public static void main(String[] args) {

        Cache<String, Boolean> cahceBuilder =

                CacheBuilder.newBuilder().expireAfterWrite(5, TimeUnit.SECONDS).build();

        String key="123";

        try{

            cahceBuilder.get(key, new Callable<Boolean>() {

                @Override

                public Boolean call() throws Exception {

                    //执行业务方法

                    bizMethon();

                    return true;

                }

            });

        }catch(Exception e){

            //获取导致抛出此异常的原因，判断是否为指定异常实例

            Throwable cause = e.getCause();

            if(cause instanceof NullPointerException){

                logger.error(String.format("捕获到指定异常:%s", e.getMessage()),e);

            }else{

                logger.error(String.format("其他异常:%s", e.getMessage()),e);

            }

        }

    }

    //模拟业务方法，直接抛出异常

    public static void bizMethon() throws NullPointerException{

        throw new NullPointerException("测试异常");

    }