Solved: weird fileupload behaviour: No form data left for WOFileUpload
Solved: weird fileupload behaviour: No form data left for WOFileUpload
- Subject: Solved: weird fileupload behaviour: No form data left for WOFileUpload
- From: OCsite via Webobjects-dev <email@hidden>
- Date: Sun, 13 Jul 2025 22:39:13 +0200
Aaron,
well, your vague remembrance brought me to the very thing I should have done at
first, that is, digging up and checking the legacy WebObjects documentation.
For it simply and unequivocally states
===
inputStream
WebObjects sets this attribute to an InputStream representing the contents of
the file upload. This binding
can be used only when it is the only WOFileUpload element on the page.
===
D'oh.
Thanks a lot,
OC
> On 13. 7. 2025, at 16:26, Aaron Rosenzweig <email@hidden> wrote:
>
> Hi OC,
>
> I vaguely remember that if there is a streaming upload it needs to be last in
> the form (vertically top-down). Anything after it won’t get synchronized to
> the bound variables.
>
> I also remember something about a legacy multipart parser that might help you
> do what you want but I couldn’t find it just now when I looked.
>
> Perhaps you can try an “AjaxFlexibleFileUpload” and let the users stream at
> that moment instead of after clicking send at the bottom of the page.
> Sometimes we you hit a brick wall, you need to walk around.
>
>> On Jul 12, 2025, at 9:23 AM, OCsite via Webobjects-dev
>> <email@hidden <mailto:email@hidden>>
>> wrote:
>>
>> Hi there,
>>
>> I've just bumped into something weird. I often use uploads to memory, like
>> this:
>>
>> ===
>> <wo:form enctype="multipart/form-data">
>> <wo:fileUpload data="$fileData" filePath="$fileName"
>> mimeType="$mime"/>
>> <wo:submit value="Import" action="$import"/>
>> </wo>
>> ===
>>
>> they work without problems, and there can be any number of them in the same
>> page. But now I've added an upload to file, like this:
>>
>> ===
>> <wo:form enctype="multipart/form-data">
>> <wo:fileUpload finalFilePath="$fileName"
>> streamToFilePath="$filePath" filePath="$originalFilePath" mimeType="$mime"/>
>> <wo:submit value="Upload" action="$upload"/>
>> </wo>
>> ===
>>
>> and it seems whenever it is in page, no other upload (of any type) can be
>> there. Testing seems to suggest that
>> - as already mentioned, any number of to-memory uploads in a page works all
>> right, presumed there's no to-file one in there
>> - if there's a single to-file upload in a page and any number of to-memory
>> ones, the to-file one works, but all the to-memory ones fail
>> - if there's more to-file uploads in a page, all the uploads (of any type)
>> fail.
>>
>> The failure looks like this:
>>
>> ===
>> Caused by: java.lang.IllegalStateException:
>> <com.webobjects.appserver._private.WOFileUpload> No form data left for
>> WOFileUpload!
>> at - WOFileUpload.takeValuesFromRequest(WOFileUpload.java:247)
>> at -
>> WODynamicGroup.takeChildrenValuesFromRequest(WODynamicGroup.java:84)
>> ...
>> ===
>>
>> Does this make any sense? Can it be fixed or worked around anyhow, so that
>> all uploads in a page which contains (at least) one to-file upload work?
>>
>> Thanks a lot!
>> OC
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