AWS Glacier多部分上传是一种将大文件分成多个部分上传到AWS Glacier存储服务的方法。在进行最后一部分上传时,需要使用范围选项来指定最后一部分的大小。
以下是一个使用AWS SDK for Java进行AWS Glacier多部分上传并设置范围选项的代码示例:
import com.amazonaws.auth.AWSStaticCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.client.builder.AwsClientBuilder;
import com.amazonaws.services.glacier.AmazonGlacier;
import com.amazonaws.services.glacier.AmazonGlacierClientBuilder;
import com.amazonaws.services.glacier.model.*;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.List;
public class GlacierMultipartUploadLastPartRangeExample {
public static void main(String[] args) throws IOException {
String region = "your_aws_region";
String accessKey = "your_aws_access_key";
String secretKey = "your_aws_secret_key";
String vaultName = "your_glacier_vault_name";
String archiveDescription = "your_archive_description";
String filePath = "path_to_your_file";
BasicAWSCredentials credentials = new BasicAWSCredentials(accessKey, secretKey);
AmazonGlacier glacierClient = AmazonGlacierClientBuilder.standard()
.withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration("https://glacier." + region + ".amazonaws.com", region))
.withCredentials(new AWSStaticCredentialsProvider(credentials))
.build();
InitiateMultipartUploadRequest initiateRequest = new InitiateMultipartUploadRequest()
.withVaultName(vaultName)
.withArchiveDescription(archiveDescription)
.withPartSize("1048576"); // Set the part size in bytes (e.g., 1MB)
InitiateMultipartUploadResult initiateResult = glacierClient.initiateMultipartUpload(initiateRequest);
String uploadId = initiateResult.getUploadId();
long partSize = 1048576; // 1MB
File file = new File(filePath);
long filePosition = 0;
long fileSize = file.length();
int partNumber = 1;
// Calculate the part size for the last part
long lastPartSize = fileSize - ((partNumber - 1) * partSize);
while (filePosition < fileSize) {
UploadMultipartPartRequest uploadRequest = new UploadMultipartPartRequest()
.withVaultName(vaultName)
.withUploadId(uploadId)
.withRange("bytes " + filePosition + "-" + (filePosition + partSize - 1) + "/*")
.withBody(new FileInputStream(file))
.withChecksum(archiveDescription)
.withContentLength(partSize)
.withPartSize(String.valueOf(partSize))
.withPartNumber(partNumber);
glacierClient.uploadMultipartPart(uploadRequest);
filePosition += partSize;
partNumber++;
}
CompleteMultipartUploadRequest completeRequest = new CompleteMultipartUploadRequest()
.withVaultName(vaultName)
.withUploadId(uploadId)
.withChecksum(archiveDescription)
.withArchiveSize(String.valueOf(fileSize));
glacierClient.completeMultipartUpload(completeRequest);
}
}
在这个示例中,我们使用InitiateMultipartUploadRequest初始化一个新的多部分上传请求,并得到一个唯一的uploadId。然后,我们将文件分成多个部分,并使用UploadMultipartPartRequest上传每个部分,其中包括范围选项来指定部分的大小。最后,我们使用CompleteMultipartUploadRequest完成多部分上传。
请注意,你需要将代码中的your_aws_region、your_aws_access_key、your_aws_secret_key、your_glacier_vault_name和path_to_your_file替换为你自己的实际值。
这是一个基本的示例,你可以根据自己的需求进行修改和扩展。希望能对你有所帮助!