1、pom文件

  <dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId></dependency>

2、redis工具类

@Service(value = "redisService")
@Slf4j
public class RedisService {@Autowiredprivate RedisTemplate redisTemplate;/*** 批量删除对应的value** @param keys key数组*/public void removeBatchKey(final String... keys) {for (String key : keys) {removeByKey(key);}}/*** 批量删除key** @param pattern string*/@SuppressWarnings("unchecked")public void removePattern(final String pattern) {Set<Serializable> keys = redisTemplate.keys(pattern);if (!CollectionUtils.isEmpty(keys)) {redisTemplate.delete(keys);}}/*** 删除key** @param key string*/@SuppressWarnings("unchecked")public void removeByKey(final String key) {if (exists(key)) {redisTemplate.delete(key);}}/*** 判断缓存中是否有对应的value** @param keys keys* @return boolean false or true*/@SuppressWarnings("unchecked")public boolean existsBatchKey(final String... keys) {for (String key : keys) {if (!redisTemplate.hasKey(key)) {return false;}}return true;}/*** 判断缓存中是否有对应的value** @param key key* @return boolean false or true*/@SuppressWarnings("unchecked")public boolean exists(final String key) {return redisTemplate.hasKey(key);}/*** 读取缓存** @param key string* @return object*/@SuppressWarnings("unchecked")public Object get(final String key) {Object result;ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();result = operations.get(key);return result;}/*** 写入缓存,长久有效** @param key   string* @param value object* @return boolean false or true*/@SuppressWarnings("unchecked")public boolean setNoExpire(final String key, Object value) {boolean result = false;try {ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();operations.set(key, value);result = true;} catch (DataAccessException e) {log.error("Write RedisCache failure:" + e);}return result;}/*** 写入缓存** @param key        string* @param value      object* @param expireTime 过期时间* @return boolean false or true*/@SuppressWarnings("unchecked")public boolean setTakeOverTime(final String key, Object value, Long expireTime) {boolean result = false;try {ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();operations.set(key, value);redisTemplate.expire(key, expireTime, TimeUnit.SECONDS);result = true;} catch (DataAccessException e) {log.error("Write RedisCache failure:" + e);}return result;}/*** 向hash表写入数据** @param key   键名，即hash表名* @param field 字段名* @param value 值*/@SuppressWarnings("unchecked")public void setKeyValue(String key, Object field, Object value) {if (StringUtils.isEmpty(key) || null == field || null == value) {log.debug("Read RedisCache failure: Parameter cannot Empty");}redisTemplate.opsForHash().put(key, field, value);}/*** 向hash表写入数据** @param key 键名，即hash表名*/@SuppressWarnings("unchecked")public long getHashKeylen(String key) {if (StringUtils.isEmpty(key)) {log.debug("Read RedisCache failure: Parameter cannot Empty");}return redisTemplate.opsForHash().size(key);}/*** 获取为哈希表 key 中的域** @param key   键名，即hash表名* @param field 字段名*/@SuppressWarnings("unchecked")public Object get(String key, Object field) {if (StringUtils.isEmpty(key) || null == field) {log.debug("Read RedisCache failure: Parameter cannot Empty");}return redisTemplate.opsForHash().get(key, field);}/*** 删除为哈希表 key** @param key   键名，即hash表名* @param field 字段名*/@SuppressWarnings("unchecked")public Object deleteHash(String key, String field) {if (StringUtils.isEmpty(key) || StringUtils.isEmpty(field)) {log.debug("Read RedisCache failure: Parameter cannot Empty");}return redisTemplate.opsForHash().delete(key, field);}/*** 判断hash中是否有相应字段** @param key   键名，即hash表名* @param field 字段名* @return 存在返回true, 否则返回false*/@SuppressWarnings("unchecked")public boolean existKeyValue(String key, String field) {if (StringUtils.isEmpty(key) || StringUtils.isEmpty(field)) {return false;} else {HashOperations<String, String, Object> operations = redisTemplate.opsForHash();//redis中存储的sessionId前缀spring:session:sessions:return operations.hasKey("spring:session:sessions:" + key, field);}}@SuppressWarnings("unchecked")public void setExpireTime(Object key, Long timeout, TimeUnit timeUnit) {redisTemplate.expire(key, timeout, TimeUnit.SECONDS);}/*** 为哈希表 key 中的域 field 的值加上增量 increment** @param key   键名，即hash表名* @param value 值*/@SuppressWarnings("unchecked")public long increment(String key, long value) {if (StringUtils.isEmpty(key) || StringUtils.isEmpty(value)) {log.debug("Read RedisCache failure: Parameter cannot Empty");}return redisTemplate.opsForValue().increment(key, value);}}