使用Java的Azure文件映像路径 [英] Azure file image path using java

问题描述

我正在尝试将图像保存在Azure存储器上，我已经有了配置步骤，并且有了上载方法

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());

    });

我如何在azure上获取url图像路径以将其保存在数据库中并显示在我的网站上?

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

推荐答案

正如@GauravMantri所说，您可以通过blob.toURL()获取Blob的URL.然后，如果Blob的容器是公共的(设置为公共访问级别)，并且Blob的ContentType属性已正确设置为image/png，则可以直接通过url访问图像，例如在img标签显示在下面的网页中.

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">

但是，考虑到安全访问，已将容器设置为私有访问级别，请参阅官方文档 Using shared access signatures (SAS) .然后，我们需要生成带有SAS签名的Blob网址以进行访问.

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.

这是生成带有SAS签名的blob URL的示例代码.

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);

您也可以在blob.toURL()字符串的末尾添加SAS签名.

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

String blobUrlWithSAS = blob.toString()+sasSign;

关于SAS签名，您可以在 AccountSASSignatureValues Class .

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

这篇关于使用Java的Azure文件映像路径的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！