package com.fr.stable.fun;import com.fr.stable.fun.mark.Layer;import com.fr.stable.fun.mark.Mutable;import com.fr.stable.web.RequestCMDReceiver;/*** Created by richie on 16/8/9.* 请求拦截器,通过传递op和cmd进行内置请求的拦截*/public interface RequestInterceptor extends Mutable, RequestCMDReceiver, Layer {String MARK_STRING = "RequestInterceptor";int CURRENT_LEVEL = 1;}

package com.fr.stable.web;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;/*** Created by richie on 16/8/9.* 请求接收器*/public interface RequestCMDReceiver {/*** cmd参数值* @return cmd参数值*/String getCMD();/*** 执行* @param req http请求* @param res http应答* @param sessionID 会话ID* @throws Exception 处理失败则抛出异常*/void actionCMD(HttpServletRequest req, HttpServletResponse res,String sessionID) throws Exception;/*** 执行请求* @param req http请求* @param res http响应* @throws Exception 处理失败则抛出异常*/void actionCMD(HttpServletRequest req, HttpServletResponse res) throws Exception;}

<extra-core><RequestInterceptor class="com.fr.plugin.xxx.youclassname" op="fs_load" cmd="login" pid="com.fr.plugin.xxx.name"/></extra-core>

@Overridepublic void actionCMD(HttpServletRequest req, HttpServletResponse res)throws Exception {String username = WebUtils.getHTTPRequestParameter(req, Constants.FR_USERNAME);String heartBeat = WebUtils.getHTTPRequestParameter(req, "__heartbeat__");if(ComparatorUtils.equals(heartBeat, "__active__")){if(StringUtils.isEmpty(username)){username = WebUtils.getHTTPRequestParameter(req, "__username__");if(!StringUtils.isEmpty(username)){req.getSession(true).removeAttribute("__username__");}}//如果用户名不为空且已登录的列表中不包含该用户名说明已经被踢下线if(!StringUtils.isEmpty(username) && !log.containsKey(username)){writeResult(res,false);return ;}//如果在已登录的列表中找到了该用户名的记录，但是ID不匹配也说明被踢下线了if(log.containsKey(username)){String crtUUID = WebUtils.getHTTPRequestParameter(req, "_sessionid_");SingleLoginBean logBean = log.get(username);String oldId = logBean.getId();if(!ComparatorUtils.equals(crtUUID,oldId)){writeResult(res,false);return;}else{//将当前时刻设置为最近活跃时刻logBean.setWait4removeTime(new Date().getTime());}}writeResult(res,true);//登出太久不活跃的用户 30S以上checkAllUser();return;}super.actionCMD(req, res);}

protected void signOnSuccess(HttpServletRequest req, HttpServletResponse res, PrintWriter writer, String url) throws IOException, JSONException {String username = WebUtils.getHTTPRequestParameter(req, Constants.FR_USERNAME);String uuid = req.getSession(true).getId();SingleLoginBean logBean = new SingleLoginBean(uuid,req,res,req.getSession(true));logBean.setWait4removeTime(new Date().getTime());//后面的用户登录成功后需要先将旧的用户转移到等待删除的列表中remove4logout(req);//将新登录的用户添加到已经登录的用户中log.put(username, logBean);if ("true".equals(WebUtils.getHTTPRequestParameter(req, ParameterConsts.__REDIRECT__))) {res.sendRedirect(url);} else {writer.print(JSONObject.create().put("url", url));}}gf =

var askServer4Active = function(){var sessionid = getCrtSessionid();if( sessionid == "" || sessionid == null ){return ;}var url = FR.servletURL+"?op=fs_load&cmd=login&__heartbeat__=__active__&_sessionid_="+sessionid;FR.ajax({  url: url,  type: "POST",  dataType:"JSON",success: function(msg){  if(!msg.success){if(active){active = false;clearInterval(timer);FR.Msg.alert("警告","您的账号已在其他客户端登陆！\n如非本人授权，请及时修改密码！\n3秒后页面将跳转至登陆页！");setTimeout(function(){document.location = FR.servletURL+"?op=fs";},3000);}}else{active = true;}}  });};