get_object.md

GetObject Example

Code Snippet

Initialize the Bucket service with access-key-id and secret-access-key

EnvContext env = new EnvContext(accessKey,accessSecret);
String zoneKey = "pek3a";
String bucketName = "testBucketName";
Bucket bucket = new Bucket(env, zoneKey, bucketName);

then you can get objects

getObject(bucket, "folder/test.mp3", "/Users/chengww/Desktop/test.mp3");

    /**
     * Get(Download) an object from the bucket.
     *
     * @param bucket        bucket
     * @param objectKey     looks like this: "folder/fileName".<br/>
     *                      If objectKey = "fileName", means the object is in the bucket's root folder.
     * @param localKeptPath the object will be kept in this path.
     */
    private void getObject(Bucket bucket, String objectKey, String localKeptPath) {
        Bucket.GetObjectInput input = new Bucket.GetObjectInput();
        // Use try-with-resource to close resources, otherwise it will cause connection leaks.
        // Using try-with-finally or explicitly calling output's close() method also works.
        try (Bucket.GetObjectOutput output = bucket.getObject(objectKey, input)) {
            InputStream inputStream = output.getBodyInputStream();
            if (output.getStatueCode() == 200) {
                FileOutputStream fos = new FileOutputStream(localKeptPath);
                int len;
                byte[] bytes = new byte[4096];
                while ((len = inputStream.read(bytes)) != -1) {
                    fos.write(bytes, 0, len);
                }
                fos.flush();
                fos.close();
                System.out.println("Get object success.");
                System.out.println("ObjectKey = " + objectKey);
                System.out.println("LocalKeptPath = " + localKeptPath);
            } else {
                System.out.println("Get object status code == 200, but inputStream is null, skipped.");
                // Failed
                System.out.println("Failed to get object.");
                System.out.println("StatueCode = " + output.getStatueCode());
                System.out.println("Message = " + output.getMessage());
                System.out.println("RequestId = " + output.getRequestId());
                System.out.println("Code = " + output.getCode());
                System.out.println("Url = " + output.getUrl());
            }
        } catch (QSException | IOException e) {
            e.printStackTrace();
        }
    }