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项目需要，要求登录用户非空闲状态，不可退出。说白了就是，在退出的时候增加逻辑判断，如果状态为非空，就不让其退出。

           
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而框架提供过滤器链如下：

filter代码如下

/** * 非空闲状态下，用户不能退出 * Created by  on 2017/11/7. */public class CloudqLogoutFilter extends GenericFilterBean {
       private org.slf4j.Logger logger = LoggerFactory.getLogger(getClass());    private ObjectMapper mapper = new ObjectMapper();    private String logoutUrl;    @Autowired    WindowCurrentStateMapper windowCurrentStateMapper    @Override    protected void initFilterBean() throws ServletException {        super.initFilterBean();        mapper.setPropertyNamingStrategy(new PropertyNamingStrategy.UpperCamelCaseStrategy());    }    @Override    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {        HttpServletRequest request = (HttpServletRequest) servletRequest;        HttpServletResponse response = (HttpServletResponse) servletResponse;        if (this.requiresLogout(request, response) && SecurityContextHolder.getContext() != null                && SecurityContextHolder.getContext().getAuthentication() != null) {            AuthUserDetails authUser = (AuthUserDetails) SecurityContextHolder.getContext().getAuthentication().getPrincipal();            ClientEmp clientEmp = authUser.getClientEmpUser();            Integer empId = clientEmp.getEmpId();            Integer branchesId = clientEmp.getBranchesId();            List
   
     windowEmpList = windowCurrentStateMapper.selectbyEmpId(branchesId, empId);            if (windowEmpList != null && windowEmpList.size() > 0) {                for (WindowsParticulars windowEmp : windowEmpList) {                    if (Constants.WINDOW_CURRENT_STATE_CALL.equals(windowEmp.getCurrentState()) || Constants.WINDOW_CURRENT_STATE_IN_PROCESS.equals(windowEmp.getCurrentState())) {                        logger.info("您的账号id='{}',name='{}',非空闲状态下，用户不能退出", clientEmp.getEmpId(), clientEmp.getEmpName());                        printErrorMsg(servletResponse);                       return;                    }                }            }        }        filterChain.doFilter(servletRequest, servletResponse);    }    private void printErrorMsg(ServletResponse servletResponse) {        servletResponse.setContentType("application/json");        servletResponse.setCharacterEncoding("UTF-8");        PrintWriter out = null;        try {            out = servletResponse.getWriter();            Result result = new Result(StatusCode.ERROR_WINDOW_NOT_HANDLE, null, "非空闲状态下，用户不能退出");            out.write(mapper.writeValueAsString(result));        } catch (IOException e) {            e.printStackTrace();        } finally {            if (out != null) {                out.close();            }        }    }    /**     * 判断请求路径是否是退出     *     * @param request     * @param response     * @return     */    private boolean requiresLogout(HttpServletRequest request, HttpServletResponse response) {        if (StringUtils.isBlank(logoutUrl))            return false;        String path = request.getRequestURI();        return path.contains(logoutUrl);    }    public void setLogoutUrl(String logoutUrl) {        this.logoutUrl = logoutUrl;    }}
   

问题搞定！