In ipad,excel text data is not visible for Java developed WebApplication

Question

I have been struggling to fix this critical production defect from quite long time. Any help is appreciated.
I have generated  .xlsx file using custom web application. The generated excel is working fine in windows system but not in iPad. Not sure of what exactly the problem was.On openings the same with iPad safari browser, The excel is showing cells for ‘date and numbers’ but not for text content.
If the downloaded excel is opened using ‘quick office’ then it is showing everything.
I have coded in java as below:
response.setContentType("application/vnd.openxmlformats-officedocument.spreadshe etml.sheet");
response.setContentLength((int) file.length());
            String fileName = "abc.xlsx;"
           response setHeader("Content-Disposition", "attachment; filename=" + fileName);
response.setHeader("Pragma", "public");
           response setHeader("Cache-control", "no-transform");
            input = new BufferedInputStream(new FileInputStream(file));
            output = new BufferedOutputStream(ServletActionContext.getResponse().getOutputStream());
         byte[] buffer = new byte[8192];
         for (int length = 0; (length = input.read(buffer)) > 0;) {
             output.write(buffer, 0, length);
            output.flush();
Let me know if you need more info.
Regards,
Surya

Answer 1

You would do much better to post your question in the developers' forum, where your fellow techies can be found. We tend to be just simple users here.