How to generate azure blob storage SAS url using java?

问题

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'

回答1:

There's a REST API that you can call. See at https://docs.microsoft.com/en-us/rest/api/storageservices/create-service-sas.

回答2:

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));

回答3:

After my tests, you can also generate SAS in the following form:

        StorageSharedKeyCredential credential = new StorageSharedKeyCredential("<accountName>", "<accountKey>");


        String sas = new BlobServiceSasSignatureValues()
                .setExpiryTime(OffsetDateTime.now().plusHours(1))
                .setPermissions(new BlobSasPermission().setReadPermission(true))
                .setContainerName("<containerName>")
                .setBlobName("blobName")
                .generateSasQueryParameters(credential)
                .encode();

回答4:

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);

来源：https://stackoverflow.com/questions/64781212/how-to-generate-azure-blob-storage-sas-url-using-java