Overlay text, image and barcode to PFD in JSP/Tomcat

The project is aimed to produce a set of function to ad text rows, one image and a 2D barcode (QR) in an existing PDF document, in a specific position that can be determined by reading the mouse click over the PDF document page. The running environment is JSP under Apache Tomcat. The software will be developed using free libraries, chosen by the developer, to handle the PDF documents and the generation of the QR code. The PDF management library must be .NET compatible. The proghect must be completed in 7 days. Please see tha attached document for the complete specifications