springboot关于拦截器强转类型错误

springboot关于拦截器强转类型错误

interceptor

springboot关于拦截器 代码片.

// An highlighted block
//目标方法执行之前
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        HandlerMethod handlerMethod;
        if (errorCodeList.contains(response.getStatus())){
            /*request.getRequestDispatcher("/blog/error/"+response.getStatus()).forward(request,response);*/
            response.sendRedirect("/blog/error/"+response.getStatus());
            return false;
        }else {
            if(handler instanceof ResourceHttpRequestHandler) {
                
            }else if(handler instanceof HandlerMethod){
                handlerMethod=(HandlerMethod)handler;
                Users user= (Users) request.getSession().getAttribute("loginUser");
                if ("/blog/user/login".equals(request.getRequestURI())){
                    return true;
                }else {
                    if (user != null) {
                        String methodName = handlerMethod.getMethod().getName();
                        String className = handlerMethod.getMethod().getDeclaringClass().getName();
                        List<AccModuleMore> accModuleMores = accModuleMoreMapper.selectAccModuleMoreByUserId(user.getId());
                        for (AccModuleMore accModuleMore : accModuleMores) {
                            if (accModuleMore.getModule().getClassname().contains(className)) {
                                logger.info("class:" + accModuleMore.getModule().getClassname());
                                logger.info("找到相同类");
                                if (accModuleMore.getModule().getMoethod().contains(methodName)) {
                                    logger.info("method:" + accModuleMore.getModule().getMoethod());
                                    logger.info("找到方法了");
                                    return true;
                                }
                            }
                        }
                        logger.info("没有该权限");
                        request.setAttribute("msg", "操作失败,没有权限!");
                        request.getRequestDispatcher("/main.html").forward(request, response);
                        return false;
                    }
                }
            }
            return true;
        }
    }

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