session超过时间自动跳转到登录页面。要求请求的每个url都要进行拦截,当然,js,css这些东西除外。
spring-mvc.xml
<!-- 拦截器配置 --> <mvc:interceptors> <!-- session超时 --> <mvc:interceptor> <mvc:mapping path="/*/*"/> <bean class="com.ziyou.platform.interceptor.SessionTimeoutInterceptor"> <property name="allowUrls"> <list> <!-- 如果请求中包含以下路径,则不进行拦截 --> <value>/login</value> <value>/js</value> <value>/css</value> <value>/image</value> <value>/images</value> </list> </property> </bean> </mvc:interceptor> </mvc:interceptors> <!-- 自定义异常处理,SimpleMappingExceptionResolver这个类可以是个空类,但是要写,方便在java代码里面使用 --> <bean id="exceptionResolver" class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver"> <property name="exceptionMappings"> <props> <prop key="com.ziyou.platform.interceptor.SessionTimeoutException">redirect:/login</prop> </props> </property> </bean>
/** * 处理session超时的拦截器 */ public class SessionTimeoutInterceptor implements HandlerInterceptor{ public String[] allowUrls;//还没发现可以直接配置不拦截的资源,所以在代码里面来排除 public void setAllowUrls(String[] allowUrls) { this.allowUrls = allowUrls; } @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object arg2) throws Exception { String requestUrl = request.getRequestURI().replace(request.getContextPath(), ""); System.out.println(requestUrl); if(null != allowUrls && allowUrls.length>=1) for(String url : allowUrls) { if(requestUrl.contains(url)) { return true; } } User user = (User) request.getSession().getAttribute("user"); if(user != null) { return true; //返回true,则这个方面调用后会接着调用postHandle(), afterCompletion() }else{ // 未登录 跳转到登录页面 throw new SessionTimeoutException();//返回到配置文件中定义的路径 } } @Override public void afterCompletion(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, Exception arg3) throws Exception { } @Override public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1, Object arg2, ModelAndView arg3) throws Exception { } }
另外,你要在controller中设置session的超时时间 request.getSession().setMaxInactiveInterval(20);//20秒 request.getSession().setAttribute("user", user);