Save rendered JSF page into HTML

Question

Hi,
We have a requirement wherein, a rendered JSF (i.e. JSP) page needs to be saved in HTML form on server side.
One option is to write filter which will process the response and write to File. But in this case filter will intercept all request, while in my case, I want to generate HTML only when user click on particular button. For rest of the request it should bypass this filter.
Apart from filter, can we have some API which will do this?
Thanks
Chintan

Answer 1

Is the page contents idempotent or not? If it is, just use java.net.URLConnection to query the same page. If not, then you need to do more work. You need to clone the response stream before it is been sent to the client and store it somewhere. You can do it using a Filter which replaces the HttpServletResponse with your own HttpServletResponseWrapper implementation.