My application requires a reporting facility in excel/csv format. In case of large report, the generated CSV is corrupt. Though i am able to e-mail the generated CSV using smtp.
I tried changing the following with no lead, your help on this is appreciated
Change the library to POI
Changed the library to JXL
Monitored if there is a memory leakage
This is a web based application and the code is written in JSP.
POI is mainly for MS office formats like xls, xlsx, doc. JXL is also for xls files. You should use a framework which is for CSV like OpenCSV.
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I'm learning about data driven testing using Selenium and Excel. I'm taking an online course that has asked used to add the Apache poi and poi-ooxml dependencies in Maven.
I'm struggling to understand what the differences between the two are. Are both required in order to retrieve data in Excel and pass these to our tests?
Thanks
Excel files has long history
Excel 97-2003 workbook:
This is a legacy Excel file that follows a binary file format. The file extension of the format is .xls.
Excel 97-2003 in terms of apache poi is called - Horrible Spreadsheet Format As the Excel file format is complex and contains a number of tricky characteristics,
apache-poi jar has code to handle these file
Excel 2007+ workbook:
This is the default XML-based file format for Excel 2007 and later versions. It follows the Office Open XML (OOXML) format, which is a zipped, XML-based file format developed by Microsoft for representing office documents. The file extension of the format is .xlsx. ( DOCX,PPTX are other OOXML based examples).
Excel 2007+ workbook in terms of apache poi is called - XML Spreadsheet Format -these file format are advanced version of HSSF and has additional features, code to handle these files are written in apache-poi-ooxml jar
More reading
As .xls is almost dead but still some applications use it, so for backward compatibility both dependencies are required.
here is what Apache have to say -
HSSF Excel XLS poi For HSSF only, if common SS is needed see below
Common SS Excel XLS and XLSX poi-ooxml WorkbookFactory and friends
all require poi-ooxml, not just core poi
you can read more at their official website http://poi.apache.org/components/index.html#components
I'm working to convert the content of an excel (.xlsx) file to html, to the best extent possible...
I tried both Apache Tika and directly Apache POI, but I haven't been able to extract charts or images included in an excel file. I also looked in the XSSFExcelExtractorDecorator class from the Apache Tika sources, but I don't understand how I should use that Decorator class, and I can't find an end-to-end example about this.
Can anybody provide a working example, or a hint for the starting point ?
Thank you.
I need to generate xml, excel, pdf, text file from list what i retrieved from Database. I have used itext-1.3.jar for that and I have generated successfully. Here what i want to know means, is there is any other API is available like itext, if yes means kindly suggest me . Thanks in advance.
Apache Java API To Access Microsoft Excel Format Files can read/write Microsoft Excel 2003/2010 formats.
I'm trying to read excel file and pass all the data to DB. I found a few code examples but all of them required external jars. How can I read excel files using only the standard library?
IF you don't want to use a library then you will have to download the Excel file format specs from MS and write an Excel parser yourself (which is extremely complicated and takes > 10 years for one developer). For the OpenXML format spec see here and here.
Thus I really recommend using a library for that...
Try Apache POI - a free Java library for dealing with MS Office documents..
You can save as the excel file *.cvs and sperated ";". Then, you can read file line by line and get the columns which is getting from each token.
Microsoft excel uses a binary way to save its data, so manually reading excel files might be a hassle. If you could convert the excel (xls) to a comma seperated values (csv) file, then you can just read the file and split your input on the comma's.
This is a difficult problem. First off, it is not as simple as "adding a third party library". There are no existing EXCEL reading libraries that do not cost money and the one that I know that does work is very expensive AND has bugs in it.
One strategy is to create an Excel add in that reads the data and transfers it to your application by OLE or the clipboard or by a TCP/IP port or saves it to a temporary file. If you look in the source code for OPeNDAP.org's ODC project you can find an Excel add in and TCP capability to do this.
You can try referring to the reader in OpenOffice which is open source code, however, in my opinion that code is not easily refactorable into a private project for various reasons.
Microsoft has components and tools to open Excel files and expose them via COM objects.
You can also learn the BIFF format and write your own parser. You probably would want to write a parser for BIFF5, but be forewarned, this is a BIG project, even if you only parse a limited number of data types.
I need to convert an excel spreadsheet to PDF file. I looked for in the Web and I found that the best way to do this is using OpenOffice API, but it is not free.
Someone know any open source library for doing this?
Any examples code is appreciating
Apache POI can read Excel. iText can write PDF.