Download objects from CloudBox

package com.aliyun.oss.demo;

import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.GetObjectRequest;
import java.io.File;
import com.aliyun.oss.common.auth.DefaultCredentialProvider;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.ClientBuilderConfiguration;
import com.aliyun.oss.common.auth.CredentialsProviderFactory;
import com.aliyun.oss.common.auth.EnvironmentVariableCredentialsProvider;

public class Demo {

    public static void main(String[] args) throws Exception {
        // Specify the data endpoint of the OSS on CloudBox bucket.
        String endpoint = "https://cb-f8z7yvzgwfkl9q0h****.cn-hangzhou.oss-cloudbox.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run this sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured.
        EnvironmentVariableCredentialsProvider credentialsProvider = CredentialsProviderFactory.newEnvironmentVariableCredentialsProvider();
        // Specify the name of the OSS on CloudBox bucket. For example, examplebucket.
        String bucketName = "examplebucket";
        // Specify the region where the OSS on CloudBox bucket is located.
        String region = "cn-hangzhou";
        // Specify the ID of the CloudBox.
        String cloudBoxId = "cb-f8z7yvzgwfkl9q0h****";
        // Specify the full path of the object, excluding the bucket name. For example, exampledir/exampleobject.txt.
        String objectName = "exampledir/exampleobject.txt";
        // Specify the local file path to save the downloaded object.
        String pathName = "D:\\localpath\\examplefile.txt";

        // Create an OSSClient instance using Signature Version 4 (V4).
        // Call shutdown() to release resources when the client is no longer needed.
        ClientBuilderConfiguration conf = new ClientBuilderConfiguration();
        conf.setSignatureVersion(SignVersion.V4);
        OSS ossClient = OSSClientBuilder.create()
                .endpoint(endpoint)
                .credentialsProvider(new DefaultCredentialProvider(credentialsProvider.getCredentials()))
                .clientConfiguration(conf)
                .region(region)
                .cloudBoxId(cloudBoxId)
                .build();

        try {
            // Download the object to the specified local file.
            // If the file exists, it is overwritten. If it does not exist, a new file is created.
            // If you do not specify a local path, the file is saved to the path of the project to which the sample program belongs.
            ossClient.getObject(new GetObjectRequest(bucketName, objectName), new File(pathName));
        } catch (OSSException oe) {
            System.out.println("OSS rejected the request.");
            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("Client failed to communicate with OSS.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

import alibabacloud_oss_v2 as oss

# Obtain access credentials from environment variables. Before you run this code example, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured.
credentials_provider = oss.credentials.EnvironmentVariableCredentialsProvider()

# Use the default configuration of the SDK.
cfg = oss.config.load_default()
cfg.credentials_provider = credentials_provider
# Specify the region in which the CloudBox is located, such as cn-hangzhou.
cfg.region = "cn-hangzhou"
# Specify the CloudBox ID. After you set the CloudBox ID, the SDK automatically switches the signing product to oss-cloudbox.
cfg.cloud_box_id = "cb-f8z7yvzgwfkl9q0h****"
# Specify the data domain in the CloudboxId.Region.oss-cloudbox.aliyuncs.com format.
cfg.endpoint = "cb-f8z7yvzgwfkl9q0h****.cn-hangzhou.oss-cloudbox.aliyuncs.com"

# Create an OSS client.
client = oss.Client(cfg)

# Download the object to the specified local file path. If the local file already exists, it is overwritten. Otherwise, a new file is created.
result = client.get_object_to_file(oss.GetObjectRequest(
    bucket="examplebucket",
    key="exampledir/exampleobject.txt",
), "D:\\localpath\\examplefile.txt")

print(f'status code: {result.status_code},'
      f' request id: {result.request_id},'
      f' content length: {result.content_length},'
      f' etag: {result.etag},')

package main

import (
	"context"
	"log"

	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss"
	"github.com/aliyun/alibabacloud-oss-go-sdk-v2/oss/credentials"
)

func main() {
	// Obtain access credentials from environment variables. Before you run this code example, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured.
	// Use the default configuration of the SDK, and specify the region, CloudBox ID, and data domain.
	cfg := oss.LoadDefaultConfig().
		WithCredentialsProvider(credentials.NewEnvironmentVariableCredentialsProvider()).
		// Specify the region in which the CloudBox is located, such as cn-hangzhou.
		WithRegion("cn-hangzhou").
		// Specify the data domain in the CloudboxId.Region.oss-cloudbox.aliyuncs.com format.
		WithEndpoint("cb-f8z7yvzgwfkl9q0h****.cn-hangzhou.oss-cloudbox.aliyuncs.com").
		// Specify the CloudBox ID. After you set the CloudBox ID, the SDK automatically switches the signing product to oss-cloudbox.
		WithCloudBoxId("cb-f8z7yvzgwfkl9q0h****")

	// Create an OSS client.
	client := oss.NewClient(cfg)

	// Specify the local file path to which the object is downloaded.
	localFile := "D:\\localpath\\examplefile.txt"

	// Download the object to the specified local file path. If the local file already exists, it is overwritten. Otherwise, a new file is created.
	result, err := client.GetObjectToFile(context.TODO(), &oss.GetObjectRequest{
		Bucket: oss.Ptr("examplebucket"),
		Key:    oss.Ptr("exampledir/exampleobject.txt"),
	}, localFile)
	if err != nil {
		log.Fatalf("failed to get object to file %v", err)
	}

	log.Printf("get object to file result, status code:%d, request id:%s, content length:%v\n",
		result.StatusCode, result.RequestID, result.ContentLength)
}