<!--redis缓存--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId> </dependency> <!--redis缓存-->
import com.fasterxml.jackson.annotation.JsonAutoDetect; import com.fasterxml.jackson.annotation.PropertyAccessor; import com.fasterxml.jackson.databind.ObjectMapper; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.cache.CacheManager; import org.springframework.cache.annotation.CachingConfigurerSupport; import org.springframework.cache.annotation.EnableCaching; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.data.redis.cache.RedisCacheConfiguration; import org.springframework.data.redis.cache.RedisCacheManager; import org.springframework.data.redis.cache.RedisCacheWriter; import org.springframework.data.redis.connection.RedisConnectionFactory; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.data.redis.core.StringRedisTemplate; import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer; import org.springframework.data.redis.serializer.JdkSerializationRedisSerializer; import org.springframework.data.redis.serializer.RedisSerializationContext; import java.time.Duration; import java.util.HashMap; import java.util.Map; /** * 缓存配置类 * * @author wzm * @date 2019/6/6 14:34 * @version 1.0.0 **/ @Configuration @EnableCaching public class RedisCacheConfig extends CachingConfigurerSupport { protected final static Logger log = LoggerFactory.getLogger(RedisCacheConfig.class); //redis 缓存默认过期时间单位:秒 private static final Long DEFAULT_EXPIRATION_TIME = 600L; @Bean public CacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) { return new RedisCacheManager( RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory), // 默认策略,@Cacheable未配置的 key 会使用这个,默认过期时间 this.getRedisCacheConfigurationWithTtl(DEFAULT_EXPIRATION_TIME), // @Cacheable 指定 key 策略 this.getRedisCacheConfigurationMap() ); } private Map<String, RedisCacheConfiguration> getRedisCacheConfigurationMap() { Map<String, RedisCacheConfiguration> redisCacheConfigurationMap = new HashMap<>(); return redisCacheConfigurationMap; } private RedisCacheConfiguration getRedisCacheConfigurationWithTtl(Long seconds) { // 设置CacheManager的值序列化方式为JdkSerializationRedisSerializer, // 但其实RedisCacheConfiguration默认就是使用StringRedisSerializer序列化key,JdkSerializationRedisSerializer序列化value ClassLoader loader = this.getClass().getClassLoader(); JdkSerializationRedisSerializer jdkSerializer = new JdkSerializationRedisSerializer(loader); RedisSerializationContext.SerializationPair<Object> pair = RedisSerializationContext.SerializationPair.fromSerializer(jdkSerializer); RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig(); redisCacheConfiguration = redisCacheConfiguration.serializeValuesWith(pair).entryTtl(Duration.ofSeconds(seconds)); return redisCacheConfiguration; } @Bean public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory){ StringRedisTemplate template = new StringRedisTemplate(factory); //设置序列化工具 setSerializer(template); template.afterPropertiesSet(); return template; }
/** * 序列化定义 * * @param template */ private void setSerializer(StringRedisTemplate template) { @SuppressWarnings({"rawtypes", "unchecked"}) Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class); ObjectMapper om = new ObjectMapper(); om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY); om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL); jackson2JsonRedisSerializer.setObjectMapper(om); template.setValueSerializer(jackson2JsonRedisSerializer); } }
##### spring ##### spring: ##### redis ##### redis: host: 192.168.2.117 # database: 0 port: 6379 # password: HNJYzhjw@2018 password: 123456 #连接超时时间 timeout: 6000s jedis: pool: #最大连接数 max-active: 1000 #最大阻塞等待时间(负数表示没限制) max-wait: -1ms #最大空闲 max-idle: 50 #最小空闲 min-idle: 5
import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.stereotype.Component; import org.springframework.util.CollectionUtils; import javax.annotation.Resource; import java.util.List; import java.util.Map; import java.util.Set; import java.util.concurrent.TimeUnit; /** * redis 缓存工具类 */ @Component public class RedisCacheUtil { private Logger logger = LoggerFactory.getLogger(getClass()); //注: 这里不能用Autowired按类型装配注入,必须用@Resource // StringRedisTemplate默认采用的是String的序列化策略, // RedisTemplate默认采用的是JDK的序列化策略,保存的key和value都是采用此策略序列化保存的 /** * */ @Resource private RedisTemplate<String, Object> redisTemplate; /** * 指定缓存失效时间 * * @param key 键 * @param time 时间(秒) * @return */ public boolean expire(String key, long time) { try { if (time > 0) { redisTemplate.expire(key, time, TimeUnit.SECONDS); } return true; } catch (Throwable e) { logger.error("redis操作异常:", e); return false; } } /** * 根据key 获取过期时间 * * @param key 键 不能为null * @return 时间(秒) 返回0代表为永久有效 */ public long getExpire(String key) { return redisTemplate.getExpire(key, TimeUnit.SECONDS); } /** * 判断key是否存在 * * @param key 键 * @return true 存在 false不存在 */ public boolean hasKey(String key) { try { return redisTemplate.hasKey(key); } catch (Throwable e) { logger.error("redis操作异常:", e); return false; } } /** * 删除缓存 * * @param key 可以传一个值 或多个 */ @SuppressWarnings("unchecked") public void delete(String... key) { if (key != null && key.length > 0) { if (key.length == 1) { redisTemplate.delete(key[0]); } else { redisTemplate.delete(CollectionUtils.arrayToList(key)); } } } // ============================String============================= /** * 普通缓存获取 * * @param key 键 * @return 值 */ public <T> T getString(String key) { return key == null ? null : (T) redisTemplate.opsForValue().get(key); } /** * 普通缓存放入 * * @param key 键 * @param value 值 * @return true成功 false失败 */ public boolean setString(String key, Object value) { try { redisTemplate.opsForValue().set(key, value); return true; } catch (Throwable e) { logger.error("redis操作异常:", e); return false; } } /** * 普通缓存放入并设置时间 * * @param key 键 * @param value 值 * @param time 时间(秒) time要大于0 如果time小于等于0 将设置无限期 * @return true成功 false 失败 */ public boolean setString(String key, Object value, long time) { try { if (time > 0) { redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS); } else { setString(key, value); } return true; } catch (Throwable e) { logger.error("redis操作异常:", e); return false; } } // ============================object============================= public Object getObj(String key) { return redisTemplate.boundValueOps(key).get(); } /** * 获取对象 * * @param key * @param <T> * @return */ public <T> T getObject(String key) { return (T) redisTemplate.boundValueOps(key).get(); } /** * 普通缓存放入并设置时间 * * @param key 键 * @param value 值 * @param time 时间(秒) time要大于0 如果time小于等于0 将设置无限期 * @return true成功 false 失败 */ public boolean setObject(String key, Object value, long time) { try { //JsonUtils.toJson if (time > 0) { redisTemplate.opsForValue().set(key, value, time, TimeUnit.SECONDS); } else { setString(key, value); } return true; } catch (Throwable e) { logger.error("redis操作异常:", e); return false; } } /** * 普通缓存放入 * * @param key 键 * @param value 值 * @return true成功 false失败 */ public boolean setObject(String key, Object value) { try { redisTemplate.opsForValue().set(key, JsonUtils.toJson(value)); return true; } catch (Throwable e) { logger.error("redis操作异常:", e); return false; } } /** * 递增 * * @param key 键 * @param delta 要增加几(大于0) * @return */ public long incr(String key, long delta) { if (delta < 0) { throw new RuntimeException("递增因子必须大于0"); } return redisTemplate.opsForValue().increment(key, delta); } /** * 递减 * * @param key 键 * @param delta 要减少几(小于0) * @return */ public long decr(String key, long delta) { if (delta < 0) { throw new RuntimeException("递减因子必须大于0"); } return redisTemplate.opsForValue().increment(key, -delta); } // ================================Map================================= /** * HashGet * * @param key 键 不能为null * @param item 项 不能为null * @return 值 */ public Object hget(String key, String item) { return redisTemplate.opsForHash().get(key, item); } /** * 获取hashKey对应的所有键值 * * @param key 键 * @return 对应的多个键值 */ public Map<Object, Object> hmget(String key) { return redisTemplate.opsForHash().entries(key); } /** * HashSet * * @param key 键 * @param map 对应多个键值 * @return true 成功 false 失败 */ public boolean hmset(String key, Map<String, Object> map) { try { redisTemplate.opsForHash().putAll(key, map); return true; } catch (Throwable e) { logger.error("redis操作异常:", e); return false; } } /** * HashSet 并设置时间 * * @param key 键 * @param map 对应多个键值 * @param time 时间(秒) * @return true成功 false失败 */ public boolean hmset(String key, Map<String, Object> map, long time) { try { redisTemplate.opsForHash().putAll(key, map); if (time > 0) { expire(key, time); } return true; } catch (Throwable e) { logger.error("redis操作异常:", e); return false; } } /** * 向一张hash表中放入数据,如果不存在将创建 * * @param key 键 * @param item 项 * @param value 值 * @return true 成功 false失败 */ public boolean hset(String key, String item, Object value) { try { redisTemplate.opsForHash().put(key, item, value); return true; } catch (Throwable e) { logger.error("redis操作异常:", e); return false; } } /** * 向一张hash表中放入数据,如果不存在将创建 * * @param key 键 * @param item 项 * @param value 值 * @param time 时间(秒) 注意:如果已存在的hash表有时间,这里将会替换原有的时间 * @return true 成功 false失败 */ public boolean hset(String key, String item, Object value, long time) { try { redisTemplate.opsForHash().put(key, item, value); if (time > 0) { expire(key, time); } return true; } catch (Throwable e) { logger.error("redis操作异常:", e); return false; } } /** * 删除hash表中的值 * * @param key 键 不能为null * @param item 项 可以使多个 不能为null */ public void hdel(String key, Object... item) { redisTemplate.opsForHash().delete(key, item); } /** * 判断hash表中是否有该项的值 * * @param key 键 不能为null * @param item 项 不能为null * @return true 存在 false不存在 */ public boolean hHasKey(String key, String item) { return redisTemplate.opsForHash().hasKey(key, item); } /** * hash递增 如果不存在,就会创建一个 并把新增后的值返回 * * @param key 键 * @param item 项 * @param by 要增加几(大于0) * @return */ public double hincr(String key, String item, double by) { return redisTemplate.opsForHash().increment(key, item, by); } /** * hash递减 * * @param key 键 * @param item 项 * @param by 要减少记(小于0) * @return */ public double hdecr(String key, String item, double by) { return redisTemplate.opsForHash().increment(key, item, -by); } // ============================set============================= /** * 根据key获取Set中的所有值 * * @param key 键 * @return */ public Set<Object> sGet(String key) { try { return redisTemplate.opsForSet().members(key); } catch (Throwable e) { logger.error("redis操作异常:", e); return null; } } /** * 根据value从一个set中查询,是否存在 * * @param key 键 * @param value 值 * @return true 存在 false不存在 */ public boolean sHasKey(String key, Object value) { try { return redisTemplate.opsForSet().isMember(key, value); } catch (Throwable e) { logger.error("redis操作异常:", e); return false; } } /** * 将数据放入set缓存 * * @param key 键 * @param values 值 可以是多个 * @return 成功个数 */ public long sSet(String key, Object... values) { try { return redisTemplate.opsForSet().add(key, values); } catch (Throwable e) { logger.error("redis操作异常:", e); return 0; } } /** * 将set数据放入缓存 * * @param key 键 * @param time 时间(秒) * @param values 值可以是多个 * @return 成功个数 */ public long sSetAndTime(String key, long time, Object... values) { try { Long count = redisTemplate.opsForSet().add(key, values); if (time > 0) { expire(key, time); } return count; } catch (Throwable e) { logger.error("redis操作异常:", e); return 0; } } /** * 获取set缓存的长度 * * @param key 键 * @return */ public long sGetSetSize(String key) { try { return redisTemplate.opsForSet().size(key); } catch (Throwable e) { logger.error("redis操作异常:", e); return 0; } } /** * 移除值为value的 * * @param key 键 * @param values 值可以是多个 * @return 移除的个数 */ public long setRemove(String key, Object... values) { try { Long count = redisTemplate.opsForSet().remove(key, values); return count; } catch (Throwable e) { logger.error("redis操作异常:", e); return 0; } } // ===============================list================================= /** * 获取list缓存的内容 * * @param key 键 * @param start 开始 * @param end 结束 0 到 -1代表所有值 * @return */ public List<Object> lGet(String key, long start, long end) { try { return redisTemplate.opsForList().range(key, start, end); } catch (Throwable e) { logger.error("redis操作异常:", e); return null; } } /** * 获取list缓存的长度 * * @param key 键 * @return */ public long lGetListSize(String key) { try { return redisTemplate.opsForList().size(key); } catch (Throwable e) { logger.error("redis操作异常:", e); return 0; } } /** * 通过索引 获取list中的值 * * @param key 键 * @param index 索引 index>=0时, 0 表头,1 第二个元素,依次类推;index<0时,-1,表尾,-2倒数第二个元素,依次类推 * @return */ public Object lGetIndex(String key, long index) { try { return redisTemplate.opsForList().index(key, index); } catch (Throwable e) { logger.error("redis操作异常:", e); return null; } } /** * 将list放入缓存 * * @param key 键 * @param value 值 * @return */ public boolean lSet(String key, Object value) { try { redisTemplate.opsForList().rightPush(key, value); return true; } catch (Throwable e) { logger.error("redis操作异常:", e); return false; } } /** * 将list放入缓存 * * @param key 键 * @param value 值 * @param time 时间(秒) * @return */ public boolean lSet(String key, Object value, long time) { try { redisTemplate.opsForList().rightPush(key, value); if (time > 0) { expire(key, time); } return true; } catch (Throwable e) { logger.error("redis操作异常:", e); return false; } } /** * 将list放入缓存 * * @param key 键 * @param value 值 * @return */ public boolean lSet(String key, List<Object> value) { try { redisTemplate.opsForList().rightPushAll(key, value); return true; } catch (Throwable e) { logger.error("redis操作异常:", e); return false; } } /** * 将list放入缓存 * * @param key 键 * @param value 值 * @param time 时间(秒) * @return */ public boolean lSet(String key, List<Object> value, long time) { try { redisTemplate.opsForList().rightPushAll(key, value); if (time > 0) { expire(key, time); } return true; } catch (Throwable e) { logger.error("redis操作异常:", e); return false; } } /** * 根据索引修改list中的某条数据 * * @param key 键 * @param index 索引 * @param value 值 * @return */ public boolean lUpdateIndex(String key, long index, Object value) { try { redisTemplate.opsForList().set(key, index, value); return true; } catch (Throwable e) { logger.error("redis操作异常:", e); return false; } } /** * 移除N个值为value * * @param key 键 * @param count 移除多少个 * @param value 值 * @return 移除的个数 */ public long lRemove(String key, long count, Object value) { try { Long remove = redisTemplate.opsForList().remove(key, count, value); return remove; } catch (Throwable e) { logger.error("redis操作异常:", e); return 0; } } }
原文:https://www.cnblogs.com/jockming/p/12051637.html