/**
* Init session filter
*
* @param filterConfig A filter configuration object used by a servlet container to pass
* information to a filter during initialization.
*/
@Override
public void init(FilterConfig filterConfig) throws ServletException {
// 初始化系统信息
Constants.setSystemInfo(
filterConfig.getServletContext().getRealPath(""),
filterConfig.getServletContext().getContextPath(),
filterConfig.getInitParameter("JS_Version"),
null);
}
/**
* Do session filter
*
* @param request HttpServletRequest
* @param response ServletResponse
* @param chain A FilterChain is an object provided by the servlet container to the developer
* giving a view into the invocation chain of a filtered request for a resource. Filters use
* the FilterChain to invoke the next filter in the chain, or if the calling filter is the
* last filter in the chain, to invoke the resource at the end of the chain.
*/
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
// Instance HttpServletRequest
HttpServletRequest httpServletRequest = (HttpServletRequest) request;
// Get submit URL
String url = httpServletRequest.getRequestURI();
// Print URL
if (logger.isDebugEnabled()) {
logger.log(ComLogger.DEBUG, url);
}
// 过滤/page/ 路径.jsp|.html
if (url.matches("^(\\w|\\W)*\\.(jsp|html)$")) {
HttpSession session = httpServletRequest.getSession();
UserInfo userInfo = (UserInfo) session.getAttribute(Constants.USER_INFO_SESSION);
if (userInfo == null || "".equals(userInfo)) {
session.invalidate();
if (logger.isDebugEnabled()) {
logger.log(ComLogger.DEBUG, "SESSION过期,url:" + url);
}
if (url.matches("^.+(/page/|/main\\.html).*$")) {
String QueryString = httpServletRequest.getQueryString();
if ("hash=".equals(QueryString) || QueryString == null || "".equals(QueryString)) {
QueryString = "";
} else {
QueryString = "?" + QueryString;
}
httpServletRequest.setAttribute(
"url", url.substring(Constants.getProjectUrl().length() + 1) + QueryString);
httpServletRequest
.getRequestDispatcher("/login.jsp")
.forward(httpServletRequest, response);
} else {
HttpServletResponse newResponse = (HttpServletResponse) response;
newResponse.setHeader("sessiontimeout", "1");
// newResponse.setStatus(998);
newResponse.setContentType("text/plain;charset=UTF-8");
newResponse.getWriter().write("{success:false,msg:\"您的登陆信息已过期，请先登录。\"}");
}
return;
}
}
chain.doFilter(httpServletRequest, response);
}