Void & void Void用在泛型

Posted 2021-01-23 junglecat

public Void setStr(String key,String value)throws Exception{

    RetryTemplate  retryTemplate=initRetryTemplate();
     retryTemplate.execute(new RetryCallback<Void,Exception>() {
        int i = 0;
        // 重试操作
        @Override
        public Void doWithRetry(RetryContext retryContext) throws Exception {
            log.info("retry count: {}", retryContext.getRetryCount());
              stringRedisTemplate.opsForValue().set(key,value);
            // return len(i++);
            return null;
        }
    });
    return null;
}