Problem with file upload

[balachandra maddina]

Hi There,

  Im trying a file upload using the below code but on my server side no file items are available but without changing the server code if i try using a plain html with a form then the server was able to see file items. please let me know if im missing anything here.

GWT code:

-----------------

 uploadForm = new FormPanel();

      uploadForm.reset();

      uploadForm.setAction("../upload");

      uploadForm.setEncoding(FormPanel.ENCODING_MULTIPART);

      uploadForm.setMethod(FormPanel.METHOD_POST);

      FileUpload upload = new FileUpload();

      uploadForm.add(upload);

      uploadPanel.add(uploadForm);

Server side code:

-------------------------

String contentType = request.getContentType();

      if (!ServletFileUpload.isMultipartContent(request)) {

         return super.onSubmit(request, response, command, errors);

      }

      FileItemFactory factory = new DiskFileItemFactory();

      ServletFileUpload upload = new ServletFileUpload(factory);

      try {

         List<FileItem> fileItems = upload.parseRequest(request);

         if (null != fileItems && !fileItems.isEmpty()) {

Your help is very much appreciated.

Thank you,

bala. 

[aditya sanas]

try adding a statement upload.setName("<your form name>");
after creation of object for FileUpload.

--
Aditya

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[Bruno Lopes]

Hellos balachandra ! :D

I create this solution and it  works fine:

Cliente side:

final FormPanel form = new FormPanel();

final FileUpload upload = new FileUpload();

public static  String UPLOAD_RESULT = "";

public static String EVENT_NAME = "";

private boolean isIMG = true;

public FileUploadPadroes(){

form.setEncoding(FormPanel.ENCODING_MULTIPART);

form.setMethod(FormPanel.METHOD_POST);

HorizontalPanel holder = new HorizontalPanel();

upload.setName("upload");

holder.add(upload);

upload.addChangeHandler(new ChangeHandler() {

@Override

public void onChange(ChangeEvent event) {

form.setAction("/padroes/UploadService?isIMG="+isIMG()+"&eventName="+EVENT_NAME);

if(upload.getFilename()==null || upload.getFilename().length()<1){

// PageBusAdapter.publishDoCreateEventUpload("No valid file attached.");

}else{ 

form.submit();

}

}

});

form.add(holder);

}

public FormPanel getForm() {

return form;

}

public FileUpload getUpload() {

return upload;

}

public boolean isIMG() {

return isIMG;

}

public void setIMG(boolean isIMG) {

this.isIMG = isIMG;

}

On server side :

protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

// ServletFileUpload uploadHandler = new ServletFileUpload();

boolean isIMG = Boolean.parseBoolean(request.getParameter("isIMG"));

// Create a factory for disk-based file items

DiskFileItemFactory factory = new DiskFileItemFactory();

// Create a new file upload handler

ServletFileUpload upload = new ServletFileUpload(factory);

if(isIMG){

// Set factory constraints

factory.setSizeThreshold(1000000);//"resources/upload"

// Set overall request size constraint

upload.setSizeMax(1000000);

}else {

// Set factory constraints

factory.setSizeThreshold(10000000);//"resources/upload"

// Set overall request size constraint

upload.setSizeMax(10000000);

}

try {

/*

* Parse the request

*/

String eventName = request.getParameter("eventName");

List<FileItem> lUploadingFiles = upload.parseRequest(request);

for (FileItem item : lUploadingFiles) {

processUpload(item,isIMG,eventName);

}

}catch(FileUploadException ex) {

FileUploadPadroes.UPLOAD_RESULT = "The file size is to big," +

" must be less than 1MB.";

log("Error encountered while parsing the request",ex);

} catch(Exception ex) {

log("Error encountered while uploading file",ex);

}

}

private void processUpload(FileItem uploadItem,boolean isIMG,String eventName)

{

File uploadedFile = null;

String uploadFileName = uploadItem.getName();

 

if(isIMG)

uploadedFile = new File("padroes/resources/event/"+ eventName +"/images/" + uploadFileName);

else

uploadedFile = new File("padroes/resources/event/"+ eventName +"/videos/" + uploadFileName);

/**

    * handling file uploads

    */

      try

  {

uploadItem.write(uploadedFile);

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

--

[malliseven.hills]

uploadForm = new FormPanel();

      uploadForm.reset();

      uploadForm.setAction("upload");

      uploadForm.setEncoding(FormPanel.ENCODING_MULTIPART);

      uploadForm.setMethod(FormPanel.METHOD_POST);

      FileUpload upload = new FileUpload();

      uploadForm.add(upload);

      uploadPanel.add(uploadForm);

use this ..i guess i would be work fine .

http://java-malli.blogspot.com/search?updated-max=2010-04-08T03%3A53%3A00-07%3A00&max-results=7

Thanks,
Malli.
 

--

[balachandra maddina]

Thank you. its working fine after setName.

Regards,

bala.