How to Read File from PersistentVolumeClaims in SpringBoot

Question

I have "file.txt" in my OpenShift PersistentVolumeClaims. My StorageClasses is NFS.

Is it possible to access and read "file.txt" from my spring-boot code? (This spring-boot code will be deployed on OpenShift and I'll mount the PVC to the DeploymentConfigs)

If yes, how can I do that? (I'm confused in how to retrieve the file from persistent volume from inside the code)

Any help will be appreciated. Thanks.

Answer 1

What @larsks said in the comment is correct:

your application doesn't know or care about the fact that you're using a persistent volume

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However, I used:

Resource resource = new ClassPathResource("/pvc/mount/path/file.txt");
InputStream inputStream = resource.getInputStream();

and:

Resource resource = resourceLoader.getResource("/pvc/mount/path/file.txt");
InputStream inputStream = resource.getInputStream();

Both doesn't work.

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Below is what I use in the end:

Path file = Paths.get("/pvc/mount/path/file.txt");
InputStream stream = Files.newInputStream(file);