Question

I have a JSF (IceFaces 1.8.2) website. I need the following functionality: When a specific JSF page is displayed, I would like to store its HTML code in a database. I tried to use Servlet filters to capture the code (using a HttpResponseWrapper object as it is written on the SUN webbage and in a lot of tutorials), but the response was always empty. Can somebody help me?

Here is the doFilter:

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
    throws IOException, ServletException {  

    Wrapper responseWrapper = new Wrapper((HttpServletResponse)response);
    chain.doFilter(request, responseWrapper);
    //I just want the output on stdout at the moment...
    System.out.println(responseWrapper.toString());
    PrintWriter out = response.getWriter();
    out.write(responseWrapper.toString()); 
    }

And here is the Wrapper:

public class Wrapper extends HttpServletResponseWrapper{
    private CharArrayWriter writer;
    public Wrapper(HttpServletResponse response){
        super(response);
        writer = new CharArrayWriter();
}

public PrintWriter getWriter(){
    return (new PrintWriter(writer));
}

public String toString(){
    return writer.toString();
}

public char[] toCharArray(){
    return (writer.toCharArray());
 }
}

And the web.xml:

<filter>
  <filter-name>MyFilter</filter-name>
  <filter-class>foo.myfilter</filter-class>
</filter> 
<filter-mapping>
  <filter-name>MyFilter</filter-name>
  <url-pattern>*.iface</url-pattern>
</filter-mapping>

Answer 1

Perhaps JSF sends a redirect, or writes the response using response.getOutputStream()? Try setting break points in all methods of HttpServletResponseWrapper to discover which methods JSF invokes.