我在门户上为我的特定blob生成SAS令牌,然后通过令牌成功下载它。
样本代码:
import com.microsoft.azure.storage.blob.CloudBlockBlob;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URI;
public class DownloadBlobSAS {
public static final String blobSasToken = "***";
public static void main(String[] args) {
try {
CloudBlockBlob sasBlob = new CloudBlockBlob(new URI(blobSasToken));
InputStream input = sasBlob.openInputStream();
InputStreamReader inr = new InputStreamReader(input, "UTF-8");
String utf8str = org.apache.commons.io.IOUtils.toString(inr);
System.out.println(utf8str);
System.out.println("print done");
} catch (Exception e) {
e.printStackTrace();
}
}
}
输出结果:
如果要生成SAS令牌,需要首先提供连接字符串以访问容器或blob。
然后你可以用
generateSharedAccessSignature()
方法来创建SAS令牌。您可以参考
sample code
:
SharedAccessBlobPolicy sp = createSharedAccessPolicy(
EnumSet.of(SharedAccessBlobPermissions.READ, SharedAccessBlobPermissions.LIST), 300);
BlobContainerPermissions perms = new BlobContainerPermissions();
perms.getSharedAccessPolicies().put("readperm", sp);
this.container.uploadPermissions(perms);
Thread.sleep(30000);
CloudBlockBlob sasBlob = new CloudBlockBlob(new URI(this.blob.getUri().toString() + "?"
+ this.blob.generateSharedAccessSignature(null, "readperm")));
希望对你有帮助。