public int keyWordsFind(String content) {
    List<String> list = null;
    list = redisTemplate.opsForList().range("words_filter", 0, -1);
    if (CollectionUtils.isEmpty(list)) {
        try {
            org.springframework.core.io.Resource resource = new ClassPathResource("data/words.txt");
            InputStream is = resource.getInputStream();
            InputStreamReader isr = new InputStreamReader(is);
            BufferedReader br = new BufferedReader(isr);
            String data = null;
            while ((data = br.readLine()) != null) {
                if (StringUtils.isNotEmpty(data)) {
                    list.add(data);
                }
            }
            br.close();
            isr.close();
            is.close();
            redisTemplate.opsForList().rightPushAll("words_filter", list);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    WordTree tree = new WordTree();
    tree.addWords(list);
    //密集匹配原则：假如关键词有 ab,b，文本是abab，将匹配 [ab,b,ab]
    //贪婪匹配（最长匹配）原则：假如关键字a,ab，最长匹配将匹配[a, ab]
    List<String> matchAll = tree.matchAll(content,-1, false, false);
    if(matchAll.size()>0){
        log.info("敏感词 {}",matchAll.toString());
    }
    return matchAll.size();
}