文件 AWS 開發套件範例 GitHub 儲存庫中有更多可用的 [AWS SDK 範例](https://github.com/awsdocs/aws-doc-sdk-examples)。

本文為英文版的機器翻譯版本，如內容有任何歧義或不一致之處，概以英文版為準。

# `GetObject` 搭配 AWS SDK 或 CLI 使用
<a name="mediastore_example_mediastore_GetObject_section"></a>

下列程式碼範例示範如何使用 `GetObject`。

------
#### [ CLI ]

**AWS CLI**  
**下載物件**  
下列 `get-object` 範例會將物件下載至指定的端點。  

```
aws mediastore-data get-object \
    --endpoint https://aaabbbcccdddee.data.mediastore.us-west-2.amazonaws.com \
    --path=/folder_name/README.md README.md
```
輸出：  

```
{
    "ContentLength": "2307346",
    "ContentType": "image/jpeg",
    "LastModified": "Fri, 19 Jul 2019 21:32:20 GMT",
    "ETag": "2aa333bbcc8d8d22d777e999c88d4aa9eeeeee4dd89ff7f555555555555da6d3",
    "StatusCode": 200
}
```
**若要下載物件的一部分**  
下列 `get-object` 範例會將物件的一部分下載至指定的端點。  

```
aws mediastore-data get-object \
    --endpoint https://aaabbbcccdddee.data.mediastore.us-west-2.amazonaws.com \
    --path /folder_name/README.md \
    --range="bytes=0-100" README2.md
```
輸出：  

```
{
    "StatusCode": 206,
    "ContentRange": "bytes 0-100/2307346",
    "ContentLength": "101",
    "LastModified": "Fri, 19 Jul 2019 21:32:20 GMT",
    "ContentType": "image/jpeg",
    "ETag": "2aa333bbcc8d8d22d777e999c88d4aa9eeeeee4dd89ff7f555555555555da6d3"
}
```
如需詳細資訊，請參閱《AWS Elemental MediaStore 使用者指南》**中的[下載物件](https://docs.aws.amazon.com/mediastore/latest/ug/objects-download.html)。  
+  如需 API 詳細資訊，請參閱《AWS CLI 命令參考》**中的 [GetObject](https://awscli.amazonaws.com/v2/documentation/api/latest/reference/mediastore/get-object.html)。

------
#### [ Java ]

**SDK for Java 2.x**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/mediastore#code-examples)中設定和執行。

```
import software.amazon.awssdk.core.ResponseInputStream;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.mediastore.MediaStoreClient;
import software.amazon.awssdk.services.mediastore.model.DescribeContainerRequest;
import software.amazon.awssdk.services.mediastore.model.DescribeContainerResponse;
import software.amazon.awssdk.services.mediastoredata.MediaStoreDataClient;
import software.amazon.awssdk.services.mediastoredata.model.GetObjectRequest;
import software.amazon.awssdk.services.mediastoredata.model.GetObjectResponse;
import software.amazon.awssdk.services.mediastoredata.model.MediaStoreDataException;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URI;
import java.net.URISyntaxException;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class GetObject {
    public static void main(String[] args) throws URISyntaxException {
        final String usage = """

                Usage:    <completePath> <containerName> <savePath>

                Where:
                   completePath - The path of the object in the container (for example, Videos5/sampleVideo.mp4).
                   containerName - The name of the container.
                   savePath - The path on the local drive where the file is saved, including the file name (for example, C:/AWS/myvid.mp4).
                """;

        if (args.length != 3) {
            System.out.println(usage);
            System.exit(1);
        }

        String completePath = args[0];
        String containerName = args[1];
        String savePath = args[2];

        Region region = Region.US_EAST_1;
        URI uri = new URI(getEndpoint(containerName));
        MediaStoreDataClient mediaStoreData = MediaStoreDataClient.builder()
                .endpointOverride(uri)
                .region(region)
                .build();

        getMediaObject(mediaStoreData, completePath, savePath);
        mediaStoreData.close();
    }

    public static void getMediaObject(MediaStoreDataClient mediaStoreData, String completePath, String savePath) {

        try {
            GetObjectRequest objectRequest = GetObjectRequest.builder()
                    .path(completePath)
                    .build();

            // Write out the data to a file.
            ResponseInputStream<GetObjectResponse> data = mediaStoreData.getObject(objectRequest);
            byte[] buffer = new byte[data.available()];
            data.read(buffer);

            File targetFile = new File(savePath);
            OutputStream outStream = new FileOutputStream(targetFile);
            outStream.write(buffer);
            System.out.println("The data was written to " + savePath);

        } catch (MediaStoreDataException | IOException e) {
            System.err.println(e.getMessage());
            System.exit(1);
        }
    }

    private static String getEndpoint(String containerName) {
        Region region = Region.US_EAST_1;
        MediaStoreClient mediaStoreClient = MediaStoreClient.builder()
                .region(region)
                .build();

        DescribeContainerRequest containerRequest = DescribeContainerRequest.builder()
                .containerName(containerName)
                .build();

        DescribeContainerResponse response = mediaStoreClient.describeContainer(containerRequest);
        return response.container().endpoint();
    }
}
```
+  如需 API 詳細資訊，請參閱*《AWS SDK for Java 2.x API 參考》*中的 [GetObject](https://docs.aws.amazon.com/goto/SdkForJavaV2/mediastore-2017-09-01/GetObject)。

------