springboot使用redis,用scan实现keys * 的功能

@GetMapping(value = "/patternDelete")
    public Set patternDeleteCache(String pattern) {
        Set deleteKeys = (Set) redisTemplate.execute((RedisCallback>) connection -> {
            ScanOptions scanOptions = ScanOptions.scanOptions().match("*" + pattern + "*").count(1000).build();
            Cursor scan = connection.scan(scanOptions);
            Set keys = new HashSet<>();
            while (scan.hasNext()) {
                byte[] next = scan.next();
                keys.add(new String(next));
            }
            return keys;
        });
        if (CollectionUtils.isNotEmpty(deleteKeys)) {
            redisTemplate.delete(deleteKeys);
        }
        return deleteKeys;
    }

参考在RedisTemplate中使用scan代替keys指令