spring 3 file upload using CommonsMultipartResolver not working properly - spring-mvc

Question

I am using CommonsMultipartResolver to upload a word/pdf file into postgres database, while uploading the file I have printed the byte[] array using file.getBytes(), it showing like
bytes==========================[B#6b02547c
the file is being upload but when I download the file I am getting the following error from ms-word: "The file abc.docx cannot be opened because there are problems with contents". please help me to solve this problem.
#SuppressWarnings({ "unused", "static-access" })
#RequestMapping( value="/RegisterCandidate" , method = RequestMethod.POST)
private String RegisterCandidate(HttpServletRequest request,
HttpServletResponse response,
#RequestParam CommonsMultipartFile[] fileUpload ) throws Exception{
System.out.println("In method");
String email = request.getParameter("email");
System.out.println("email==============="+email);
String Password = request.getParameter("password");
String usr_name = request.getParameter("name");
String mobile_no = request.getParameter("mobile_no");
Date dateentry = new Date();
java.sql.Timestamp entry_date = new Timestamp(dateentry.getTime());
Users_Pojo usr = new Users_Pojo();
if (fileUpload != null && fileUpload.length > 0) {
for (CommonsMultipartFile aFile : fileUpload){
usr.setFilename(aFile.getOriginalFilename());
usr.setFile_data(aFile.getBytes());
System.out.println("aFile.getBytes()======"+aFile.getBytes());
System.out.println("aFile.getInputStream()======"+aFile.getInputStream());
System.out.println("aFile.getStorageDescription()======"+aFile.getStorageDescription());
System.out.println("aFile.getSize();======"+aFile.getSize());
System.out.println("aFile.getContentType();==="+aFile.getContentType());/* */
}
}
usr.setUc_password("ex123");
usr.setUc_name(email);
usr.setUc_contact_person(email);
usr.setUc_phone_no(BigInteger.valueOf(Long.parseLong(mobile_no)));
usr.setUc_email_id(email);
usr.setUc_type_id(1);
usr.setUc_active(1);
usr.setValid_from(null);
usr.setValid_to(null);
usr.setDesignation("jobseekar");
usr.setIp_address("164.100.200.179");
usr.setUser_location(1);
usr.setEntry_date(entry_date);
scm_service.save(usr, email);
/*System.out.println("email==="+email);
System.out.println("Password==="+Password);
System.out.println("usr filename==="+usr.getFilename());*/
return "success";
//return "redirect:Login.html";
}
Configuration:
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize" value="2000000" />
</bean>
downloading using :
#RequestMapping(value = "/download",method = RequestMethod.GET)
public void getAttachmenFromDatabase( HttpServletRequest request,HttpServletResponse response){
response.setContentType("application/vnd.ms-word");
String resume_id = request.getParameter("resume_id");
long attachid = Long.parseLong(resume_id);
try {
Users_Pojo file_attachment = (Users_Pojo) scm_service.getFiles(attachid);
System.out.println("file_attachment.getFilename()======="+file_attachment.getFile_data());
response.setHeader("Content-Disposition", "inline; filename=\""+ file_attachment.getFilename() +"\"");
response.setContentLength(file_attachment.getFile_data().length);
FileCopyUtils.copy(file_attachment.getFile_data(), response.getOutputStream());
response.flushBuffer();
} catch (IOException e) {
e.printStackTrace();
}
}