How to generate azure blob storage SAS url using java?

0
votes

I want to generate a SAS url that i can share with user to connect to storage account and upload a file to any location.

How can i generate the SAS url using java api.

i found one documentation but looks like all api are depreciated https://azuresdkdocs.blob.core.windows.net/$web/java/azure-storage-blob/12.0.0/com/azure/storage/blob/sas/BlobServiceSasSignatureValues.html

Env:
Java Version: 8.0
BLOB STORAGE JAVA SDK: group: 'com.azure', name: 'azure-storage-blob', version: '12.8.0'
3
azureazure-storageazure-storage-blobsazure-java-sdk
@Frank Gong not really helped.. i can't even see there is example documentation available for java docs.microsoft.com/en-us/azure/storage/blobs/… – Mohit Singh
Please check if this helps github.com/Azure/azure-storage-java – Jagrati Modi
@MohitSingh, This is the document I post, but I found some problems, so I deleted it. – Frank Gong
@Frank Gong currently we don't have any documentation for java api? the post you shared still had problem? – Mohit Singh
@MohitSingh. Please wait for me to test. – Frank Gong

3 Answers

2
votes

Following code worked for me.

BlobContainerSasPermission blobContainerSasPermission = new BlobContainerSasPermission()
                .setReadPermission(true)
                .setWritePermission(true)
                .setListPermission(true);
        BlobServiceSasSignatureValues builder = new BlobServiceSasSignatureValues(OffsetDateTime.now().plusDays(1), blobContainerSasPermission)
                .setProtocol(SasProtocol.HTTPS_ONLY);
        BlobClient client = new BlobClientBuilder()
                .connectionString("connection string")
                .blobName("")
                .buildClient();
        String blobContainerName = "test";
        return String.format("https://%s.blob.core.windows.net/%s?%s",client.getAccountName(), blobContainerName, client.generateSas(builder));
0
votes

You can use azure storage SDK for maven as follows:

 <dependency>
    <groupId>com.microsoft.azure</groupId>
    <artifactId>azure-storage</artifactId>
    <version>8.3.0</version>
</dependency>

Then follow the below code to generate SAS token which you can append to your storage URL.

    CloudStorageAccount account = CloudStorageAccount.parse(blobConnectionString);
        
     // Create a blob service client
     CloudBlobClient blobClient = account.createCloudBlobClient();
                              
     CloudBlobContainer container = blobClient.getContainerReference(containerName);
    
     Date expirationTime = Date.from(LocalDateTime.now().plusDays(7).atZone(ZoneOffset.UTC).toInstant());
    SharedAccessBlobPolicy sharedAccessPolicy=new SharedAccessBlobPolicy();
    sharedAccessPolicy.setPermissions(EnumSet.of(SharedAccessBlobPermissions.READ, 
        SharedAccessBlobPermissions.WRITE,SharedAccessBlobPermissions.ADD));
    sharedAccessPolicy.setSharedAccessStartTime(new Date());
    sharedAccessPolicy.setSharedAccessExpiryTime(expirationTime);
        
    String sasToken = container.generateSharedAccessSignature(sharedAccessPolicy, null);