Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
if (handler instanceof DefaultServletHttpRequestHandler) {
return true;
}
if (logger.isInfoEnabled()) {
System.out.println(handler.getClass().getName() + "==>" + request.getRequestURL());
}
/*String requestType = request.getHeader("X-Requested-With");
String path = request.getContextPath();*/
HttpSession session = request.getSession();
if (!isVisitFrequency(session, response)) {
return false;
}
//判断session
if (null == SessionUtil.getUser()) {
if (isIgnoreAuthority(request, response)) {
return true;
}
这里的作用是，基于ajax的请求时，如果session过期后的响应！
response.setHeader("sessionstatus", "timeout");
response.setStatus(518);
// response.sendError(518, "session timeout.");
response.setCharacterEncoding("utf-8");
response.getWriter().write("由于您长时间没有操作,会话已失效,请重新登录!");
response.getWriter().close();
return false;
}
//静态文件
if (handler instanceof ResourceHttpRequestHandler) {
if (logger.isInfoEnabled()) {
logger.info("ResourceHttpRequestHandler");
}
return true;
}
// 后台请求
if (handler instanceof HandlerMethod) {
HandlerMethod handlerMethod = (HandlerMethod) handler;
if (handlerMethod.getBean() instanceof BasicErrorController) {
if (logger.isInfoEnabled()) {
logger.info("**************BasicErrorController **********");
}
return true;
}
// 为Control清除参数
BaseController bc = (BaseController) handlerMethod.getBean();
bc.clearParamMap();
String className = handlerMethod.getBean().getClass().getSimpleName();
String method = handlerMethod.getMethod().getName();
String auth = className + "." + method;
if (logger.isInfoEnabled()) {
if (logger.isInfoEnabled()) {
logger.info("访问权限：" + auth);
}
}
//特殊Controller 放行
if ("XXXXXControl".equalsIgnoreCase(className)) {
return true;
}
if (!SessionUtil.getUser().hasAuth(auth)) { // 检查有无操作权限
response.setHeader("statusText", "Unauthorized");
response.setStatus(401);
//response.sendError(401 , "no auth.");
response.setCharacterEncoding("utf-8");
response.getWriter().write("您没有相关功能的操作权限，请与系统管理员联系！");
// response.getWriter().write("您没有相关功能的操作权限!");
response.getWriter().close();
return false;
}
}
return true;
}
// 防无限请求或刷新
private boolean isVisitFrequency(HttpSession session, HttpServletResponse response) throws Exception {
Long period_time = 5 * 1000L;
int period_count = 10;
if (session.getAttribute("lastVisitTime") == null) {
session.setAttribute("lastVisitTime", new Long[]{System.currentTimeMillis(), 0L});
return true;
} else {
Long[] data = (Long[]) session.getAttribute("lastVisitTime");
long now = System.currentTimeMillis();
if (data[1] == -1) {
if (now - data[0] > period_time) {
data[0] = now;
data[1] = 0L;
} else {
response.setHeader("statusText", "Unauthorized");
response.setStatus(401);
//response.sendError(401 , "no auth.");
response.setCharacterEncoding("utf-8");
response.getWriter().write("您访问速度过快，请等待" + Math.round(5 - (now - data[0]) / 1000) + "秒后继续访问!");
// response.getWriter().write("您没有相关功能的操作权限!");
response.getWriter().close();
return false;
}
} else {
if (now - data[0] < period_time) {
data[1]++;
} else {
data[0] = now;
data[1] = 0L;
}
if (data[1] > period_count) { // 访问不能超过5次
data[1] = -1L;
}
}
}
return true;
}
// 防无限请求或刷新
/**
* @param request
* @return
* @throws Exception
*/
private boolean isIgnoreAuthority(HttpServletRequest request, HttpServletResponse response) throws Exception {
String _ignore_authority_key = request.getParameter(SessionUtil.IGNORE_AUTHORITY);
if (StringUtils.isNotBlank(_ignore_authority_key)
/* && _ignore_authority_key.equalsIgnoreCase(SessionUtil.IGNORE_AUTHORITY_KEY)*/) {
String userName = null;
try {
userName = AESUtil.aesDecrypt(_ignore_authority_key, SessionUtil.AES_SECRET_KEY);
} catch (Exception ex) {
//ex.printStackTrace();
System.out.println("解密出错 ：" + ex.getMessage());
userName = "admin";
}
System.out.println("*********isIgnoreAuthority*********** user = " + userName);
HashMap<String, Object> paramMap = new HashMap<String, Object>();
SysUser loginUser = null;
HttpSession session = request.getSession();
List<Menu> menus = null;
List<ReportStore> storeAuths = null;
MenuService menuService = (MenuService) SpringContextUtil.getBean("menuService");
UserService userService = (UserService) SpringContextUtil.getBean("userService");
//普通用户登录
paramMap.put("user_name", userName);
loginUser = userService.getUserByName(paramMap);
if (loginUser == null) {
loginUser = new SysUser();
loginUser.setUserName("100000");
loginUser.setLoginPassword("******");
loginUser.setNickName("超级管理员");
loginUser.setSingleLogin(Constants.STATUS_YES);//超级管理员只能单点登录
paramMap.clear();
paramMap.put("parentId", "0");
menus = menuService.getMenuStructure(paramMap);
storeAuths = userService.queryUserStoreAuths(null);
} else {
paramMap.clear();
paramMap.put("user_id", loginUser.getId());
paramMap.put("flag", Constants.STATUS_YES);
storeAuths = userService.queryUserStoreAuths(paramMap);
//用户拥有的 菜单和报表权限
List<String> userMenuAuths = menuService.queryUserMenuAuths(paramMap);
session.setAttribute(SessionUtil.REPORT_MENU_AUTHS, userMenuAuths);
paramMap.clear();
paramMap.put("parentId", "0");
menus = menuService.getMenuStructure(paramMap);
//普通用户登录要 过滤权限
//SessionUtil.filterUserMenus(menus);
SessionUtil.filterUserMenuOrReports(menus);
}
//设置用户菜单和访问权限到Sysuser中
loginUser.setMenuList(menus);
//设置用户单店权限到Sysuser中
loginUser.setStoreAuths(storeAuths);
//用户菜单
session.setAttribute(SessionUtil.MENU, menus);
//用户单店
session.setAttribute(SessionUtil.STORE, storeAuths);
//用户信息
session.setAttribute(SessionUtil.LOGIN_USER, loginUser);
//最新的登录时间
session.setAttribute(SessionUtil.LAST_LOGIN_TIME, DateConvertUtil.generateDateTime(new Date(), DateConvertUtil.TIMESTATMP_FORMAT));
// 设置返回 连接 URLEncoder.encode(URLDecoder.decode(request.getCookies()[2].getValue()))
SessionUtil.addCookie("backUrl", URLDecoder.decode("../../hxnc/index"));
return true;
}
return false;
}
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