最近开发新代码的时候发现有好多同学,开始考虑redis的原子操作执行了,实际的业务场景:比如指定发放优惠劵;redis的秒杀活动等。
今天我根据实际的开发业务,咱们写一个指定发送优惠劵的逻辑。并发其实支持 jmeter测试并不好、
1.先来一个生产key的代码
package com.hbg.common.constants; /** * 缓存key管理类 * * @author huojg */ public class RedisKeyConstant { public static final String ROOT = "hbg:"; public static final String ROOT_VALUE = "hbg"; public static final String SPRING_CACHE_ROOT = "hbg::"; /** * 通用 获取Key * * @param key * @param args * @return */ public static String getKey(String key, Object... args) { if (args != null && args.length > 0) { return ROOT + String.format(key, args); } return ROOT + key; } public static String getSpringCachedKey(String key, Object... args) { if (args != null && args.length > 0) { return SPRING_CACHE_ROOT + String.format(key, args); } return SPRING_CACHE_ROOT + key; } public static String annoCachedKey(String key, Object... args) { if (args != null && args.length > 0) { return String.format(key, args); } return key; } /** * 系统配置缓存key,展位填充,%s = 组名 */ public static final String SYSTEM_CONFIG = "system.config:%s"; /** * 头部Banner配置缓存key :banner位置 */ public static final String BANNER = "banner"; /** * 售后前置标记key */ public static final String AFTER_SALE = "after:sale:"; /** * 优惠券 */ public static final String CARD = "cardVoucher:id:%s"; public static final String COUPON_GET_TYPE = "cardVoucher:getType:id:%s"; public static final String USER_GET_NUM = "coupon:userId:%s:couponId:%s"; /** * 购买,按规格粒度 加锁; %s = skuId * 适用于非活动购买 */ public static final String SKU_STOCK_LOCK = "stock:lock:skuId:%s"; /** * 直播广告 */ public static final String LIVE = "live.id:%s"; /** * 购物车 锁标识 用户Id + skuId */ public static final String SHOPPING_CART_LOCK = "shoppingCart:userId:%s:skuId:%s"; /** * 商品库存 */ public static final String SKU_STOCK = "stock:skuId:%s"; /** * 商品统计锁 */ public static final String GOODS_STATISTIC_STOCK_LOCK = "goods.statistic.goodsId:%s"; /** * 订单发货消息 */ public static final String ORDER_DELIVER_MESSAGE = "order:deliver:message:%s"; /** * 商品详情缓存 */ public static final String GOODS_DETAIL = "goods:detail:Id:%s"; /** * 商品详情缓存 */ public static final String GOODS_PROFIT_CONFIG = "goods:profit:config:Id:%s"; /** * 商品详情缓存 */ public static final String ACT_GOODS_DETAIL = "act:goods:detail:Id:%s"; }
2.再来lua脚本
couponRedis.lua
--库存 local stock=KEYS[1] local stockValue=redis.call('GET',stock) --限领次数 local num=KEYS[2] local numValue=redis.call('GET',num) --领取次数 local getNum=KEYS[3] local getNumValue=redis.call('GET',getNum) if stockValue then --库存是否小于0 if tonumber(stockValue)<=0 then return 0 end --是否限领 if numValue then --redis.log(redis.LOG_DEBUG,'2222') --是否领取过 if getNumValue then --是否超出限领 if tonumber(getNumValue) >= tonumber(numValue) then --redis.log(redis.LOG_DEBUG,'33333') return 0 end --redis.log(redis.LOG_DEBUG,'666666') redis.call('set',getNum,tonumber(getNumValue)+1) redis.call('SET',stock,tonumber(stockValue)-1) return 1 end --redis.log(redis.LOG_DEBUG,'44444') redis.call('set',getNum,1) redis.call('SET',stock,tonumber(stockValue)-1) return 1 end --redis.log(redis.LOG_DEBUG,'11111') redis.call('SET',stock,tonumber(stockValue)-1) return 1 end
3.执行java代码调用:
public boolean getCardVoucher(UserGetCouponsRequest baseRequest, Long userId) { // 执行 lua 脚本 DefaultRedisScript<Boolean> redisScript = new DefaultRedisScript<>(); // 指定返回类型 redisScript.setResultType(Boolean.class); // 指定 lua 脚本 redisScript.setScriptSource(new ResourceScriptSource(new ClassPathResource("couponRedis.lua"))); List<String> list=new ArrayList<>(); list.add(RedisKeyConstant.getKey(RedisKeyConstant.CARD, baseRequest.getCardId())); list.add(RedisKeyConstant.getKey(RedisKeyConstant.COUPON_GET_TYPE, baseRequest.getCardId())); list.add(RedisKeyConstant.getKey(RedisKeyConstant.USER_GET_NUM, baseRequest.getUserId(),baseRequest.getCardId()) ); // 参数一:redisScript,参数二:key列表,参数三:arg(可多个) Boolean result = redisTemplate.execute(redisScript, list); log.info("结果:"+result); if(result){ getCoupon(baseRequest,userId); } else { throw BusinessExceptionFactory.create(BusinessErrorEnum.SERVER_IS_BUSY); }
4.在给你们加上依赖包
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>org.redisson</groupId>
<artifactId>redisson</artifactId>
<version>3.11.0</version>
</dependency>
<!-- 使用spring cache -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-cache</artifactId>
</dependency>
<!-- redis -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
RedisTemplate<String, String> redisTemplate;
总结: 上面就是基本的通过lua脚本执行redis命令,来完成java业务代码,java通过script加载引擎的模式引用lua文件。保证执行的redis命令都在一个lua脚本中,保证中执行的一个原子性。
注意:好多同学看不懂lua脚本的语法,解释如下
local 标识 当前变量全局
KEYS[?] 这是我们redis要设置的key,默认是从1开始
redis.call('GET',getNum) 通过语法函数。命令
'GET' 获取当前key的值。跟redis直接获取key 一样一样的。
重点:
if条件
lua脚本的语法: if ... then ... end
简单理解就是,如果 if 后面的语句是true 就执行 then后面的语句。end就是结束符
我的理解 把 then ...end 理解成java的 if()形式就ok
关于lua语法结构和使用,包括。变量定于,if条件。for条件,结束语
跟学习java的语法结构相差不多,同学们自行找资源学习。
最后给同学们一点好东西
package com.hbg.common.config; import com.fasterxml.jackson.annotation.JsonAutoDetect; import com.fasterxml.jackson.annotation.JsonTypeInfo; import com.fasterxml.jackson.annotation.PropertyAccessor; import com.fasterxml.jackson.databind.DeserializationFeature; import com.fasterxml.jackson.databind.MapperFeature; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.SerializationFeature; import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule; import lombok.extern.slf4j.Slf4j; import org.redisson.Redisson; import org.redisson.api.RedissonClient; import org.redisson.client.codec.Codec; import org.redisson.client.codec.JsonJacksonMapCodec; import org.redisson.codec.JsonJacksonCodec; import org.redisson.config.Config; import org.springframework.beans.factory.annotation.Value; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.data.redis.connection.RedisConnectionFactory; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.data.redis.serializer.GenericJackson2JsonRedisSerializer; import org.springframework.data.redis.serializer.StringRedisSerializer; import org.springframework.http.converter.json.Jackson2ObjectMapperBuilder; import redis.clients.jedis.JedisPool; import redis.clients.jedis.JedisPoolConfig; @Configuration @Slf4j public class RedisConfig { @Value("${spring.redis.host}") private String host; @Value("${spring.redis.port}") private int port; @Value("${spring.redis.timeout}") private int timeout; @Value("${database:0}") private Integer database; @Value("${spring.redis.jedis.pool.max-idle}") private int maxIdle; @Value("${spring.redis.jedis.pool.max-wait}") private long maxWaitMillis; @Value("${spring.redis.password}") private String password; @Value("${spring.redis.block-when-exhausted}") private boolean blockWhenExhausted; @Bean public JedisPool redisPoolFactory() { log.info("JedisPool注入成功!!"); log.info("redis地址:" + host + ":" + port); log.info("timeout:"+timeout); log.info("maxIdle:"+maxIdle); log.info("maxWaitMillis:"+maxWaitMillis); log.info("blockWhenExhausted:"+blockWhenExhausted); JedisPoolConfig jedisPoolConfig = new JedisPoolConfig(); jedisPoolConfig.setMaxIdle(maxIdle); jedisPoolConfig.setMaxWaitMillis(maxWaitMillis); // 连接耗尽时是否阻塞, false报异常,ture阻塞直到超时, 默认true jedisPoolConfig.setBlockWhenExhausted(blockWhenExhausted); // 是否启用pool的jmx管理功能, 默认true jedisPoolConfig.setJmxEnabled(true); JedisPool jedisPool = new JedisPool(jedisPoolConfig, host, port, timeout, password); log.info("jedisPool:"+jedisPool); return jedisPool; } @Bean public RedissonClient redissonClient() { ObjectMapper mapper = Jackson2ObjectMapperBuilder.json() .featuresToDisable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS) .modules(new JavaTimeModule()) .build(); Codec codec = new JsonJacksonCodec(mapper); Config config = new Config(); config.setCodec(codec); config.useSingleServer() .setAddress("redis://" + host + ":" + port) .setPassword(password) .setDatabase(database == null ? 0 : database) .setTimeout(5000) .setSubscriptionConnectionMinimumIdleSize(1) .setSubscriptionConnectionPoolSize(256) .setConnectTimeout(30000) .setConnectionPoolSize(256) .setConnectionMinimumIdleSize(1) .setRetryAttempts(3) .setRetryInterval(3000) .setIdleConnectionTimeout(30000) .setClientName("com.nuonuo.accounting.redisclient"); return Redisson.create(config); } /** * 引入RedisTemplate * @param factory * @return */ @Bean public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory){ RedisTemplate<String, Object> redisTemplate = new RedisTemplate<>(); redisTemplate.setConnectionFactory(factory); //json转对象类,不设置默认的会将json转成hashmap ObjectMapper om = new ObjectMapper(); om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY); om.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS); om.registerModule(new JavaTimeModule()); om.configure(MapperFeature.USE_ANNOTATIONS, false); om.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false); om.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false); // 此项必须配置,否则会报java.lang.ClassCastException: java.util.LinkedHashMap cannot be cast to XXX om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL, JsonTypeInfo.As.PROPERTY); //使用Jackson 2,将对象序列化为JSON GenericJackson2JsonRedisSerializer jackson2JsonRedisSerializer = new GenericJackson2JsonRedisSerializer(om); redisTemplate.setValueSerializer(jackson2JsonRedisSerializer); // 设置key,value的序列化器 redisTemplate.setKeySerializer(new StringRedisSerializer()); redisTemplate.setValueSerializer(jackson2JsonRedisSerializer); redisTemplate.setHashKeySerializer(new StringRedisSerializer()); redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer); redisTemplate.afterPropertiesSet(); return redisTemplate; } }
注入redis 和redisson 的工具conf类
RedissonUtil
package com.hbg.common.cache; import cn.hutool.core.util.StrUtil; import lombok.extern.slf4j.Slf4j; import org.redisson.RedissonMultiLock; import org.redisson.api.*; import org.redisson.client.codec.Codec; import org.springframework.stereotype.Component; import javax.annotation.PreDestroy; import java.util.List; import java.util.Set; import java.util.concurrent.TimeUnit; @Slf4j @Component public class RedissonUtil { /** * 默认缓存时间 */ private static final Long DEFAULT_EXPIRED = 5 * 60L; /** * redisson client对象 */ private final RedissonClient redisson; public RedissonUtil(RedissonClient redisson) { this.redisson = redisson; } /** * 读取缓存 * * @param key 缓存key * @param <V> * @return 缓存返回值 */ public <V> V get(String key) { try { RBucket<V> bucket = redisson.getBucket(key); return bucket.get(); } catch (Exception e) { this.remove(key); } return null; } /** * 读取缓存 * * @param key 缓存key * @param <V> * @param codec value编码解码方式 * @return 缓存返回值 * @like https://yq.aliyun.com/articles/551642/ */ public <V> V get(String key, Codec codec) { RBucket<V> bucket = redisson.getBucket(key, codec); return bucket.get(); } /** * rmap中获取 */ public <K, V>V get(String key, String hashKey, Codec codec) { RMap<K, V> map = redisson.getMap(key, codec); return map.get(hashKey); } /** * rmap中获取 */ public <K, V>V get(String key, String hashKey) { RMap<K, V> map = redisson.getMap(key); return map.get(hashKey); } /** * rmap中设置值 */ public <K, V>V put(String key, K hashKey, V v) { RMap<K, V> map = redisson.getMap(key); return map.put(hashKey,v); } /** * rmap中设置值 */ public <K, V>V put(String key, K hashKey, V v, Codec codec) { RMap<K, V> map = redisson.getMap(key, codec); return map.put(hashKey,v); } /** * 设置缓存 * * @param key 缓存key * @param value 缓存值 * @param <V> */ public <V> void set(String key, V value) { RBucket<V> bucket = redisson.getBucket(key); bucket.set(value, DEFAULT_EXPIRED, TimeUnit.SECONDS); } /** * 获取set格式的缓存 * * @param key 缓存key * @return */ public <V> RSet<V> getRSet(String key) { return redisson.getSet(key); } /** * 获取set格式的缓存 * * @param key 缓存key * @return */ public <V> Set<V> getSets(String key) { return getRSet(key); } /** * 设置缓存,不设置过期时间 * * @param key 缓存key * @param value 缓存值 * @param <V> */ public <V> void getAndSet(String key, V value) { RBucket<V> bucket = redisson.getBucket(key); bucket.set(value); } /** * 设置缓存 * * @param key 缓存key * @param value 缓存值 * @param expired 缓存过期时间 * @param <V> 类型 */ public <V> void set(String key, V value, long expired) { RBucket<V> bucket = redisson.getBucket(key); bucket.set(value, expired <= 0 ? DEFAULT_EXPIRED : expired, TimeUnit.SECONDS); } /** * 移除缓存 * * @param key */ public void remove(String key) { redisson.getBucket(key).delete(); } /** * 移除缓存,map * * @param key */ public void remove(String key, String hashKey) { redisson.getMap(key).remove(hashKey); } /** * 设置过期时间 * * @param key */ public void expire(String key) { redisson.getBucket(key).expire(10, TimeUnit.SECONDS); } /** * 自定义设置设置过期时间 * @param key * @param time * @param timeType */ public void expire(String key,long time,TimeUnit timeType) { redisson.getBucket(key).expire(time, timeType); } /** * 判断缓存是否存在 * * @param key * @return */ public boolean exists(String key) { return redisson.getBucket(key).isExists(); } /** * 判断缓存是否存在 针对hash数据结构 * * @param key * @return */ public boolean exists(String key, String hashKey) { return redisson.getMap(key).containsKey(hashKey); } /** * 暴露redisson的RList对象 * * @param key * @param <T> * @return */ public <T> RList<T> getRList(String key) { return redisson.getList(key); } /** * 暴露redisson的List结果 * * @param key * @param <T> * @return */ public <T> List<T> getLists(String key) { return getRList(key); } /** * 暴露redisson的RMap对象 * * @param key * @param <K, V> * @return */ public <K, V> RMap<K, V> getRMap(String key) { return redisson.getMap(key); } /** * 暴露redisson的Lock对象 * * @param key * @return */ public RLock getRedisLock(String key) { return redisson.getLock(key); } /** * 暴露redisson的连锁 RedissonMultiLock对象 * * @param locks * @return */ public RedissonMultiLock getMultiLock(RLock... locks) { return new RedissonMultiLock(locks); } /** * 原子的获取某个key递增后的值 * @param key key * @return 更新后的值 */ public long incrementAndGet(String key){ RAtomicLong rAtomicLong = redisson.getAtomicLong(key); return rAtomicLong.incrementAndGet(); } /** * 原子的获取某个key递增后的值 * @param key key * @return 更新后的值 */ public long addAndGet(String key, long value){ RAtomicLong rAtomicLong = redisson.getAtomicLong(key); return rAtomicLong.addAndGet(value); } public void setRAtomicLong(String key, long value) { RAtomicLong rAtomicLong = redisson.getAtomicLong(key); rAtomicLong.set(value); } public RAtomicLong getRAtomicLong(String key) { RAtomicLong atomicLong = redisson.getAtomicLong(key); return atomicLong; } /** * 初始化原子long 0 * @param key */ public void atomicSetZero(String key) { RAtomicLong rAtomicLong = redisson.getAtomicLong(key); rAtomicLong.set(0); rAtomicLong.expire(DEFAULT_EXPIRED, TimeUnit.SECONDS); } @PreDestroy public void close() { try { if (redisson != null) { redisson.shutdown(); } } catch (Exception ex) { log.error(StrUtil.EMPTY, "RedissonUtil.close", ex); } } }
RedisCache:
package com.hbg.common.cache; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import redis.clients.jedis.Jedis; import redis.clients.jedis.JedisPool; import redis.clients.jedis.ListPosition; import redis.clients.jedis.SortingParams; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.util.List; import java.util.Map; import java.util.Set; /** * redis 缓存 * * @author cyx */ @Component @Slf4j public class RedisCache { @Autowired private JedisPool jedisPool; //选择redis库 0-15 默认是0 private int indexdb = 0; public int getIndexdb() { return indexdb; } public void setIndexdb(int indexdb) { this.indexdb = indexdb; } /** * <p> * 通过key获取储存在redis中的value * </p> * <p> * 并释放连接 * </p> * * @param key * @return 成功返回value 失败返回null */ public String getStringValue(String key) { Jedis jedis = null; String value = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); value = jedis.get(key); log.info(value); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return value; } /** * <p> * 通过key获取储存在redis中的value * </p> * <p> * 并释放连接 * </p> * * @param key * @return 成功返回value 失败返回null */ public Object getObjectValue(String key) { Jedis jedis = null; Object obj = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); byte[] bytes = jedis.get(key.getBytes()); if (bytes != null && bytes.length > 0) { obj = unserialize(bytes); } } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return obj; } public <T> T getObject(String key) { Jedis jedis = null; Object obj = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); byte[] bytes = jedis.get(key.getBytes()); if (bytes != null && bytes.length > 0) { obj = unserialize(bytes); } } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return (T) obj; } /** * <p> * 通过key获取储存在redis中的value * </p> * <p> * 并释放连接 * </p> * * @param key * @return 成功返回value 失败返回null */ public byte[] get(byte[] key) { Jedis jedis = null; byte[] value = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); value = jedis.get(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return value; } /** * <p> * 向redis存入key和value,并释放连接资源 * </p> * <p> * 如果key已经存在 则覆盖 * </p> * * @param key * @param value * @param seconds 存活时间 秒 * @return 成功 返回OK 失败返回 0 */ public String setStringValue(String key, String value, int seconds) { Jedis jedis = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); return jedis.setex(key, seconds, value); } catch (Exception e) { log.error(e.getMessage()); return "0"; } finally { returnResource(jedisPool, jedis); } } /** * <p> * 向redis存入key和value,并释放连接资源 * </p> * <p> * 如果key已经存在 则覆盖 * </p> * * @param key * @param value * @param seconds 存活时间 秒 * @return 成功 返回OK 失败返回 0 */ public String setObjectValue(String key, Object value, int seconds) { Jedis jedis = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); return jedis.setex(key.getBytes(), seconds, ObjTOSerialize(value)); } catch (Exception e) { log.error(e.getMessage()); return "0"; } finally { returnResource(jedisPool, jedis); } } /** * <p> * 向redis存入key和value,并释放连接资源 * </p> * <p> * 如果key已经存在 则覆盖 * </p> * * @param key * @param value * @return 成功 返回OK 失败返回 0 */ public String set(byte[] key, byte[] value) { Jedis jedis = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); return jedis.set(key, value); } catch (Exception e) { log.error(e.getMessage()); return "0"; } finally { returnResource(jedisPool, jedis); } } /** * <p> * 删除指定的key,也可以传入一个包含key的数组 * </p> * * @param keys 一个key 也可以使 string 数组 * @return 返回删除成功的个数 */ public Long del(String... keys) { Jedis jedis = null; try { jedis = jedisPool.getResource(); return jedis.del(keys); } catch (Exception e) { log.error(e.getMessage()); return 0L; } finally { returnResource(jedisPool, jedis); } } /** * <p> * 删除指定的key,也可以传入一个包含key的数组 * </p> * * @param keys 一个key 也可以使 string 数组 * @return 返回删除成功的个数 */ public Long delete(String... keys) { Jedis jedis = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); return jedis.del(keys); } catch (Exception e) { log.error(e.getMessage()); return 0L; } finally { returnResource(jedisPool, jedis); } } /** * <p> * 删除指定的key,也可以传入一个包含key的数组 * </p> * * @param keys 一个key 也可以使 string 数组 * @return 返回删除成功的个数 */ public Long delete(byte[]... keys) { Jedis jedis = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); return jedis.del(keys); } catch (Exception e) { log.error(e.getMessage()); return 0L; } finally { returnResource(jedisPool, jedis); } } /** * <p> * 通过key向指定的value值追加值 * </p> * * @param key * @param str * @return 成功返回 添加后value的长度 失败 返回 添加的 value 的长度 异常返回0L */ public Long append(String key, String str) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.append(key, str); } catch (Exception e) { log.error(e.getMessage()); return 0L; } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 判断key是否存在 * </p> * * @param key * @return true OR false */ public Boolean exists(String key) { Jedis jedis = null; try { jedis = jedisPool.getResource(); return jedis.exists(key); } catch (Exception e) { log.error(e.getMessage()); return false; } finally { returnResource(jedisPool, jedis); } } /** * <p> * 清空当前数据库中的所有 key,此命令从不失败。 * </p> * * @return 总是返回 OK */ public String flushDB() { Jedis jedis = null; try { jedis = jedisPool.getResource(); return jedis.flushDB(); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return null; } /** * <p> * 为给定 key 设置生存时间,当 key 过期时(生存时间为 0 ),它会被自动删除。 * </p> * * @param key * @param value 过期时间,单位:秒 * @return 成功返回1 如果存在 和 发生异常 返回 0 */ public Long expire(String key, int value) { Jedis jedis = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); return jedis.expire(key, value); } catch (Exception e) { log.error(e.getMessage()); return 0L; } finally { returnResource(jedisPool, jedis); } } /** * <p> * 以秒为单位,返回给定 key 的剩余生存时间 * </p> * * @param key * @return 当 key 不存在时,返回 -2 。当 key 存在但没有设置剩余生存时间时,返回 -1 。否则,以秒为单位,返回 key * 的剩余生存时间。 发生异常 返回 0 */ public Long ttl(String key) { Jedis jedis = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); Long ttl = jedis.ttl(key); if (ttl < 0L) { ttl = 0L; } return ttl; } catch (Exception e) { log.error(e.getMessage()); return 0L; } finally { returnResource(jedisPool, jedis); } } /** * <p> * 移除给定 key 的生存时间,将这个 key 从『易失的』(带生存时间 key )转换成『持久的』(一个不带生存时间、永不过期的 key ) * </p> * * @param key * @return 当生存时间移除成功时,返回 1 .如果 key 不存在或 key 没有设置生存时间,返回 0 , 发生异常 返回 -1 */ public Long persist(String key) { Jedis jedis = null; try { jedis = jedisPool.getResource(); return jedis.persist(key); } catch (Exception e) { log.error(e.getMessage()); return -1L; } finally { returnResource(jedisPool, jedis); } } /** * <p> * 新增key,并将 key 的生存时间 (以秒为单位) * </p> * * @param key * @param seconds 生存时间 单位:秒 * @param value * @return 设置成功时返回 OK 。当 seconds 参数不合法时,返回一个错误。 */ public String setex(String key, int seconds, String value) { Jedis jedis = null; try { jedis = jedisPool.getResource(); return jedis.setex(key, seconds, value); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return null; } /** * <p> * 设置key value,如果key已经存在则返回0,nx==> not exist * </p> * * @param key * @param value * @return 成功返回1 如果存在 和 发生异常 返回 0 */ public Long setnx(String key, String value) { Jedis jedis = null; try { jedis = jedisPool.getResource(); return jedis.setnx(key, value); } catch (Exception e) { log.error(e.getMessage()); return 0L; } finally { returnResource(jedisPool, jedis); } } /** * <p> * 将给定 key 的值设为 value ,并返回 key 的旧值(old value)。 * </p> * <p> * 当 key 存在但不是字符串类型时,返回一个错误。 * </p> * * @param key * @param value * @return 返回给定 key 的旧值。当 key 没有旧值时,也即是, key 不存在时,返回 nil */ public String getSet(String key, String value) { Jedis jedis = null; try { jedis = jedisPool.getResource(); return jedis.getSet(key, value); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return null; } /** * <p> * 设置key value并制定这个键值的有效期 * </p> * * @param key * @param value * @param seconds 单位:秒 * @return 成功返回OK 失败和异常返回null */ public String setex(String key, String value, int seconds) { Jedis jedis = null; String res = null; try { jedis = jedisPool.getResource(); res = jedis.setex(key, seconds, value); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key 和offset 从指定的位置开始将原先value替换 * </p> * <p> * 下标从0开始,offset表示从offset下标开始替换 * </p> * <p> * 如果替换的字符串长度过小则会这样 * </p> * <p> * example: * </p> * <p> * value : bigsea@zto.cn * </p> * <p> * str : abc * </p> * <P> * 从下标7开始替换 则结果为 * </p> * <p> * RES : bigsea.abc.cn * </p> * * @param key * @param str * @param offset 下标位置 * @return 返回替换后 value 的长度 */ public Long setrange(String key, String str, int offset) { Jedis jedis = null; try { jedis = jedisPool.getResource(); return jedis.setrange(key, offset, str); } catch (Exception e) { log.error(e.getMessage()); return 0L; } finally { returnResource(jedisPool, jedis); } } /** * <p> * 通过批量的key获取批量的value * </p> * * @param keys string数组 也可以是一个key * @return 成功返回value的集合, 失败返回null的集合 ,异常返回空 */ public List<String> mget(String... keys) { Jedis jedis = null; List<String> values = null; try { jedis = jedisPool.getResource(); values = jedis.mget(keys); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return values; } /** * <p> * 批量的设置key:value,可以一个 * </p> * <p> * example: * </p> * <p> * obj.mset(new String[]{"key2","value1","key2","value2"}) * </p> * * @param keysvalues * @return 成功返回OK 失败 异常 返回 null */ public String mset(String... keysvalues) { Jedis jedis = null; String res = null; try { jedis = jedisPool.getResource(); res = jedis.mset(keysvalues); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 批量的设置key:value,可以一个,如果key已经存在则会失败,操作会回滚 * </p> * <p> * example: * </p> * <p> * obj.msetnx(new String[]{"key2","value1","key2","value2"}) * </p> * * @param keysvalues * @return 成功返回1 失败返回0 */ public Long msetnx(String... keysvalues) { Jedis jedis = null; Long res = 0L; try { jedis = jedisPool.getResource(); res = jedis.msetnx(keysvalues); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 设置key的值,并返回一个旧值 * </p> * * @param key * @param value * @return 旧值 如果key不存在 则返回null */ public String getset(String key, String value) { Jedis jedis = null; String res = null; try { jedis = jedisPool.getResource(); res = jedis.getSet(key, value); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过下标 和key 获取指定下标位置的 value * </p> * * @param key * @param startOffset 开始位置 从0 开始 负数表示从右边开始截取 * @param endOffset * @return 如果没有返回null */ public String getrange(String key, int startOffset, int endOffset) { Jedis jedis = null; String res = null; try { jedis = jedisPool.getResource(); res = jedis.getrange(key, startOffset, endOffset); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key 对value进行加值+1操作,当value不是int类型时会返回错误,当key不存在是则value为1 * </p> * * @param key * @return 加值后的结果 */ public Long incr(String key) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.incr(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key给指定的value加值,如果key不存在,则这是value为该值 * </p> * * @param key * @param integer * @return */ public Long incrBy(String key, Long integer) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.incrBy(key, integer); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 对key的值做减减操作,如果key不存在,则设置key为-1 * </p> * * @param key * @return */ public Long decr(String key) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.decr(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 减去指定的值 * </p> * * @param key * @param integer * @return */ public Long decrBy(String key, Long integer) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.decrBy(key, integer); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key获取value值的长度 * </p> * * @param key * @return 失败返回null */ public Long serlen(String key) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.strlen(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key给field设置指定的值,如果key不存在,则先创建 * </p> * * @param key * @param field 字段 * @param value * @return 如果存在返回0 异常返回null */ public Long hset(String key, String field, String value) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.hset(key, field, value); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key给field设置指定的值,如果key不存在则先创建,如果field已经存在,返回0 * </p> * * @param key * @param field * @param value * @return */ public Long hsetnx(String key, String field, String value) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.hsetnx(key, field, value); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key同时设置 hash的多个field * </p> * * @param key * @param hash * @return 返回OK 异常返回null */ public String hmset(String key, Map<String, String> hash) { Jedis jedis = null; String res = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); res = jedis.hmset(key, hash); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key 和 field 获取指定的 value * </p> * * @param key * @param field * @return 没有返回null */ public String hget(String key, String field) { Jedis jedis = null; String res = null; try { jedis = jedisPool.getResource(); res = jedis.hget(key, field); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key 和 fields 获取指定的value 如果没有对应的value则返回null * </p> * * @param key * @param fields 可以使 一个String 也可以是 String数组 * @return */ public List<String> hmget(String key, String... fields) { Jedis jedis = null; List<String> res = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); res = jedis.hmget(key, fields); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key给指定的field的value加上给定的值 * </p> * * @param key * @param field * @param value * @return */ public Long hincrby(String key, String field, Long value) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.hincrBy(key, field, value); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key和field判断是否有指定的value存在 * </p> * * @param key * @param field * @return */ public Boolean hexists(String key, String field) { Jedis jedis = null; Boolean res = false; try { jedis = jedisPool.getResource(); res = jedis.hexists(key, field); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key返回field的数量 * </p> * * @param key * @return */ public Long hlen(String key) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.hlen(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key 删除指定的 field * </p> * * @param key * @param fields 可以是 一个 field 也可以是 一个数组 * @return */ public Long hdel(String key, String... fields) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.hdel(key, fields); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key返回所有的field * </p> * * @param key * @return */ public Set<String> hkeys(String key) { Jedis jedis = null; Set<String> res = null; try { jedis = jedisPool.getResource(); res = jedis.hkeys(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key返回所有和key有关的value * </p> * * @param key * @return */ public List<String> hvals(String key) { Jedis jedis = null; List<String> res = null; try { jedis = jedisPool.getResource(); res = jedis.hvals(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key获取所有的field和value * </p> * * @param key * @return */ public Map<String, String> hgetall(String key) { Jedis jedis = null; Map<String, String> res = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); res = jedis.hgetAll(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key向list头部添加字符串 * </p> * * @param key * @param strs 可以使一个string 也可以使string数组 * @return 返回list的value个数 */ public Long lpush(String key, String... strs) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); res = jedis.lpush(key, strs); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key向list尾部添加字符串 * </p> * * @param key * @param strs 可以使一个string 也可以使string数组 * @return 返回list的value个数 */ public Long rpush(String key, String... strs) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.rpush(key, strs); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key在list指定的位置之前或者之后 添加字符串元素 * </p> * * @param key * @param where LIST_POSITION枚举类型 * @param pivot list里面的value * @param value 添加的value * @return */ public Long linsert(String key, ListPosition where, String pivot, String value) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.linsert(key, where, pivot, value); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key设置list指定下标位置的value * </p> * <p> * 如果下标超过list里面value的个数则报错 * </p> * * @param key * @param index 从0开始 * @param value * @return 成功返回OK */ public String lset(String key, Long index, String value) { Jedis jedis = null; String res = null; try { jedis = jedisPool.getResource(); res = jedis.lset(key, index, value); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key从对应的list中删除指定的count个 和 value相同的元素 * </p> * * @param key * @param count 当count为0时删除全部 * @param value * @return 返回被删除的个数 */ public Long lrem(String key, long count, String value) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.lrem(key, count, value); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key保留list中从strat下标开始到end下标结束的value值 * </p> * * @param key * @param start * @param end * @return 成功返回OK */ public String ltrim(String key, long start, long end) { Jedis jedis = null; String res = null; try { jedis = jedisPool.getResource(); res = jedis.ltrim(key, start, end); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key从list的头部删除一个value,并返回该value * </p> * * @param key * @return */ synchronized public String lpop(String key) { Jedis jedis = null; String res = null; try { jedis = jedisPool.getResource(); res = jedis.lpop(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key从list尾部删除一个value,并返回该元素 * </p> * * @param key * @return */ synchronized public String rpop(String key) { Jedis jedis = null; String res = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); res = jedis.rpop(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key从一个list的尾部删除一个value并添加到另一个list的头部,并返回该value * </p> * <p> * 如果第一个list为空或者不存在则返回null * </p> * * @param srckey * @param dstkey * @return */ public String rpoplpush(String srckey, String dstkey) { Jedis jedis = null; String res = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); res = jedis.rpoplpush(srckey, dstkey); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key获取list中指定下标位置的value * </p> * * @param key * @param index * @return 如果没有返回null */ public String lindex(String key, long index) { Jedis jedis = null; String res = null; try { jedis = jedisPool.getResource(); res = jedis.lindex(key, index); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key返回list的长度 * </p> * * @param key * @return */ public Long llen(String key) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.llen(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key获取list指定下标位置的value * </p> * <p> * 如果start 为 0 end 为 -1 则返回全部的list中的value * </p> * * @param key * @param start * @param end * @return */ public List<String> lrange(String key, long start, long end) { Jedis jedis = null; List<String> res = null; try { jedis = jedisPool.getResource(); jedis.select(indexdb); res = jedis.lrange(key, start, end); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 将列表 key 下标为 index 的元素的值设置为 value * </p> * * @param key * @param index * @param value * @return 操作成功返回 ok ,否则返回错误信息 */ public String lset(String key, long index, String value) { Jedis jedis = null; try { jedis = jedisPool.getResource(); return jedis.lset(key, index, value); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return null; } /** * <p> * 返回给定排序后的结果 * </p> * * @param key * @param sortingParameters * @return 返回列表形式的排序结果 */ public List<String> sort(String key, SortingParams sortingParameters) { Jedis jedis = null; try { jedis = jedisPool.getResource(); return jedis.sort(key, sortingParameters); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return null; } /** * <p> * 返回排序后的结果,排序默认以数字作为对象,值被解释为双精度浮点数,然后进行比较。 * </p> * * @param key * @return 返回列表形式的排序结果 */ public List<String> sort(String key) { Jedis jedis = null; try { jedis = jedisPool.getResource(); return jedis.sort(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return null; } /** * <p> * 通过key向指定的set中添加value * </p> * * @param key * @param members 可以是一个String 也可以是一个String数组 * @return 添加成功的个数 */ public Long sadd(String key, String... members) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.sadd(key, members); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key删除set中对应的value值 * </p> * * @param key * @param members 可以是一个String 也可以是一个String数组 * @return 删除的个数 */ public Long srem(String key, String... members) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.srem(key, members); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key随机删除一个set中的value并返回该值 * </p> * * @param key * @return */ public String spop(String key) { Jedis jedis = null; String res = null; try { jedis = jedisPool.getResource(); res = jedis.spop(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key获取set中的差集 * </p> * <p> * 以第一个set为标准 * </p> * * @param keys 可以使一个string 则返回set中所有的value 也可以是string数组 * @return */ public Set<String> sdiff(String... keys) { Jedis jedis = null; Set<String> res = null; try { jedis = jedisPool.getResource(); res = jedis.sdiff(keys); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key获取set中的差集并存入到另一个key中 * </p> * <p> * 以第一个set为标准 * </p> * * @param dstkey 差集存入的key * @param keys 可以使一个string 则返回set中所有的value 也可以是string数组 * @return */ public Long sdiffstore(String dstkey, String... keys) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.sdiffstore(dstkey, keys); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key获取指定set中的交集 * </p> * * @param keys 可以使一个string 也可以是一个string数组 * @return */ public Set<String> sinter(String... keys) { Jedis jedis = null; Set<String> res = null; try { jedis = jedisPool.getResource(); res = jedis.sinter(keys); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key获取指定set中的交集 并将结果存入新的set中 * </p> * * @param dstkey * @param keys 可以使一个string 也可以是一个string数组 * @return */ public Long sinterstore(String dstkey, String... keys) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.sinterstore(dstkey, keys); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key返回所有set的并集 * </p> * * @param keys 可以使一个string 也可以是一个string数组 * @return */ public Set<String> sunion(String... keys) { Jedis jedis = null; Set<String> res = null; try { jedis = jedisPool.getResource(); res = jedis.sunion(keys); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key返回所有set的并集,并存入到新的set中 * </p> * * @param dstkey * @param keys 可以使一个string 也可以是一个string数组 * @return */ public Long sunionstore(String dstkey, String... keys) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.sunionstore(dstkey, keys); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key将set中的value移除并添加到第二个set中 * </p> * * @param srckey 需要移除的 * @param dstkey 添加的 * @param member set中的value * @return */ public Long smove(String srckey, String dstkey, String member) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.smove(srckey, dstkey, member); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key获取set中value的个数 * </p> * * @param key * @return */ public Long scard(String key) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.scard(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key判断value是否是set中的元素 * </p> * * @param key * @param member * @return */ public Boolean sismember(String key, String member) { Jedis jedis = null; Boolean res = null; try { jedis = jedisPool.getResource(); res = jedis.sismember(key, member); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key获取set中随机的value,不删除元素 * </p> * * @param key * @return */ public String srandmember(String key) { Jedis jedis = null; String res = null; try { jedis = jedisPool.getResource(); res = jedis.srandmember(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key获取set中所有的value * </p> * * @param key * @return */ public Set<String> smembers(String key) { Jedis jedis = null; Set<String> res = null; try { jedis = jedisPool.getResource(); res = jedis.smembers(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key向zset中添加value,score,其中score就是用来排序的 * </p> * <p> * 如果该value已经存在则根据score更新元素 * </p> * * @param key * @param score * @param member * @return */ public Long zadd(String key, double score, String member) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.zadd(key, score, member); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 返回有序集 key 中,指定区间内的成员。min=0,max=-1代表所有元素 * </p> * * @param key * @param min * @param max * @return 指定区间内的有序集成员的列表。 */ public Set<String> zrange(String key, long min, long max) { Jedis jedis = null; try { jedis = jedisPool.getResource(); return jedis.zrange(key, min, max); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return null; } /** * <p> * 统计有序集 key 中,值在 min 和 max 之间的成员的数量 * </p> * * @param key * @param min * @param max * @return 值在 min 和 max 之间的成员的数量。异常返回0 */ public Long zcount(String key, double min, double max) { Jedis jedis = null; try { jedis = jedisPool.getResource(); return jedis.zcount(key, min, max); } catch (Exception e) { log.error(e.getMessage()); return 0L; } finally { returnResource(jedisPool, jedis); } } /** * <p> * 为哈希表 key 中的域 field 的值加上增量 increment 。增量也可以为负数,相当于对给定域进行减法操作。 如果 key * 不存在,一个新的哈希表被创建并执行 HINCRBY 命令。如果域 field 不存在,那么在执行命令前,域的值被初始化为 0 。 * 对一个储存字符串值的域 field 执行 HINCRBY 命令将造成一个错误。本操作的值被限制在 64 位(bit)有符号数字表示之内。 * </p> * <p> * 将名称为key的hash中field的value增加integer * </p> * * @param key * @param value * @param increment * @return 执行 HINCRBY 命令之后,哈希表 key 中域 field的值。异常返回0 */ public Long hincrBy(String key, String value, long increment) { Jedis jedis = null; try { jedis = jedisPool.getResource(); return jedis.hincrBy(key, value, increment); } catch (Exception e) { log.error(e.getMessage()); return 0L; } finally { returnResource(jedisPool, jedis); } } /** * <p> * 通过key删除在zset中指定的value * </p> * * @param key * @param members 可以使一个string 也可以是一个string数组 * @return */ public Long zrem(String key, String... members) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.zrem(key, members); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key增加该zset中value的score的值 * </p> * * @param key * @param score * @param member * @return */ public Double zincrby(String key, double score, String member) { Jedis jedis = null; Double res = null; try { jedis = jedisPool.getResource(); res = jedis.zincrby(key, score, member); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key返回zset中value的排名 * </p> * <p> * 下标从小到大排序 * </p> * * @param key * @param member * @return */ public Long zrank(String key, String member) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.zrank(key, member); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key返回zset中value的排名 * </p> * <p> * 下标从大到小排序 * </p> * * @param key * @param member * @return */ public Long zrevrank(String key, String member) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.zrevrank(key, member); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key将获取score从start到end中zset的value * </p> * <p> * socre从大到小排序 * </p> * <p> * 当start为0 end为-1时返回全部 * </p> * * @param key * @param start * @param end * @return */ public Set<String> zrevrange(String key, long start, long end) { Jedis jedis = null; Set<String> res = null; try { jedis = jedisPool.getResource(); res = jedis.zrevrange(key, start, end); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key返回指定score内zset中的value * </p> * * @param key * @param max * @param min * @return */ public Set<String> zrangebyscore(String key, String max, String min) { Jedis jedis = null; Set<String> res = null; try { jedis = jedisPool.getResource(); res = jedis.zrevrangeByScore(key, max, min); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key返回指定score内zset中的value * </p> * * @param key * @param max * @param min * @return */ public Set<String> zrangeByScore(String key, double max, double min) { Jedis jedis = null; Set<String> res = null; try { jedis = jedisPool.getResource(); res = jedis.zrevrangeByScore(key, max, min); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 返回指定区间内zset中value的数量 * </p> * * @param key * @param min * @param max * @return */ public Long zcount(String key, String min, String max) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.zcount(key, min, max); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key返回zset中的value个数 * </p> * * @param key * @return */ public Long zcard(String key) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.zcard(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key获取zset中value的score值 * </p> * * @param key * @param member * @return */ public Double zscore(String key, String member) { Jedis jedis = null; Double res = null; try { jedis = jedisPool.getResource(); res = jedis.zscore(key, member); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key删除给定区间内的元素 * </p> * * @param key * @param start * @param end * @return */ public Long zremrangeByRank(String key, long start, long end) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.zremrangeByRank(key, start, end); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key删除指定score内的元素 * </p> * * @param key * @param start * @param end * @return */ public Long zremrangeByScore(String key, double start, double end) { Jedis jedis = null; Long res = null; try { jedis = jedisPool.getResource(); res = jedis.zremrangeByScore(key, start, end); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 返回满足pattern表达式的所有key * </p> * <p> * keys(*) * </p> * <p> * 返回所有的key * </p> * * @param pattern * @return */ public Set<String> keys(String pattern) { Jedis jedis = null; Set<String> res = null; try { jedis = jedisPool.getResource(); res = jedis.keys(pattern); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } public Set<String> keysBySelect(String pattern, int database) { Jedis jedis = null; Set<String> res = null; try { jedis = jedisPool.getResource(); jedis.select(database); res = jedis.keys(pattern); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * <p> * 通过key判断值得类型 * </p> * * @param key * @return */ public String type(String key) { Jedis jedis = null; String res = null; try { jedis = jedisPool.getResource(); res = jedis.type(key); } catch (Exception e) { log.error(e.getMessage()); } finally { returnResource(jedisPool, jedis); } return res; } /** * 序列化对象 * * @param obj * @return 对象需实现Serializable接口 */ public static byte[] ObjTOSerialize(Object obj) { ObjectOutputStream oos = null; ByteArrayOutputStream byteOut = null; try { byteOut = new ByteArrayOutputStream(); oos = new ObjectOutputStream(byteOut); oos.writeObject(obj); byteOut.flush(); oos.flush(); byte[] bytes = byteOut.toByteArray(); oos.close(); byteOut.close(); return bytes; } catch (Exception e) { } return null; } /** * 反序列化对象 * * @param bytes * @return 对象需实现Serializable接口 */ public static Object unserialize(byte[] bytes) { ByteArrayInputStream bais = null; try { //反序列化 bais = new ByteArrayInputStream(bytes); ObjectInputStream ois = new ObjectInputStream(bais); return ois.readObject(); } catch (Exception e) { } return null; } /** * 返还到连接池 * * @param jedisPool * @param jedis */ public static void returnResource(JedisPool jedisPool, Jedis jedis) { if (jedis != null) { //jedisPool.returnResource(jedis); jedis.close(); } } // public static RedisUtil getRu() { // return ru; // } // // public static void setRu(RedisUtil ru) { // RedisUtil.ru = ru; // } }
SpringCacheConfig:
package com.hbg.common.cache; import com.hbg.common.constants.RedisKeyConstant; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.cache.CacheManager; import org.springframework.cache.annotation.CachingConfigurerSupport; import org.springframework.cache.annotation.EnableCaching; import org.springframework.cache.interceptor.*; 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.serializer.RedisSerializationContext; import org.springframework.data.redis.serializer.StringRedisSerializer; import java.time.Duration; /** * @author zxf * @date 2020/11/5 16:49 */ @Configuration @EnableCaching public class SpringCacheConfig extends CachingConfigurerSupport { @Autowired private RedisTemplate<String, Object> redisTemplate; @Autowired private CacheManager goodsDetailCacheManager; @Autowired private CacheManager defaultCacheManager; @Bean(name = "goodsCacheResolver") public CacheResolver goodsCacheResolver() { return new SimpleCacheResolver(goodsDetailCacheManager); } @Override @Bean(name = "defaultCacheResolver") public CacheResolver cacheResolver() { return new SimpleCacheResolver(defaultCacheManager); } @Bean @Override public CacheErrorHandler errorHandler() { // 用于捕获从Cache中进行CRUD时的异常的回调处理器。 return new SimpleCacheErrorHandler(); } /** * 自定义生成redis-key * * @return */ /* @Override @Bean public KeyGenerator keyGenerator() { return new SimpleKeyGenerator(); }*/ /** * 商品详情用的缓存管理器 * @param redisConnectionFactory * @return */ @Bean public CacheManager goodsDetailCacheManager(RedisConnectionFactory redisConnectionFactory) { return this.goodsDetailCacheManager(redisConnectionFactory, 30L); } @Bean public CacheManager defaultCacheManager(RedisConnectionFactory redisConnectionFactory) { return this.goodsDetailCacheManager(redisConnectionFactory, 24*60L); } /** * 配置缓存管理器 * @param redisConnectionFactory * @param minutes * @return */ private CacheManager goodsDetailCacheManager(RedisConnectionFactory redisConnectionFactory, long minutes) { //缓存配置对象 RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig(); //设置缓存的默认超时时间:30分钟 redisCacheConfiguration = redisCacheConfiguration.entryTtl(Duration.ofMinutes(minutes)) //如果是空值,不缓存 .disableCachingNullValues() //设置key序列化器 .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer())) //设置value序列化器 .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(redisTemplate.getValueSerializer())); return RedisCacheManager .builder(RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory)) .cacheDefaults(redisCacheConfiguration).build(); } }
package com.hbg.common.cache;
import com.hbg.common.constants.RedisKeyConstant;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.*;
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.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;
import java.time.Duration;
/**
* @author zxf
* @date 2020/11/5 16:49
*/
@Configuration
@EnableCaching
public class SpringCacheConfig extends CachingConfigurerSupport {
@Autowired
private RedisTemplate<String, Object> redisTemplate;
@Autowired
private CacheManager goodsDetailCacheManager;
@Autowired
private CacheManager defaultCacheManager;
@Bean(name = "goodsCacheResolver")
public CacheResolver goodsCacheResolver() {
return new SimpleCacheResolver(goodsDetailCacheManager);
}
@Override
@Bean(name = "defaultCacheResolver")
public CacheResolver cacheResolver() {
return new SimpleCacheResolver(defaultCacheManager);
}
@Bean
@Override
public CacheErrorHandler errorHandler() {
// 用于捕获从Cache中进行CRUD时的异常的回调处理器。
return new SimpleCacheErrorHandler();
}
/**
* 自定义生成redis-key
*
* @return
*/
/* @Override
@Bean
public KeyGenerator keyGenerator() {
return new SimpleKeyGenerator();
}*/
/**
* 商品详情用的缓存管理器
* @param redisConnectionFactory
* @return
*/
@Bean
public CacheManager goodsDetailCacheManager(RedisConnectionFactory redisConnectionFactory) {
return this.goodsDetailCacheManager(redisConnectionFactory, 30L);
}
@Bean
public CacheManager defaultCacheManager(RedisConnectionFactory redisConnectionFactory) {
return this.goodsDetailCacheManager(redisConnectionFactory, 24*60L);
}
/**
* 配置缓存管理器
* @param redisConnectionFactory
* @param minutes
* @return
*/
private CacheManager goodsDetailCacheManager(RedisConnectionFactory redisConnectionFactory, long minutes) {
//缓存配置对象
RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig();
//设置缓存的默认超时时间:30分钟
redisCacheConfiguration = redisCacheConfiguration.entryTtl(Duration.ofMinutes(minutes))
//如果是空值,不缓存
.disableCachingNullValues()
//设置key序列化器
.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()))
//设置value序列化器
.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(redisTemplate.getValueSerializer()));
return RedisCacheManager
.builder(RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory))
.cacheDefaults(redisCacheConfiguration).build();
}
}
实在看不懂,可以联系我购买源码-保证实用- 一次服务10元。