if (principal instanceof CsUser) 判断不生效直接跳过

Question

想使用instanceof 来判断类型的时候为什么会直接跳过的呢

 if (principal instanceof CsUser) {
            Long UserId = csJwtService.getAuthenticationId();


            Set<String> urls = rbacUrlService.urls( UserId );
            //不能使用等于来比较
            for (String url : urls) {
                //如果存在url就返回true
                if (antPathMatcher.match(url, request.getRequestURI())) {
                    hasPermission = true;
                    break;
                }
            }
 }

Answer 1

在这段代码开头加上
principal = new CsUser();
,,,

看看是否能走入if