StaticContentFilter.java

package ${package}.web.util;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

/**
 * Passes static content serving to container's default servlet
 */
public class StaticContentFilter implements Filter {
    private static final String DEFAULT_SERVLET_NAME = "default";
    private ServletContext servletContext;

    /**
     * {@inheritDoc}
     */
    public void destroy() {
    }

    /**
     * {@inheritDoc}
     */
    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
        servletContext.getNamedDispatcher(DEFAULT_SERVLET_NAME).forward(req, resp);
    }

    /**
     * {@inheritDoc}
     */
    public void init(FilterConfig config) throws ServletException {
        servletContext = config.getServletContext();
    }

}