Torch Object Storage
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- Documentation
Torch Object StorageSDK ReferenceJavaObject InterfaceDownload ObjectImage Download and Transcoding (Java SDK)
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Image Download and Transcoding (Java SDK)
Copy pageDownload PDFImage Download and Transcoding (Java SDK)
This article describes how to configure image transcoding parameters via the Java SDK GetObject interface to process downloaded images.
Category
Beginning with version 2.6.0, the Java SDK GetObject interface supports setting image transcoding parameters.
Sample Code
The following code demonstrates how to configure image transcoding parameters.
import com.volcengine.tos.TOSV2;
import com.volcengine.tos.TOSV2ClientBuilder;
import com.volcengine.tos.TosClientException;
import com.volcengine.tos.TosServerException;
import com.volcengine.tos.model.object.GetObjectV2Input;
import com.volcengine.tos.model.object.GetObjectV2Output;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Map;
public class GetObjectWithPictureProcessExample {
public static void main(String[] args) {
String endpoint = "your endpoint";
String region = "your region";
String accessKey = System.getenv("TOS_ACCESS_KEY");
String secretKey = System.getenv("TOS_SECRET_KEY");
String bucketName = "bucket-example";
String objectKey = "example_dir/example_object.txt";
String filePath = "example_dir/example_file.txt";
String process = "the image process param";
TOSV2 tos = new TOSV2ClientBuilder().build(region, endpoint, accessKey, secretKey);
GetObjectV2Input input = new GetObjectV2Input().setBucket(bucketName).setKey(objectKey)
.setProcess(process);
File file = new File(filePath);
if (file.getParentFile() != null && !file.getParentFile().exists()) {
file.getParentFile().mkdirs();
}
try(GetObjectV2Output output = tos.getObject(input);
FileOutputStream fos = new FileOutputStream(file)) {
System.out.println("begin to read content in object to file.");
if (output.getContent() != null) {
byte[] buffer = new byte[4096];
int length;
while ((length = output.getContent().read(buffer)) != -1) {
fos.write(buffer, 0, length);
}
}
fos.flush();
System.out.println("getObject succeed.");
System.out.println("object's etag is " + output.getEtag());
System.out.println("object's lastModified is " + output.getLastModified());
System.out.println("object's crc64 value is " + output.getHashCrc64ecma());
System.out.println("object's storageClass is " + output.getStorageClass());
System.out.println("object's cacheControl is " + output.getCacheControl());
System.out.println("object's contentDisposition is " + output.getContentDisposition());
System.out.println("object's contentEncoding is " + output.getContentEncoding());
System.out.println("object's contentLanguage is " + output.getContentLanguage());
System.out.println("object's contentType is " + output.getContentType());
if (output.getCustomMetadata() != null) {
System.out.println("object has custom meta data.");
for (Map.Entry<String, String> entry : output.getCustomMetadata().entrySet()) {
System.out.println("custom meta key: " + entry.getKey() + ", value: " + entry.getValue());
}
}
} catch (IOException e) {
System.out.println("read data in object failed");
e.printStackTrace();
} catch (TosClientException e) {
System.out.println("getObject failed");
System.out.println("Message: " + e.getMessage());
if (e.getCause() != null) {
e.getCause().printStackTrace();
}
} catch (TosServerException e) {
System.out.println("getObject failed");
System.out.println("StatusCode: " + e.getStatusCode());
System.out.println("Code: " + e.getCode());
System.out.println("Message: " + e.getMessage());
System.out.println("RequestID: " + e.getRequestID());
} catch (Throwable t) {
System.out.println("getObject failed");
System.out.println("unexpected exception, message: " + t.getMessage());
}
}
}
Last updated: 2025.09.22 11:34:16
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