Problem with PAI (Process After Input) in JSPDynpage

Question

Hi All,
I am implementing a file upload functionality through JSPDynpage. When I browse the excel file and try to upload it, it gives this error :
com.sapportals.htmlb.page.PageException: Eventhandler- "upload_file" or "onUpload_file" not found!
     at com.sapportals.htmlb.page.DynPage.doProcessCurrentEvent(DynPage.java:168)
     at com.sapportals.htmlb.page.PageProcessor.handleRequest(PageProcessor.java:115)
     at com.sapportals.portal.htmlb.page.PageProcessorComponent.doContent(PageProcessorComponent.java:134)
This is my component :
public class FileUploadUtility extends PageProcessorComponent {
  public DynPage getPage(){
    return new FileUploadUtilityDynPage();
  public static class FileUploadUtilityDynPage extends JSPDynPage{
    private fileUpload fileUploadBean = null;
     protected IPortalComponentRequest request;
     protected IPortalComponentResponse response;
     protected IPortalComponentSession session;
     protected IPortalComponentContext context;
     protected IPortalComponentProfile profile;
     protected String userId;
     private final static int INITIAL_STATE = 0;   
     private final static int OUTPUT_STATE = 1;
     private final static int ERROR_STATE = 2; 
     private int state = INITIAL_STATE;
    public void doInitialization(){
          request = (IPortalComponentRequest) this.getRequest();
          session = ((IPortalComponentRequest)getRequest()).getComponentSession();
          context = request.getComponentContext();
          profile = context.getProfile();
          IUserContext userContext = request.getUser();
          userId = userContext.getUserId();
          System.err.println("berry + Getting userID " + userId);               
          fileUploadBean = new fileUpload();
          session.putValue("fileUploadBean", fileUploadBean);
          //uploadUtility();
    public void uploadUtility(){
          String mimetype;
          String resourceName;
          String repository;
          FileInputStream sourceFileInput = null;
          IPortalComponentRequest request = (IPortalComponentRequest)this.getRequest();
     /*     IWDClientUser wdUser = WDClientUser.getCurrentUser();
          IUser user = wdUser.wdUser.getSAPUser(); */
          IUser epUser=(IUser)request.getUser().getUser();
          System.err.println("epUser - " + epUser);
          ResourceContext ctx = new ResourceContext(epUser);
          repository = "/Folder1/Folder2";
          RID rid=RID.getRID(repository);
          System.err.println("getting RID :- " + rid);
          IPageContext context = PageContextFactory.createPageContext(request,response);
     //     PageContext context = PageContextFactory.createPageContext(request, response);
          Event event=context.getCurrentEvent();
          if(null!=event)
               String event_name=event.getAction();
               if(null!=event_name && event_name.trim().equalsIgnoreCase("upload_file"))
                    //FileUpload fileUpload = (FileUpload)context.getComponentForId("fileupload");
                    FileUpload fileUpload = (FileUpload)context.getComponentForId("fileupload");
                         if(null !=fileUpload && null!=fileUpload.getFile())
                                   mimetype = fileUpload.getFile().getContentType();
                                   resourceName = fileUpload.getFile().getFileName();
                                   //sourceFileInput = new FileInputStream(fileUpload.getFile().getFile().getAbsolutePath());
                                   try {
                                        sourceFileInput = new FileInputStream(fileUpload.getFile().getFile().getAbsolutePath());
                                   } catch (FileNotFoundException fnf) {
                                        System.err.print("FileNotFoundException Occured " + fnf.toString());
                                   Content content = new Content(sourceFileInput, mimetype, -1L);
                                   //IResource resource = (ResourceFactory.getInstance().getResource(rid, ctx));
                                   IResource resource = null;
                                   try {
                                        resource =(IResource) (ResourceFactory.getInstance().getResource(rid, ctx));
                                   } catch (ResourceException resexp) {
                                        System.err.print("Resource Exception Occured for IResource" + resexp.toString());                          }
                                   ICollection aCollection=(ICollection)resource;
                                   //IResource newResource = aCollection.createResource(resourceName, null, content);
                                   try {
                                        IResource newResource = (IResource) aCollection.createResource(resourceName, null, content);
                                   } catch (NotSupportedException e2) {
                                        System.err.print("Not Supported Exception Occured" + e2.toString());
                                   } catch (AccessDeniedException e2) {
                                        System.err.print("Access Denied Exception Occured" + e2.toString());
                                   } catch (ResourceException e2) {
                                        System.err.print("Resource Exception Occured for ICollection" + e2.toString());      
                                   }//end of catch
                    }//end of innermost if
          }//end of 2nd if
     }//end of 1st If
}// end of uploadUtil
    public void doProcessAfterInput() throws PageException {
          uploadUtility();
    public void doProcessBeforeOutput() throws PageException {
      this.setJspName("File_Upload.jsp");
Kindly help with expert suggestions :

Answer 1

I put this
public void onUpload_file (Event event) {
          uploadUtility();
In my FileUploadUtilityDynPage.java and its still throwing the same error.
{0}#1#com.sapportals.htmlb.page.PageException: Eventhandler- "upload_file" or "onUpload_file" not found!
     at com.sapportals.htmlb.page.DynPage.doProcessCurrentEvent(DynPage.java:168)
     at com.sapportals.htmlb.page.PageProcessor.handleRequest(PageProcessor.java:115)
     at com.sapportals.portal.htmlb.page.PageProcessorComponent.doContent(PageProcessorComponent.java:134)
I've also imported import com.sapportals.htmlb.event.*;
No relief!!