How do I perform simple upload by using OSS SDK for Java? - Object Storage Service

Tek bir nesne yüklemek için PutObject işlemini çağırarak basit yükleme yapabilirsiniz. Basit yükleme ile akış tabanlı yükleme ve nesne yükleme gerçekleştirebilirsiniz. Akış tabanlı yüklemede, veri kaynağı olarak InputStream kullanılarak veriler Object Storage Service (OSS) hizmetine yüklenir. Nesne yüklemeye ise yerel dosyalar OSS hizmetine yüklenir. Bu konu, bir nesneyi yüklemek için akış tabanlı yükleme ve nesne yükleme yöntemlerinin nasıl kullanılacağını açıklar.

Kullanım notları

Bu konuda Çin (Hangzhou) bölgesinin genel uç noktası kullanılmıştır. Aynı bölgedeki diğer Alibaba Cloud hizmetlerinden OSS hizmetine erişmek için dahili bir uç nokta kullanın. Desteklenen bölgeler ve uç noktalar hakkında ayrıntılı bilgi için bkz. Bölgeler ve uç noktalar.
Bu konuda erişim kimlik bilgileri ortam değişkenlerinden alınır. Daha fazla bilgi için bkz. Erişim Kimlik Bilgilerini Yapılandırma.
Bu konuda bir OSS uç noktası kullanılarak bir OSSClient örneğinin oluşturulması gösterilmektedir. Özel bir etki alanı kullanma veya Security Token Service (STS) kimlik bilgileriyle kimlik doğrulama gibi alternatif yapılandırmalar için bkz. İstemci yapılandırması.
PutObjectRequest içinde key parametresi, kullanıcı tarafından tanımlanan nesnenin tam adını belirtir. Aşağıdaki örneklerde bu değer objectName ile sağlanır. Tam nesne adı, dizin ön eki ve dosya adı içerebilir; örneğin exampledir/exampleobject.txt. Paket adı dahil edilmemelidir ve nesne adlandırma kurallarına uyulmalıdır.

İzinler

Varsayılan olarak bir Alibaba Cloud hesabı tam izinlere sahiptir. Bir Alibaba Cloud hesabı altındaki RAM kullanıcıları veya RAM rolleri varsayılan olarak herhangi bir izne sahip değildir. Alibaba Cloud hesabı veya hesap yöneticisi, işlem izinlerini RAM ilkeleri veya Paket İlkesi aracılığıyla vermelidir.

API	Eylem	Açıklama
PutObject	`oss:PutObject`	Bir nesne yükler.
	`oss:PutObjectTagging`	Bir nesne yüklerken `x-oss-tagging` üstbilgisini kullanarak nesne etiketleri belirtiyorsanız gereklidir.
	`kms:GenerateDataKey`	Bir nesne yüklerken `X-Oss-Server-Side-Encryption: KMS` üstbilgisi `KMS` olarak ayarlanmışsa gereklidir.
	`kms:Decrypt`

Akış tabanlı yükleme

Akış tabanlı yüklemeyi kullanarak bir veri akışını bir OSS nesnesine yükleyebilirsiniz.

Not

Aynı ada sahip bir nesne zaten varsa yüklenen veriler mevcut nesne içeriğinin üzerine yazar. Aynı ada sahip mevcut bir nesne yoksa yeni bir nesne oluşturulur.

Dize yükleme

Aşağıdaki örnek kod, examplebucket paketinin exampledir dizinindeki exampleobject.txt nesnesine bir dizenin nasıl yükleneceğini gösterir:

import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.*;
import java.io.ByteArrayInputStream;

public class Demo {

    public static void main(String[] args) throws Exception {
        // In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint. 
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the 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 bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the key in PutObjectRequest, which is the complete object name. Do not include the bucket name, for example, exampledir/exampleobject.txt. 
        String objectName = "exampledir/exampleobject.txt";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";
        
        // Create an OSSClient instance.
        // Call the shutdown method to release associated resources when the OSSClient is no longer in use.
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build()
        
        try {
            // Specify the string that you want to upload. 
            String content = "Hello OSS, hello world";

            // Create a PutObjectRequest object. 
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, new ByteArrayInputStream(content.getBytes()));

            // The following sample code provides an example on how to specify the storage class and access control list (ACL) of an object when you upload the object: 
            // ObjectMetadata metadata = new ObjectMetadata();
            // metadata.setHeader(OSSHeaders.OSS_STORAGE_CLASS, StorageClass.Standard.toString());
            // metadata.setObjectAcl(CannedAccessControlList.Private);
            // putObjectRequest.setMetadata(metadata);
           
            // Upload the string. 
            PutObjectResult result = ossClient.putObject(putObjectRequest);            
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            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("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

Bayt dizisi yükleme

Aşağıdaki örnek kod, examplebucket paketinin exampledir dizinindeki exampleobject.txt nesnesine bir bayt dizisinin nasıl yükleneceğini gösterir:

import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.*;
import java.io.ByteArrayInputStream;

public class Demo {

    public static void main(String[] args) throws Exception {
        // In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint. 
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the 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 bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the key in PutObjectRequest, which is the complete object name. Do not include the bucket name, for example, exampledir/exampleobject.txt. 
        String objectName = "exampledir/exampleobject.txt";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";

        // Create an OSSClient instance.
        // Call the shutdown method to release associated resources when the OSSClient is no longer in use.
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build()

        try {
            // Specify a byte array. 
            byte[] content = "Hello OSS, hello world".getBytes();
            // Create a PutObjectRequest object. 
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, new ByteArrayInputStream(content));
            
            // Create a PutObject request. 
            PutObjectResult result = ossClient.putObject(putObjectRequest);            
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            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("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

Ağ akışı yükleme

Aşağıdaki örnek kod, examplebucket paketinin exampledir dizinindeki exampleobject.txt nesnesine bir ağ akışının nasıl yükleneceğini gösterir:

import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;
import java.io.InputStream;
import java.net.URL;

public class Demo {

    public static void main(String[] args) throws Exception {
        // In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint. 
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the 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 bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the key in PutObjectRequest, which is the complete object name. Do not include the bucket name, for example, exampledir/exampleobject.txt. 
        String objectName = "exampledir/exampleobject.txt";
        // Specify the URL of the network stream. 
        String url = "https://www.aliyun.com/";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";
        
        // Create an OSSClient instance.
        // Call the shutdown method to release associated resources when the OSSClient is no longer in use.
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();
        
        try {
            InputStream inputStream = new URL(url).openStream();
            // Create a PutObjectRequest object. 
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, inputStream);
            // Create a PutObject request. 
            PutObjectResult result = ossClient.putObject(putObjectRequest);            
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            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("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

Dosya akışı yükleme

Aşağıdaki örnek kod, examplebucket paketinin exampledir dizinindeki exampleobject.txt nesnesine bir dosya akışının nasıl yükleneceğini gösterir:

import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;
import java.io.FileInputStream;
import java.io.InputStream;

public class Demo {

    public static void main(String[] args) throws Exception {
        // In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint. 
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the 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 bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the key in PutObjectRequest, which is the complete object name. Do not include the bucket name, for example, exampledir/exampleobject.txt. 
        String objectName = "exampledir/exampleobject.txt";
        // Specify the full path of the local file that you want to upload. Example: D:\\localpath\\examplefile.txt. 
        // If you do not specify the path of the local file, the local file is uploaded from the path of the project to which the sample program belongs. 
        String filePath= "D:\\localpath\\examplefile.txt";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";
        
        // Create an OSSClient instance.
        // Call the shutdown method to release associated resources when the OSSClient is no longer in use.
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();
        
        try {
            InputStream inputStream = new FileInputStream(filePath);
            // Create a PutObjectRequest object. 
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, inputStream);
            // Create a PutObject request. 
            PutObjectResult result = ossClient.putObject(putObjectRequest);
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            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("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

Nesne yükleme

Nesne yüklemeyi kullanarak yerel bir dosyayı OSS hizmetine yükleyebilirsiniz.

Aşağıdaki örnek kod, examplefile.txt adlı yerel bir dosyanın examplebucket paketinin exampledir dizinine nasıl yükleneceğini gösterir. Yerel dosya yüklendikten sonra exampledir dizinindeki nesnenin adı exampleobject.txt olur.

import com.aliyun.oss.*;
import com.aliyun.oss.common.auth.*;
import com.aliyun.oss.common.comm.SignVersion;
import com.aliyun.oss.model.PutObjectRequest;
import com.aliyun.oss.model.PutObjectResult;
import java.io.File;

public class Demo {

    public static void main(String[] args) throws Exception {
        // In this example, the endpoint of the China (Hangzhou) region is used. Specify your actual endpoint. 
        String endpoint = "https://oss-cn-hangzhou.aliyuncs.com";
        // Obtain access credentials from environment variables. Before you run the 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 bucket. Example: examplebucket. 
        String bucketName = "examplebucket";
        // Specify the key in PutObjectRequest, which is the complete object name. Do not include the bucket name, for example, exampledir/exampleobject.txt. 
        String objectName = "exampledir/exampleobject.txt";
        // Specify the full path of the local file that you want to upload. Example: D:\\localpath\\examplefile.txt. 
        // By default, if the path of the local file is not specified, the local file is uploaded from the path of the project to which the sample program belongs. 
        String filePath= "D:\\localpath\\examplefile.txt";
        // Specify the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the region to cn-hangzhou.
        String region = "cn-hangzhou";
        
        // Create an OSSClient instance. 
        // Call the shutdown method to release associated resources when the OSSClient is no longer in use.
        ClientBuilderConfiguration clientBuilderConfiguration = new ClientBuilderConfiguration();
        clientBuilderConfiguration.setSignatureVersion(SignVersion.V4);        
        OSS ossClient = OSSClientBuilder.create()
        .endpoint(endpoint)
        .credentialsProvider(credentialsProvider)
        .clientConfiguration(clientBuilderConfiguration)
        .region(region)               
        .build();

        try {
            // Create a PutObjectRequest object. 
            PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName, objectName, new File(filePath));
            // The following sample code provides an example on how to specify the storage class and ACL of an object when you upload the object: 
            // ObjectMetadata metadata = new ObjectMetadata();
            // metadata.setHeader(OSSHeaders.OSS_STORAGE_CLASS, StorageClass.Standard.toString());
            // metadata.setObjectAcl(CannedAccessControlList.Private);
            // putObjectRequest.setMetadata(metadata);
            
            // Upload the local file. 
            PutObjectResult result = ossClient.putObject(putObjectRequest);           
        } catch (OSSException oe) {
            System.out.println("Caught an OSSException, which means your request made it to OSS, "
                    + "but was rejected with an error response for some reason.");
            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("Caught an ClientException, which means the client encountered "
                    + "a serious internal problem while trying to communicate with OSS, "
                    + "such as not being able to access the network.");
            System.out.println("Error Message:" + ce.getMessage());
        } finally {
            if (ossClient != null) {
                ossClient.shutdown();
            }
        }
    }
}

SSS

İlgili konular

Basit yükleme için eksiksiz örnek kodu görüntülemek üzere GitHub adresini ziyaret edin.
Basit yüklemeyi gerçekleştirmek için çağırabileceğiniz API işlemi hakkında daha fazla bilgi için bkz. PutObject.
Bir nesnenin ve anahtarının tanımı için bkz. [nesne genel bakış](https://www.alibabacloud.com/help/en/oss/user-guide/object-overview).