生成oss分片上传 java
时间: 2023-09-08 14:15:10 浏览: 91
以下是Java语言实现OSS分片上传的示例代码:
```
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import com.aliyun.oss.ClientException;
import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import com.aliyun.oss.OSSException;
import com.aliyun.oss.model.CompleteMultipartUploadRequest;
import com.aliyun.oss.model.InitiateMultipartUploadRequest;
import com.aliyun.oss.model.InitiateMultipartUploadResult;
import com.aliyun.oss.model.PartETag;
import com.aliyun.oss.model.UploadPartRequest;
import com.aliyun.oss.model.UploadPartResult;
public class OSSMultipartUpload {
// 阿里云OSS的访问密钥ID和访问密钥Secret
private static final String ACCESS_KEY_ID = "<your access key id>";
private static final String ACCESS_KEY_SECRET = "<your access key secret>";
// OSS存储桶名称和对象名称
private static final String BUCKET_NAME = "<your bucket name>";
private static final String OBJECT_KEY = "<your object key>";
// 要上传的本地文件路径
private static final String FILE_PATH = "<your local file path>";
// 分片大小(默认为1MB)
private static final long PART_SIZE = 1024 * 1024L;
public static void main(String[] args) {
OSS ossClient = new OSSClientBuilder().build("https://oss-cn-hangzhou.aliyuncs.com", ACCESS_KEY_ID, ACCESS_KEY_SECRET);
try {
// 初始化分片上传
InitiateMultipartUploadRequest initiateRequest = new InitiateMultipartUploadRequest(BUCKET_NAME, OBJECT_KEY);
InitiateMultipartUploadResult initiateResult = ossClient.initiateMultipartUpload(initiateRequest);
String uploadId = initiateResult.getUploadId();
System.out.println("Initiated multipart upload with upload id: " + uploadId);
// 上传分片
List<PartETag> partETags = new ArrayList<PartETag>();
File file = new File(FILE_PATH);
long fileLength = file.length();
long partSize = PART_SIZE;
int partCount = (int) (fileLength / partSize);
if (fileLength % partSize != 0) {
partCount++;
}
for (int i = 0; i < partCount; i++) {
long startPos = i * partSize;
long curPartSize = Math.min(partSize, fileLength - startPos);
InputStream inputStream = new FileInputStream(file);
inputStream.skip(startPos);
UploadPartRequest uploadRequest = new UploadPartRequest();
uploadRequest.setBucketName(BUCKET_NAME);
uploadRequest.setKey(OBJECT_KEY);
uploadRequest.setUploadId(uploadId);
uploadRequest.setInputStream(inputStream);
uploadRequest.setPartSize(curPartSize);
uploadRequest.setPartNumber(i + 1);
UploadPartResult uploadResult = ossClient.uploadPart(uploadRequest);
partETags.add(uploadResult.getPartETag());
System.out.println("Uploaded part " + (i + 1) + " with ETag: " + uploadResult.getPartETag().getETag());
}
// 完成分片上传
CompleteMultipartUploadRequest completeRequest = new CompleteMultipartUploadRequest(BUCKET_NAME, OBJECT_KEY, uploadId, partETags);
ossClient.completeMultipartUpload(completeRequest);
System.out.println("Completed multipart upload with upload id: " + uploadId);
} catch (OSSException e) {
System.err.println("OSSException: " + e.getErrorCode() + " - " + e.getMessage());
} catch (ClientException e) {
System.err.println("ClientException: " + e.getMessage());
} catch (IOException e) {
System.err.println("IOException: " + e.getMessage());
} finally {
ossClient.shutdown();
}
}
}
```
请注意,上面的代码中使用了阿里云OSS的Java SDK,您需要先将其添加到您的项目中并在代码中进行引用。此外,代码中的一些常量需要根据您的实际情况进行修改。