Spring MVC file upload example

Below is a running example to upload a file using spring , please add the below lone in your application-context file to add CommonsMultipartResolver

   <bean id="multipartResolver"

        class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>

Write your JSP page like below , Please do add HTML code if you want to run it as a seprate page

<?xml version="1.0" encoding="UTF-8" standalone="no"?>

<div  xmlns:c="http://java.sun.com/jsp/jstl/core" xmlns:jsp="http://java.sun.com/JSP/Page" xmlns:page="urn:jsptagdir:/WEB-INF/tags/form" xmlns:table="urn:jsptagdir:/WEB-INF/tags/form/fields" version="2.0">

         <form id="fileuploadForm" action="fileupload" method="POST" enctype="multipart/form-data" class="cleanform">
          <c:if test="${successfull==Y}">
              <c:out value="File Was Successfully uploaded"></c:out>
          </c:if>
          <label for="file">File</label>
          <input id="file" type="file" name="file" />
          <p><button type="submit">Upload</button></p> 
         </form>
</div>

Write the controller to handle requests related to file upload

package com.aramco.peasd.dbp.web;

import java.io.IOException;
//import org.springframework.mvc.extensions.ajax.AjaxUtils;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.context.request.WebRequest;
import org.springframework.web.multipart.MultipartFile;

@Controller

@RequestMapping("/fileupload")
public class FileUploadController {
       @ModelAttribute
       public void ajaxAttribute(WebRequest request, Model model) {

//            model.addAttribute("ajaxRequest", AjaxUtils.isAjaxRequest(request));

       }

       @RequestMapping(method=RequestMethod.GET)
       public void fileUploadForm() {
  

       }

@RequestMapping(method=RequestMethod.POST,produces =
"text/html"
)
       public String processUpload(@RequestParam MultipartFile file, Model model) throws IOException {
        

              model.addAttribute(  "message", "File '" + file.getOriginalFilename() + "' uploaded successfully");

              model.addAttribute("successfull", "Y");
              //**This byte array can then be sent to any content managment server  to save the file
              byte[] fileByteArray=file.getBytes();
//**Or you may want to save the file using java IO on a folder somewhere in you server             
              return "fileupload/showFileUpload";

//this will render to a page called showFileUpload.jspx

       }
       @RequestMapping(params="fileupload")
       public String showFileUploadPage(){
              return "fileupload/showFileUpload";
       }
}