For this kind of data manipulation you'll need to create an extension using Integration Studio.

If you have a .NET or Java library which performs the operation you want, it's a relatively simple matter of creating the necessary API in Integration Studio, implementing the actions, publishing the extension, adding it as a reference to your eSpace and finally calling the actions.

If all you have is a command line, you can use .NET / Java to execute that command line in the extension, although this might prove a bit more challenging than if you have a library that does the work for you.

Thanks Ricardo. I'll look into it. 

Hi there
The solution of Ricardo is really helpful.BTW,i want to know that whether there is a powerful program which supprots to merge multipage pdf files at one time.My present pdf merge program can only merge single pdf files.Thanks for any suggestion.

You can use iTextSharp to develop an extension that merges PDFs. It's fairly straight forward.

I've attached an extension that does just that, so you can have a look at the commented code :)
It has two actions:

• MergePDF (First_PDF, Second_PDF) - Returns a single binary with the two pdfs merged
• MergePDF_Bulk ( PDF_Binary[ ] ) - Returns a single binary with all the PDFs in the list merged.

I'll publish it soon in the forge... :)

Best regards.

Check ITextSharp's lisence it's not free anymore. You can try to build your own extension with pdfbox (https://pdfbox.apache.org/)  for the java servers.  Pdfbox can also be used with c#  https://www.squarepdf.net/pdfbox-in-net


Best regards,

Stephan Schvers