servlet3,过滤器没有执行，


import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;import com.gwtjs.model.User;/**
 * Created by IntelliJ IDEA.
 * User: Administrator
 * Date: 11-4-1
 * Time: 下午3:20
 * To change this template use File | Settings | File Templates.
 */
@WebFilter(filterName="adminFilter",urlPatterns = {"/management"})
public class AdminFilter implements Filter {    public void init(FilterConfig filterConfig) throws ServletException {
        System.out.println("Filter 'User' configured successfully");
    }    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        User user = (User) request.getSession().getAttribute("login");        String contextPath = request.getContextPath();
        String webRoot = request.getContextPath() + request.getScheme() + "://" + request.getServerName() + ";" + request.getServerPort() + contextPath + "/login.htm";
        if (null == user)
            response.sendRedirect("/login.htm");
        else
            filterChain.doFilter(servletRequest, servletResponse);
    }    public void destroy() {
        //To change body of implemented methods use File | Settings | File Templates.
    }
}
没有跳转，请高人指点