CODEWITHSUNDEEP
javaspringazureazure-web-app-serviceazure-storage
yali
yali

Reputation: 1118

Azure file image path using java

Hi I am trying to save image on azure storage , I already have configuration step and I have upload method 

AsynchronousFileChannel fileChannel = AsynchronousFileChannel.open(sourceFile.toPath());
    TransferManager.uploadFileToBlockBlob(fileChannel, blob, 8 * 1024 * 1024, null).subscribe(response -> {
        System.out.println("Completed upload request.");
        System.out.println(response.response().statusCode());

    });

How can I get the url image path on azure to save it on database and show it on my website?

Upvotes: 0

Views: 942

Answers (1)

Peter Pan
Peter Pan

Reputation: 24128

As @GauravMantri said, you can get the URL of a blob via blob.toURL(). Then, if the container of the blob is public (be set public access level) and the ContentType property of the blob is set correctly like image/png, you can directly access the image via the url, such as to use in an img tag to show in a web page below.

<img src="myaccountname.blob.core.windows.net/test/testURL">

However, considering for secure access, a container is set private access level, please refer to the offical documents Secure access to an application's data in the cloud and Using shared access signatures (SAS). Then, we need to generate a blob url with SAS signature for accessing.

Here is the sample code to generate a blob url with SAS signature.

SharedKeyCredentials credentials = new SharedKeyCredentials(accountName, accountKey);
ServiceSASSignatureValues values = new ServiceSASSignatureValues()
                .withProtocol(SASProtocol.HTTPS_ONLY) // Users MUST use HTTPS (not HTTP).
                .withExpiryTime(OffsetDateTime.now().plusDays(2)) // 2 days before expiration.
                .withContainerName(containerName)
                .withBlobName(blobName);
BlobSASPermission permission = new BlobSASPermission()
                .withRead(true)
                .withAdd(true)
                .withWrite(true);
values.withPermissions(permission.toString());
SASQueryParameters serviceParams = values.generateSASQueryParameters(credentials);
String sasSign = serviceParams.encode();
String blobUrlWithSAS = String.format(Locale.ROOT, "https://%s.blob.core.windows.net/%s/%s%s",
                accountName, containerName, blobName, sasSign);

You also can add the SAS signature at the end of the string of blob.toURL().

String blobUrlWithSAS = blob.toString()+sasSign;

About SAS Signature, you can refer to these sample codes in ServiceSASSignatureValues Class and AccountSASSignatureValues Class.

Upvotes: 1

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