Spring4, jboss eap 6.4.0 xlsx Error loading files

Question

Spring4, jboss eap 6.4.0 xlsx Error loading files

I have problems downloading files in a Spring4 application.

TL; DR

After downloading the .xlsx file, we have more of the file than the original. In addition, we cannot open it in Microsoft Office.

Problem

I checked every tutorial, made an implementation in each case. It also works with almost all types of files except XLSX.

Scenario

I am using a file (e.g. http://www.sample-videos.com/download-sample-xls.php first )

In terminal:

$ ls -la | grep .xlsx
-rw-r--r--@  1 user  staff    19K 31 mar 13:46 SampleXLSFile_19kb.xlsx

19Kb

But after loading I have:

$ ls -la | grep .xlsx
-rw-r--r--   1 user  staff    24K 31 mar 13:47 SampleXLSFile_19kb.xlsx

whaaat !? 24K?

After debugging, I got to the point that the file is in the Jboss temp directory with a new large size.

What is the problem?

I cannot open the .xslx file in excel after loading, I cannot process them in the application. The file is damaged.

? , xlsx .

:

@RequestMapping(value = "/api/file", method = RequestMethod.POST)
public ResponseEntity upload(@RequestParam("file") MultipartFile file) throws Exception {
    if (!file.isEmpty()) {
        try {
            BufferedOutputStream stream = new BufferedOutputStream(
                    new FileOutputStream(new File(this.uploadDirectory + "/" + file.getOriginalFilename())));
            FileCopyUtils.copy(file.getInputStream(), stream);
            stream.close();
        } catch (Exception e) {
            throw new Exception(e);
        }
    }
    return new ResponseEntity(null, HttpStatus.OK);
}