Dynamic file upload data turn to null

[panky_p]

Hi,
I am trying to create a dynamic rich file upload, I have added the file upload listener, It shows the uploaded file but when I try to save the uploaded data some times it turns to null, and some time I am able to save the data properly.

Why is it so?
Any one has idea???

[ilya_shaikovsky]

provide more information like page and bean code used, environment info, web.xml and steps performed on the page.

[panky_p]

Hi Ilya,
I am using Seam 2.1.0.SP1 and RF 3.2.2.SR1

my upload listener is in EditBean

public void fileUploadListener(UploadEvent event) throws IOException
 {
 UploadItem uploadItem = event.getUploadItem();
 HtmlFileUpload htmlFileUpload = (HtmlFileUpload)event.getSource();
 if (uploadItem.isTempFile()){
 try{
 FileUploadBean fileUploadBean = new FileUploadBean();
 File file = uploadItem.getFile();
 FileInputStream fs = new FileInputStream(file);
 int numberBytes = fs.available();
 byte bytearray[] = new byte[numberBytes];
 fs.read(bytearray);
 fileUploadBean.setData(bytearray);
 fileUploadBean.setFileName(uploadItem.getFileName());
 fileUploadBean.setContentType(uploadItem.getContentType());
 htmlFileUpload.setUploadData(fileUploadBean);
 fis.close();

 }catch(FileNotFoundException fnf){

 }catch(IOException ioe){

 }catch(Exception ex){

 }
 }
 }

and my component bean contains following code for file upload

HtmlFileUpload newFileUpload = new HtmlFileUpload();
String fileUploadId = "upload_file";
newFileUpload.setId(fileUploadId);
newFileUpload.setAddControlLabel("Select");
newFileUpload.setListWidth("300");
newFileUpload.setListHeight("300");
newFileUpload.setMaxFilesQuantity(1);
newFileUpload.setImmediateUpload(true);
newFileUpload.setAjaxSingle(true);

MethodBinding fileUploadListener = FacesContext.getCurrentInstance().getApplication().createMethodBinding("#{editBean.fileUploadListener}", new Class[] {UploadEvent.class});
newFileUpload.setFileUploadListener(uploadListener);

and in web.xml i had

 <context-param>
 <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
 <param-value>server</param-value>
 </context-param>
<filter>
<filter-name>Seam Filter</filter-name>
<filter-class>org.jboss.seam.servlet.SeamFilter</filter-class>
<init-param>
 <param-name>createTempFiles</param-name>
 <param-value>false</param-value>
 </init-param>
</filter>

Please tell me where i am wrong!!

[ilya_shaikovsky]

so you defined

<init-param>
 <param-name>createTempFiles</param-name>
 <param-value>false</param-value>
 </init-param>

and trying to use file

if (uploadItem.isTempFile()){

..

File file = uploadItem.getFile();

it's wrong.

[panky_p]

Thanks for quick reply!!
I did changes to

<init-param>
 <param-name>createTempFiles</param-name>
 <param-value>true</param-value>
 </init-param>

but still I am getting the same behavior.

[ilya_shaikovsky]

so could you just debug your listener and check where the problem is. We have normal saving using both methods as you could see from our samples.