to be uploaded, which must include the file name.
    PutObjectRequest request = new PutObjectRequest();
    request.setBucketName("examplebucket");
    request.setObjectKey("objectkey");
    request.setFile(new File("localfile"));
    obsClient.putObject(request);
    System.out.println("putObject successfully");
} catch (ObsException e) {
    System.out.println("putObject failed");
    // Request failed. Print the HTTP status code.
    System.out.println("HTTP Code:" + e.getResponseCode());
    // Request failed. Print the server-side error code.
    System.out.println("Error Code:" + e.getErrorCode());
    // Request failed. Print the error details.
    System.out.println("Error Message:" + e.getErrorMessage());
    // Request failed. Print the request ID.
    System.out.println("Request ID:" + e.getErrorRequestId());
    System.out.println("Host ID:" + e.getErrorHostId());
    e.printStackTrace();
} catch (Exception e) {
    System.out.println("putObject failed");
    // Print other error information.
    e.printStackTrace();
}

• 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 for encoding, call PutObjectRequest.setIsEncodeHeaders(false) to disable auto encoding. To use auto encoding, you need to install the latest version of the SDK.