1、文件所在位置：

2、需要Guava依赖：

        <dependency><groupId>com.google.guava</groupId><artifactId>guava</artifactId><version>23.0</version></dependency>

3、启动时就读取放入缓存的代码：

@Service
@AllArgsConstructor
@Slf4j
public class SensitiveCheckService {private static final Cache<String, String> SENSITIVE_WORDS_CACHE = CacheBuilder.newBuilder()// 设置缓存容量数.maximumSize(1).build();static {try {ClassLoader classLoader = DemoApplication.class.getClassLoader();Enumeration<URL> resources = classLoader.getResources("static/sensitive/敏感词库.txt");List<String> allSensitiveList = new ArrayList<>();while (resources.hasMoreElements()) {URL resource = resources.nextElement();BufferedReader reader = new BufferedReader(new InputStreamReader(resource.openStream(), "utf-8"));String line;while ((line = reader.readLine()) != null) {// 一行行读取allSensitiveList.add(line);}SENSITIVE_WORDS_CACHE.put(RedisKeyConstant.ALL_SENSITIVE_WORDS, JSON.toJSONString(allSensitiveList));}} catch (Exception e) {log.error("加载敏感词失败", e);}}public List<String> getSensitiveWordsCache() {return JSON.parseArray(SENSITIVE_WORDS_CACHE.getIfPresent(RedisKeyConstant.ALL_SENSITIVE_WORDS), String.class);}}

Guava的缓存类似于redis。比起Redis，Guava的缓存优势在于更轻更快，而Redis的优势在于支持分布式