upload multiple files , enctype=“multipart/form-data”

Question

I want to upload multiple files to the controller but its taking only one.

I am using multipart for file transfer. How to get the multiple files to the controller side. I am not able to access bytes and filename. Its throwing errors,

@RequestMapping(value = "/home/step38/uploadReport", method = RequestMethod.POST) public ModelAndView uploadReport( @RequestParam(value = "fileName") List<MultipartFile> files, @RequestParam(value = "pLogId") String pLogId, HttpServletRequest request, HttpSession session) { int applicationNameId = 0; String fileName; String typeOption = "Raw Particle Data"; for(MultipartFile file:files) fileName = file.getOriginalFilename(); logger.debug("step3.1 upload particle count -- Start"); ModelAndView modelAndView = createModelAndView(ToogleStep.step38); setCurrentStep(session, modelAndView, ToogleStep.step38); String view = "redirect:/home/step38"; modelAndView.setViewName(view); try { User user = (User) session.getAttribute(Constants.USER_DB); Project current_project = (Project) session.getAttribute(Constants.PROJECT); Credential credential = (Credential) session.getAttribute(Constants.AUTH_USER); boolean checkOK = true; if (current_project != null && SystemUtils.projectEditable(current_project, credential)) { long projectId = current_project.getId(); if(checkOK) { byte[] bytes = file.getBytes(); HashMap<String,String> options= new HashMap<String,String>(); //added pLogId in the options(this will contain demoToogleFileInfoId) options.put(ToogleReportDataConstants.TTL_PROCESS_LOG_ID_OPTION,pLogId); String toogleFileId = reportService.uploadReport(user, projectId, fileName, typeOption, bytes, applicationNameId, options); } } }

tryingtolearn · Accepted Answer · 2015-05-07 22:46:48Z

You are not looping through at the right location. try looping it after you have your modelAndView(view)

 int applicationNameId = 0; String typeOption = "Raw Particle Data"; ModelAndView modelAndView = createModelAndView(ToogleStep.step38); setCurrentStep(session, modelAndView, ToogleStep.step38); String view = "redirect:/home/step38"; modelAndView.setViewName(view); // upload multiple files. for(MultipartFile file:files){ String fileName= file.getOriginalFilename();

and then you will be able to access bytes and filename. Give this a try. Atleast by looking at your problem I can suggest and if you can give more specific error, I can help.

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