ContentService throws a NullPointerException when finding for ContentType.ATTACHMENT

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1

Hello,

I am trying to use the ContentService class to retrieve results, but following code throws a NullPointerException:

contentService.find()
                .withTitle("Non existing title")
                .withType(ContentType.ATTACHMENT)
                .fetch();

Searching for an existing title, like the “welcome.png” attachment from the example space, has the same behaviour. However, searching for ContentType.PAGE works as expected.

Tested with library version 7.19.4.

2

Hello AnsgarNell,

I think you have the same problem as mentioned here Cannot use ContentService.find().withSpace() and ContentType.ATTACHMENT

So for you maybe the com.atlassian.confluence.api.service.content.AttachmentService (AttachmentService.AttachmentFinder (Atlassian Confluence 7.19.0 API)) is the answer.

Regards,
Christian

3

Thank you Christian, you are absolutely right. I missed this part in the AttachmentService documentation:

Restrict the attachments returned to those with the given parent. Unless the attachment is being looked up by ID via the withId method, this method is compulsory.

I suppose nobody at Atlassian thought about doing a check before calling fetch() which would give a message like stating that exact condition instead a completely useless NullPointerException.

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