Struts and XSL Transformation

[LuckyKoen]

I have a servet that transforms an xml and xsl file into a new html page. This new html page is generated as an output stream and shown in my browser. I want to use this servlet in a struts application and I have placed my transformation code in an action method.

It seems however that the execute method always needs to return an ActionForward. Since my code generates a new html page right after the transformation I am a bit unsure what to do with the return ActionForward. The result of my transformation is shown correctly but I still get an error : Cannot forward after response has been committed.

Here is the code :

public ActionForward execute (  		
        ActionMapping mapping,
        ActionForm form,
        HttpServletRequest request,
        HttpServletResponse response) {
      
        
	try {
		PrintWriter out;
		out = response.getWriter();
		
	        File xmlFile = new File ("url...");
	        File xslFile = new File ("url...");
	        
	        Transformer t = null;
	        TransformerFactory tFactory = TransformerFactory.newInstance();
	        
	        Source xmlSource = new StreamSource(xmlFile);
	        Source xslSource = new StreamSource(xslFile);
        
		t = tFactory.newTransformer(xslSource);    
		StreamResult result = new StreamResult(out);
			
		t.transform(xmlSource, result);		
	}
	
	catch (TransformerException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}  
		   
	catch (IOException e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	}
	return mapping.findForward(FORWARD_calendar);
}

Is there a way to tell struts that I don't want to forward anything or do I need to use something else than a StreamResult ?

 

[venur]

Hi,

You can return null, but before that just make sure you have send the response back;

Cheers
Venu

 

[LuckyKoen]

Thanks for the quick reply Venur, I don't get that error anymore. Struts are new to me though and I am still wondering if I am "supposed" to program a struts application like this. It doesn't exactly look like a clean way to fix things.

 

[venur]

Hi,

I dont think its fixing of things, I think this is how you do the filedownload and upload in sturts.

Hope this link will help you

http://www.techmag.biz/?q=node/32/print

Cheers
Venu