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();
}
}