目录
redis相关命令总结
redis常用数据结构的操作命令可以参考:Redis命令总结
导入Jar包
Java官方推荐使用Jedis来管理redis,所以这里本文将会使用Jedis。
如果创建Maven项目,那么在pom.xml中添加下面的依赖:
<dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>2.10.2</version> <type>jar</type> <scope>compile</scope> </dependency>
如果是手动导入Jar包,则需要下面三个Jar包(已经注明了groupId、artifactId、version):
redis/clients/jedis/2.10.2/jedis-2.10.2.jar org/slf4j/slf4j-api/1.7.22/slf4j-api-1.7.22.jar org/apache/commons/commons-pool2/2.4.3/commons-pool2-2.4.3.jar
创建Redis连接
在Jedis中,创建Redis,只需要创建Jedis对象即可,下面是创建Jedis常用的构造方法:
Jedis() Jedis(String host) Jedis(String host, int port)
上面的三个构造方法是最简单的创建Jedis对象的方式,如果使用redis连接池,可以参考文章:
Jedis API整理
下面将会列举出常用的Jedis API,这些API和redis原始的命令几乎没有区别,只需要大概注意一下返回值即可。
另外还需要注意的是,下面的所有API都是通过Jedis对象进行调用的,也就是说,下面的所有API都是Jedis的实例方法。
普通类型(String)
Redis命令 | Jedis对应的API |
set key value | String set(String key, String value) |
get key | String get(String key) |
exists key | Long exists(String... keys) |
del key | Long del(String key) |
type key | String type(String key) |
incr key | Long incr(String key) |
incrby key increment | Long incrBy(String key, long increment) |
incrbyfloat key incrment | Double incrByFloat(String key, double increment) |
decr key | Long decr(String key) |
decrby key decrment | Long decrBy(String key, long decrement) |
append key value | Long append(String key, String value) |
strlen key | Long strlen(String key) |
mset key1 value1 key2 value2 | String mset(String k1, String v1, String k2, String v2...) |
mget key1 key2... | List<String> mget(String k1, String k2) |
散列类型(hash)
Redis命令 | Jedis对应的API |
hset key field value | Long hset(String key, String field, String value) Long hset(String key, Map<String,String> map) |
hsetnx key field value | Long hsetnx(String key, String field, String value) String hmset(String key, Map<String,String> hash) |
hmset key field1 value1 field2 value2 | String hmset(String key, Map<String,String> hash) |
hget key field | String hget(String key, String field) |
hmget key field1 field2 | List<String> hmget(String key, String k1, String k2...) |
hgetall key | Map<String,String> hgetAll(String key) |
hexists key field | Boolean hexists(String key, String field) |
hincrby key field increment | Long hincrBy(String key, String field, long value) |
hincrbyfloat key field increment | Double hincrByFloat(String key, String field, double value) |
hdel key field | Long hdel(String key, String... fields) |
hkeys key | Set<String> hkeys(String key) |
hvals key | List<String> hvals(String key) |
hlen key | Long hlen(String key) |
列表类型(list)
Redis命令 | Jedis对应的API |
lpush key value1 value2 | Long lpush(String key, String... strings) |
rpush key value1 value2 | Long rpush(String key, String... strings) |
lpop key | String lpop(String key) |
rpop key | String rpop(String key) |
llen | Long llen(String key) |
lrange key start end | List<String> lrange(String key, long start, long stop) |
lrange key 0 -1 | |
lindex key index | String lindex(String key, long index) |
lset key index value | String lset(String key, long index, String value) |
ltrim key start end | String ltrim(String key, long start, long stop) |
linsert key before/after oneValue value | Long linsert(String key, ListPosition where, String pivot, String value) |
rpoplpush key1 key2 | String rpoplpush(String srckey, String dstkey) |
lrem key count value | Long lrem(String key, long count, String value) |
无序集合类型(set)
Redis命令 | Jedis对应的API |
sadd key member1 member2 | Long sadd(String key, String... members) |
srem key member1 member2 | Long srem(String key, String... members) |
smembers key | Set<String> smembers(String key) |
sismember key member | Boolean sismember(String key, String member) |
sdiff key1 key2 ... | Set<String> sdiff(String... keys) |
sinter key1 key2... | Set<String> sinter(String... keys) |
sunion key1 key2... | Set<String> sunion(String... keys) |
scard key | Long scard(String key) |
srandmember key [count] | String srandmember(String key) List<String> srandmember(String key, int count) |
spop key [count] | String spop(String key) Set<String> spop(String key, long count) |
有序集合类型(zset)
Redis命令 | Jedis对应的API |
zadd key score member | Long zadd(String key, double score, String member) Long zadd(String key, Map<String,Double> scoreMembers) |
zscore key member | Double zscore(String key, String member) |
zrange key start end | Set<String> zrange(String key, long start, long stop) |
zrevrange key start end | Set<String> zrevrange(String key, long start, long stop) |
zrangebyscore key min max[withscore][limit offset count] |
Set<String> zrangeByScore(String key, double min, double max) Set<String> zrangeByScore(String key, String min, String max) Set<String> zrangeByScore(String key, String min, String max, int offset, int count) |
zincrby key increment member | Double zincrby(String key, double increment, String member) |
zcard key | Long zcard(String key) |
zcount key min max | Long zcount(String key, String min, String max) Long zcount(String key, double min, double max) |
zrem key member1 member2... | Long zrem(String key, String... members) |
zremrangebyrank key start end | Long zremrangeByRank(String key, long start, long stop) |
zremrangebyscore key min max | Long zremrangeByScore(String key, double min, double max) Long zremrangeByScore(String key, String min, String max) |
zrank key member | Long zrank(String key, String member) |