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Apache poi open xml tag search

I'm trying to parse a .docx (Open XML) file using Apache POI on Java. I want to be able to extract tags like these: <w:tag w:val="tag"/> from my document. The problem is that I didn't find any examples of how to do it in the internet. Is it possible to achieve something like this using Apache POI library for java or some another library?
Similiar question but in C# for reference: OpenXML tag search

Convert Excel to Word using Aspose.Word for Java

I have a requirement to convert excel template to word. Then using Aspose.Word for JAVA I can merge all word templates (including the converted excel template) to PDF file.
Aspose, iText, POI, Jasper, Birt etc doesn't support this. Is there any API in Java which allows this kind of conversion?

Although, you cannot convert Excel spreadsheets to Word documents directly via Aspose.Cells APIs. FYI, Aspose.Cells is a spreadsheet management library that manages MS Excel file formats only. We have another component i.e., Aspose.Words that manages or merges MS word documents. But, I think for your specific requirements, you have to use two Aspose APIs with two steps, that are; Aspose.Cells & Aspose.Pdf to achieve your goal. You will use Aspose.Cells APIs that allows you to convert the spreadsheet formats (XLS/XLSX, etc.) to PDF format. Then you will use Aspose.Pdf APIs which allows you to convert PDF to Word document for your needs.
I am working as Support developer/ Evangelist at Aspose.

you can try the Apache POI - the Java API for Microsoft Documents..
have a look here
http://viralpatel.net/blogs/java-read-write-excel-file-apache-poi/

Adding cell comments from raw xml for Excel 2007 using java

I need to create cell comments for existing excel file by extracting the xlsx file and using raw XML file.
Is it possible to do it in java without using Apache poi library?

Well I don't know much about excel but I found this website that might help you.

Converting Microsoft Office documents and PDF documents to image file with Java

In my current project, I need to convert Microsoft Office documents and PDF documents to image file with Java. Is there any open source Java library for that. And if so, which is the most reliable?

you can try using JODConverter .
It is a open source project. The Java OpenDocument Converter, converts documents between different office formats.
Picked from here

You can use Apache PDFBox for PDF and Apache POI for converting Microsoft office documents.
Apache PDFBox
Apache POI

You can also use docx4j to convert the Office Docs to PDF.

Using the same API to write both Word and PDF documents

HI all
is there any kind of abstraction API over Apache POI/FOP allowing one to use the same API to write both Word and PDF documents ?

I'm not aware of a unified API for the two libraries you have mentioned.
However you may still have a couple of options using a single API:
Use Apache POI to generate the documents in Word format and then use a Word to PDF conversion library to create a PDF from the word document. Another commenter has suggested IText
Use OpenOffice via its Java API to create documents and export them in Microsoft Word or PDF format.

Docmosis will do what you require, assuming you mean a Java (or command line) API. It reads doc and odt files as templates, populates/manipulates via the Java API, and produces the output formats OpenOffice supports. Have a look at the online demo on the web site which lets you see various output formats to render a document in.

When I was working on previous project, I was sure the Apache/POI can be used for Microsoft Documents.
we have IText.jar which we can use it for PDF generation and alteration. please check this will help you.