Bonjour
	
		
			
			
				
					
 Envoyé par 
javadoc
					
				 
				public void forward(ServletRequest request,
                    ServletResponse response)
             throws ServletException,
                    java.io.IOException
    Forwards a request from a servlet to another resource (servlet, JSP file, or HTML file) on the server. This method allows one servlet to do preliminary processing of a request and another resource to generate the response.
    For a RequestDispatcher obtained via getRequestDispatcher(), the ServletRequest object has its path elements and parameters adjusted to match the path of the target resource.
    forward should be called before the response has been committed to the client (before response body output has been flushed). If the response already has been committed, this method throws an IllegalStateException. Uncommitted output in the response buffer is automatically cleared before the forward.
    The request and response parameters must be either the same objects as were passed to the calling servlet's service method or be subclasses of the ServletRequestWrapper or ServletResponseWrapper classes that wrap them.
    Parameters:
        request - a ServletRequest object that represents the request the client makes of the servlet
        response - a ServletResponse object that represents the response the servlet returns to the client
    Throws:
        ServletException - if the target resource throws this exception
        java.io.IOException - if the target resource throws this exception
        java.lang.IllegalStateException - if the response was already committed
			
		 
	 
 Tu es dans une JSP, la (ou un bout de la) réponse a déjà été envoyé au client.
Essaie avec ce code en haut de la page (Avant les includes et avant les espaces).
	
	<%@ page autoFlush="false" %>
 Je ne suis pas sûr que ça marche mais qui ne tente rien n'a rien.
bon courage.
						
					
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