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  1. #1
    Sencha User
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    Jun 2011
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    Kris Sony is on a distinguished road

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    Default File Uploading

    File Uploading


    Hi

    I know there are other posts on this but I just can't get this working. Any clues?

    The problem seem is this is false
    boolean isMultipart = ServletFileUpload.isMultipartContent(request);

    Its like the encoding is not multipart


    FormPanel
    Code:
    FormPanel formPanel = new FormPanel();
    		formPanel.setHeading(TITLE);
    		formPanel.setFrame(true);
    		formPanel.setWidth(350);
    		formPanel.setEncoding(Encoding.MULTIPART);
    		formPanel.setMethod(Method.POST);
    		formPanel.setAction(GWT.getModuleBaseURL()+"upgradePackageServlet ");
    		
    		
    	    fileUpload = new FileUploadField();
    	    fileUpload.setName("Select upgrade package");
    	    fileUpload.setAllowBlank(false);
    	    
    	    
    	    formPanel.add(fileUpload);
       
    	    
    	    Button uploadButton = new Button("Upload");
    	    uploadButton.addClickHandler(new UploadFileClickHandler());
    	    formPanel.add(uploadButton);
    UploadFileClickHandler
    Code:
    private class UploadFileClickHandler implements ClickHandler {
    
    		@Override
    		public void onClick(ClickEvent event) {
    			final String fileName = fileUpload.getValue();
    			
    			if (fileName.isEmpty()) {
    				Window.alert("Select a file");
    			} else {
    				upgradePackageService.addPackage(fileName, new AsyncCallback<Void>() {
    					
    					@Override
    					public void onSuccess(Void result) {
    						Window.alert("Hunky Dorey " + fileName);
    						
    					}
    					
    					@Override
    					public void onFailure(Throwable t) {
    						Window.alert("Error uploading file " + t);
    						
    					}
    				});
    			}
    		}
    	}
    Code:
    public class UpgradePackageProxyServiceImpl extends RemoteServiceServlet implements UpgradePackageProxyService {
    
    @Override
    	public void addPackage(String fileName) {
    		HttpServletRequest request = getThreadLocalRequest();		
    		
    		boolean isMultipart = ServletFileUpload.isMultipartContent(request);
    		if (isMultipart) {
    			FileItemFactory factory = new DiskFileItemFactory();
    			ServletFileUpload upload = new ServletFileUpload(factory);
    			      
    			try {
    				List items = upload.parseRequest(request);
    				// Process the uploaded items
    				Iterator iter = items.iterator();
    				while (iter.hasNext()) {
    					FileItem item = (FileItem) iter.next();
    				 
    					if (item.isFormField()) {
    						System.out.println(item.getFieldName());
    						System.out.println(item.getName());
    						System.out.println(item.getContentType());
    						System.out.println(item.isInMemory());
    						System.out.println(item.getSize());
    					} else {
    						fileName = item.getName();
    						if (fileName != null && !fileName.equals("")) {
    							fileName = FilenameUtils.getName(fileName);
    							File uploadedFile = new File("rootDirectory" + fileName);
    							try {
    								item.write(uploadedFile);
    								File newfile=new File(uploadedFile.getName());
    								uploadedFile.renameTo(newfile);
    								System.out.println(newfile.getName());				      
    							} catch (Exception e) {
    								e.printStackTrace();
    							}
    						}
    					}
    				}
    			} catch (FileUploadException e) {
    				e.printStackTrace();
    			}
    		}
        }
    
    }

  2. #2
    Sencha User
    Join Date
    Jun 2011
    Posts
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    Kris Sony is on a distinguished road

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    Default


    I finally worked it out.

    You need to set the formAction to a normal servlet
    formPanel.setAction("https://localhost/upload");
    formPanel.submit();


    The servlet should be a normal HttpServlet and override the doPost

    to easy