Dynamsoft TWAIN Products

I tried Dynamic Web Twain Plugin and ScanToFile sources. They work well on Windows, but I got IndexOutOfBoundsException on Ubuntu. Any suggestion?

Currently, Dynamic Web TWAIN doesn't support Ubuntu as a client. I've added your request to our feature list for future consideration.

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I was not clear. I tried with Windows as server and Windows as client. It works. But if I try with Ubuntu as server and Windows as client, I get this exception

It seems that in SaveToFile.jsp there are some problems with these lines:

int startPos = ((file.substring(0, pos)).getBytes()).length;
int endPos = ((file.substring(0, boundaryLocation)).getBytes()).length;

probably because of different charset.

I replaced all code of jsp with new code, based con Apache Commons FileUpload:

---- BEGIN
String contentType = request.getContentType();
if ((contentType != null) && (contentType.indexOf("multipart/form-data") >= 0)) {

try {
List items = new ServletFileUpload(new DiskFileItemFactory()).parseRequest(request);

for (int i=0;i<items.size();i++) {
FileItem item = (FileItem)items.get(i);
String fieldname = item.getFieldName();
String filename = FilenameUtils.getName(item.getName());

InputStream filecontent = item.getInputStream();

File f=new File("/home/andrea/jboss-4.0.3SP1/temp/" +filename);
OutputStream outS=new FileOutputStream(f);
byte buf[]=new byte[1024];
int len;
while((len=filecontent.read(buf))>0)
outS.write(buf,0,len);
outS.close();
filecontent.close();
}
} catch (FileUploadException e) {
throw new ServletException("Cannot parse multipart request.", e);
} catch (IOException e){
throw new ServletException("Cannot write file", e);
}
}

---- END

Now, it works and the file is saved correctly, but action page returns "Http process error" and property "HTTPPostResponseString" is empty. Uploading is by method "HTTPUploadAllThroughPostAsPDF".
Any idea?

You may get such a problem when the server returns " ". To better pinpoint the cause of the problem, shall we have an online meeting? If it is convenient for you, you can contact our support team via Live Help first:
http://www.dynamsoft.com/Support/livehelp.aspx