Hi.

I have to update a file on the server where a JSP file is .

To read the previous value, I use an InputStream, and close it.
I then do the update in my object representing the data file.
I use an OutputStream, do the flush, close the stream, but the file still
stay unupdated, and no error is throwed

Can someone give me a solution ?

Jerome

======================

<%@ page language="java" %>
......
<%@ page import="......." %>
<%
 String                 l_szJalonFileName        =
"http://the_server_address/data.xml";
java.net.URL           l_fileURL                = null;
JAXBContext            l_jc                     = null;
DataClass l_data            = null;

// Read the old value
try
{
    l_jc = JAXBContext.newInstance("data.jaxb");
    Unmarshaller unmarshaller = l_jc.createUnmarshaller();
    l_fileURL = new java.net.URL(l_szJalonFileName);
    java.net.URLConnection l_connection = l_fileURL.openConnection();
    java.io.InputStream l_is = l_connection.getInputStream();
    l_data = (DataClass ) unmarshaller.unmarshal(l_is);
    l_is.close();
}
   catch(Exception e)
   {
    // -- study error messages
   }

   // Update the value in the l_data object

   // Write the new value in the previous file
   try
   {
    Marshaller marshaller = l_jc.createMarshaller();
    java.net.URLConnection l_connection = l_fileURL.openConnection();
    l_connection.setDoOutput(true);
    java.io.OutputStream l_os = l_connection.getOutputStream();
    marshaller.marshal(l_sessionList, l_os);
    l_os.flush();
    l_os.close();
}
   catch(Exception e)
   {
    // -- study error messages
   }
%