package org.appfuse.webapp;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
public class MessageFilter implements Filter {
public void doFilter(ServletRequest req, ServletResponse res,
FilterChain chain)
throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) req;
// grab messages from the session and put them into request
// this is so they're not lost in a redirect
Object message = request.getSession().getAttribute("message");
if (message != null) {
request.setAttribute("message", message);
request.getSession().removeAttribute("message");
}
chain.doFilter(req, res);
}
public void init(FilterConfig filterConfig) {
}
public void destroy() {
}
}