Unable to add message board attachment via JSON

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.X EE, 7.0.0 Beta 1
• Fix Version/s: 6.2.5 CE GA6, 6.2.X EE, 7.0.0 Beta 1
• Component/s: Frontend Infrastructure, Web Services, Web Services > JSON WS
• Labels:
  • QA-CT
  • liferay-fixpack-portal-84-6210
• Branch Version/s:
  6.2.x
• Backported to Branch:
  Committed
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/33692

Description
Unable to add message board attachment via JSON

UPDATE: Steps to reproduce with patch
Changed the JSONWS API. New steps to reproduce/test:
1. Start Liferay and login as admin
2. Go to

{domain}/api/jsonws?signature=%2Fmbmessage%2Fadd-message-11-groupId-categoryId-subject-body-format-fileName-file-anonymous-priority-allowPingbacks-serviceContext. Fill out fields like below and submit form.
groupId: groupId of Guest group
categoryId: 0
subject: any string
body: any string
fileName: any valid file name with file type. ex: "test.txt"
file: any file that corresponds to file type from fileName
3. Go to Site Administration > Message Boards

Expected results: Results tab shows the MBMessage created. Navigate to Site Administration (of Liferay site) > Content > Message Boards. It should contain the MBMessage with the file attached.

----

Old steps, not applicable!
Steps to reproduce/Testing done
# Start Liferay and login as admin
# Go to {domain}

/api/jsonws?signature=%2Fmbmessage%2Fadd-message-10-groupId-categoryId-subject-body-format-inputStreamOVPs-anonymous-priority-allowPingbacks-serviceContext

1. • groupId: Enter the Site ID located in the Site Settings
   • categoryId: 0
   • Subject: Any string
   • Body: Any string
   • Format: html
   • inputStreamOVPs: [test.txt,123456]
   • Anonymous: Any boolean value
   • Priority: 0
   • allowPingbacks: Any boolean value
2. Hit Invoke
3. Receive the following error:

   "Unable to convert to type: com.liferay.portal.kernel.util.ObjectValuePair"

If inputStreamOVPs is set to:
[]
The post submits successfully.

Results of Testing
Expected behavior: The message board post and attachment is added
Actual behavior: An error is returned and the post and attachment is not added

Errors/Logs
"Unable to convert to type: com.liferay.portal.kernel.util.ObjectValuePair"

Reproduced...
Reproduced in trunk? Unable to test; the JSON api has changed ( 66aed56d5b2e1b93d20660fb44b4316f7f0107ef)
Reproduced in branch? Yes, "jodd.typeconverter.TypeConversionException" (1df12fe8e3e51d564926c8a86b4486fd3ee17589)