Web based application for comparasion of 2 pdf documents

问题

We need to integrate into an existing java web application, a new feature that allows the user to compare 2 pdf documents and see the differences. So, I started to search for some already exiting library or tool (open source or commercial) that could help me solve this request. Does anyone know if exists this kind of application? That would take 2 pdf, compare them and display the differences?

Thanks in advance, Madalina

回答1:

My answer may not be satisfactory , but this project from apache -> http://pdfbox.apache.org/

may help u. You can convert the pdf's to text file and compare it.

回答2:

Hello i made a PDF comparision project built on PDFBOX you can donwload source code from link

Example Usage is mentioned below it performs three levels of comparison you can simply add a loop by saving target and source files name in a list and then calling its comparison functionalities .

        pdfComparison cmp=new pdfComparison();
      //Text Comparision page by page         if(cmp.textComparision("ReferencePDF\\PDF2_302.pdf","C:\\\PDF2_305.pdf"))
              {
        System.out.print("\n********PDF text is identical******* ");

              }
              else 
              {
                  System.out.print("\n********PDF text is  not identical******* ");

              }

//Extract all images in PDF and compare   
    cmp.extract_ALL_Images_ThenCompare("PDF2_302.pdf","PDF2_302.pdf");

//Convert Both PDF pages into JPG and perform image comparison 
        cmp.PDF_Convert_To_Jpeg_Comparision("PDF2_302.pdf","PDF2_302.pdf");

You will see all image differences in folder Differences in the project . If any issue just put a message for me

来源：https://stackoverflow.com/questions/10011432/web-based-application-for-comparasion-of-2-pdf-documents

标签

java

pdf

web-applications

document