Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package br.vschettino.forum.interceptor; /** * * @author Vinicius Schettino */ import br.vschettino.forum.model.Usuario; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.web.servlet.HandlerInterceptor; import org.springframework.web.servlet.ModelAndView; public class AuthInterceptor implements HandlerInterceptor { @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { Usuario visitante = (Usuario) request.getSession().getAttribute("usuario"); if (request.getRequestURI().contains("/login") || request.getRequestURI().contains("/logout")) { return true; } if (visitante == null) { response.sendRedirect(request.getContextPath() + "/web/login?unauthorized=true"); return false; } return true; } @Override public void postHandle(HttpServletRequest hsr, HttpServletResponse hsr1, Object o, ModelAndView mav) throws Exception { System.out.println("Post-handle"); } @Override public void afterCompletion(HttpServletRequest hsr, HttpServletResponse hsr1, Object o, Exception excptn) throws Exception { System.out.println("After-completion"); } }