使用Aspose转换和合并pdf

Question

I am trying to build a service to convert documents to pdfs and merge them using Aspose. So far I haven't found the right combination of functions to do so. Here is the closes I have gotten.

Creating an Aspose document in their cloud:

storageApi.PutCreate('file.jpg', null, null, '/tmp/file.pdf', cb);

Converting the document to pdf:

pdfApi.PutCreateDocument('file.pdf', 'file.jpg', null, 'jpg', null, null, cb)

I think this step may be wrong because the pdf is exactly the same size as the jpg. That being said I still get a 200 response.

Merging the documents:

pdfApi.PutMergeDocuments('output.pdf', null, null, ['file.pdf', ...], cb)

This seems to not be returning the error:

{ Message: 'Object reference not set to an instance of an object.' }

And then to retrieve the file :

storageApi.getDownload('output.pdf', null, null, cb)

This is obviously a little irrelevant considering the last step fails, but I think it should work if I can get things going.

What I suspect is happening is the converting step is just renaming the file and not converting it. I've tried with pdfApi.PutConvertDocument but I haven't got that working either.

I haven't found the documentation particularly helpful in this area. What steps should I take to get this working?

Answer 1

It looks like you are not passing the list of source documents correctly. Please check http://www.aspose.com/docs/display/pdfcloud/Merge+Multiple+PDF+Files for more details on how to format the list of documents when passing it to PutMergeDocuments . Specially focus on the following variable which is passed as parameter in the above mentioned example.

var mergeDocumentsBody = {
        'List' : [mergefilename1, mergefilename2]
};

I work as developer evangelist at Aspose.