@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
throws IOException, ServletException {
HttpServletRequest req = (HttpServletRequest) request;
long start = 0;
if (enabled && filter(req)) {
start = System.currentTimeMillis();
}
chain.doFilter(request, response);
if (enabled && filter(req)) {
long end = System.currentTimeMillis();
User user = OnlineUserService.getUser(req.getSession().getId());
ProcessTime logger = new ProcessTime();
logger.setUsername(user.getUsername());
logger.setUserIP(req.getRemoteAddr());
try {
logger.setServerIP(InetAddress.getLocalHost().getHostAddress());
} catch (UnknownHostException ex) {
LOG.error("保存日志出错(Error in saving log)", ex);
}
logger.setAppName(SystemListener.getContextPath());
String resource = req.getRequestURI().replace(logger.getAppName(), "");
logger.setResource(resource);
logger.setStartTime(new Date(start));
logger.setEndTime(new Date(end));
logger.setProcessTime(end - start);
LogQueue.addLog(logger);
}
}
protected void genernateCaptchaImage(
final HttpServletRequest request, final HttpServletResponse response) {
ServletUtils.setDisableCacheHeader(response);
response.setContentType("image/png");
ServletOutputStream out = null;
try {
out = response.getOutputStream();
String captchaId = request.getSession(true).getId();
BufferedImage challenge =
(BufferedImage) captchaService.getChallengeForID(captchaId, request.getLocale());
// String writerNames[] = ImageIO.getWriterFormatNames();
ImageIO.write(challenge, "png", out);
out.flush();
} catch (IOException | CaptchaServiceException e) {
log.error("生成验证码出错", e);
} finally {
try {
out.close();
} catch (IOException e) {
log.error("生成验证码出错", e);
}
}
}