Kitsunebi: Tomcat Debug Filter

LogFilter.java

package filters;


import java.io.IOException;
import java.util.Enumeration;
import java.util.logging.Logger;

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;
import javax.servlet.http.HttpSession;

public class LogFilter implements Filter {

    Logger logger = Logger.getLogger("com.kitsunebi");

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

        HttpServletRequest req = (HttpServletRequest) request;
        
        logger.info("URI :" + req.getRequestURI());
        logger.info("Method :" + req.getMethod());
        
        Enumeration<String> paramNames = req.getParameterNames();
        while (paramNames.hasMoreElements()) {
            String key = paramNames.nextElement();
            logger.info("Request parameter :" + key + " = " + req.getParameter(key));
        }
        Enumeration<String> attrNames = req.getAttributeNames();
        while (attrNames.hasMoreElements()) {
            String key = attrNames.nextElement();
            logger.info("Request attribute :" + key + " = " + req.getAttribute(key));
        }
        HttpSession session = req.getSession(false);
        if (session == null) {
            logger.info("No HttpSession instance.");
        } else {
            Enumeration<String> sessAttrNames = session.getAttributeNames();
            while (sessAttrNames.hasMoreElements()) {
                String key = sessAttrNames.nextElement();
                logger.info("Session attribute :" + key + " = " + session.getAttribute(key));
            }
        }
        chain.doFilter(request, response);
    }

    @Override
    public void destroy() {
    }

    @Override
    public void init(FilterConfig arg0) throws ServletException {
    }
}