这篇文章给大家分享的是有关Jedis对redis五大类型的操作示例的内容。小编觉得挺实用的，因此分享给大家做个参考，一起跟随小编过来看看吧。

Jedis对redis的五大类型的操作：字符串、列表、散列、集合、有序集合。

##JedisUtil
这里的测试用例采用junit4进行运行，准备代码如下：

privatestaticfinalStringipAddr="10.10.195.112";privatestaticfinalintport=6379;privatestaticJedisjedis=null;@BeforeClasspublicstaticvoidinit(){jedis=JedisUtil.getInstance().getJedis(ipAddr,port);}@AfterClasspublicstaticvoidclose(){JedisUtil.getInstance().closeJedis(jedis,ipAddr,port);}

其中JedisUtil是对jedis做的简单封装，代码如下：

importorg.apache.log4j.Logger;importjava.util.HashMap;importjava.util.Map;importredis.clients.jedis.Jedis;importredis.clients.jedis.JedisPool;importredis.clients.jedis.JedisPoolConfig;publicclassJedisUtil{privateLoggerlogger=Logger.getLogger(this.getClass().getName());privateJedisUtil(){}privatestaticclassRedisUtilHolder{privatestaticfinalJedisUtilinstance=newJedisUtil();}publicstaticJedisUtilgetInstance(){returnRedisUtilHolder.instance;}privatestaticMap<String,JedisPool>maps=newHashMap<String,JedisPool>();privatestaticJedisPoolgetPool(Stringip,intport){Stringkey=ip+":"+port;JedisPoolpool=null;if(!maps.containsKey(key)){JedisPoolConfigconfig=newJedisPoolConfig();config.setMaxActive(RedisConfig.MAX_ACTIVE);config.setMaxIdle(RedisConfig.MAX_IDLE);config.setMaxWait(RedisConfig.MAX_WAIT);config.setTestOnBorrow(true);config.setTestOnReturn(true);pool=newJedisPool(config,ip,port,RedisConfig.TIMEOUT);maps.put(key,pool);}else{pool=maps.get(key);}returnpool;}publicJedisgetJedis(Stringip,intport){Jedisjedis=null;intcount=0;do{try{jedis=getPool(ip,port).getResource();}catch(Exceptione){logger.error("getredismaster1failed!",e);getPool(ip,port).returnBrokenResource(jedis);}}while(jedis==null&&count<RedisConfig.RETRY_NUM);returnjedis;}publicvoidcloseJedis(Jedisjedis,Stringip,intport){if(jedis!=null){getPool(ip,port).returnResource(jedis);}}}publicclassRedisConfig{//可用连接实例的最大数目，默认值为8；//如果赋值为-1，则表示不限制；如果pool已经分配了maxActive个jedis实例，则此时pool的状态为exhausted(耗尽)。publicstaticintMAX_ACTIVE=1024;//控制一个pool最多有多少个状态为idle(空闲的)的jedis实例，默认值也是8。publicstaticintMAX_IDLE=200;//等待可用连接的最大时间，单位毫秒，默认值为-1，表示永不超时。如果超过等待时间，则直接抛出JedisConnectionException；publicstaticintMAX_WAIT=10000;publicstaticintTIMEOUT=10000;publicstaticintRETRY_NUM=5;}

##键操作

@TestpublicvoidtestKey()throwsInterruptedException{System.out.println("清空数据："+jedis.flushDB());System.out.println("判断某个键是否存在："+jedis.exists("username"));System.out.println("新增<'username','zzh'>的键值对："+jedis.set("username","zzh"));System.out.println(jedis.exists("name"));System.out.println("新增<'password','password'>的键值对："+jedis.set("password","password"));System.out.print("系统中所有的键如下：");Set<String>keys=jedis.keys("*");System.out.println(keys);System.out.println("删除键password:"+jedis.del("password"));System.out.println("判断键password是否存在："+jedis.exists("password"));System.out.println("设置键username的过期时间为5s:"+jedis.expire("username",5));TimeUnit.SECONDS.sleep(2);System.out.println("查看键username的剩余生存时间："+jedis.ttl("username"));System.out.println("移除键username的生存时间："+jedis.persist("username"));System.out.println("查看键username的剩余生存时间："+jedis.ttl("username"));System.out.println("查看键username所存储的值的类型："+jedis.type("username"));}

输出结果：

清空数据：OK判断某个键是否存在：false新增<'username','zzh'>的键值对：OKfalse新增<'password','password'>的键值对：OK系统中所有的键如下：[username,password]删除键password:1判断键password是否存在：false设置键username的过期时间为5s:1查看键username的剩余生存时间：3移除键username的生存时间：1查看键username的剩余生存时间：-1查看键username所存储的值的类型：string

##字符串操作
在Redis里面，字符串可以存储三种类型的值：

字节串(byte string)

整数

浮点数

###字节串

@TestpublicvoidtestString()throwsInterruptedException{jedis.flushDB();System.out.println("===========增加数据===========");System.out.println(jedis.set("key1","value1"));System.out.println(jedis.set("key2","value2"));System.out.println(jedis.set("key3","value3"));System.out.println("删除键key2:"+jedis.del("key2"));System.out.println("获取键key2:"+jedis.get("key2"));System.out.println("修改key1:"+jedis.set("key1","value1Changed"));System.out.println("获取key1的值："+jedis.get("key1"));System.out.println("在key3后面加入值："+jedis.append("key3","End"));System.out.println("key3的值："+jedis.get("key3"));System.out.println("增加多个键值对："+jedis.mset("key01","value01","key02","value02","key03","value03"));System.out.println("获取多个键值对："+jedis.mget("key01","key02","key03"));System.out.println("获取多个键值对："+jedis.mget("key01","key02","key03","key04"));System.out.println("删除多个键值对："+jedis.del(newString[]{"key01","key02"}));System.out.println("获取多个键值对："+jedis.mget("key01","key02","key03"));jedis.flushDB();System.out.println("===========新增键值对防止覆盖原先值==============");System.out.println(jedis.setnx("key1","value1"));System.out.println(jedis.setnx("key2","value2"));System.out.println(jedis.setnx("key2","value2-new"));System.out.println(jedis.get("key1"));System.out.println(jedis.get("key2"));System.out.println("===========新增键值对并设置有效时间=============");System.out.println(jedis.setex("key3",2,"value3"));System.out.println(jedis.get("key3"));TimeUnit.SECONDS.sleep(3);System.out.println(jedis.get("key3"));System.out.println("===========获取原值，更新为新值==========");//GETSETisanatomicsetthisvalueandreturntheoldvaluecommand.System.out.println(jedis.getSet("key2","key2GetSet"));System.out.println(jedis.get("key2"));System.out.println("获得key2的值的字串："+jedis.getrange("key2",2,4));}

输出结果：

===========增加数据===========OKOKOK删除键key2:1获取键key2:null修改key1:OK获取key1的值：value1Changed在key3后面加入值：9key3的值：value3End增加多个键值对：OK获取多个键值对：[value01,value02,value03]获取多个键值对：[value01,value02,value03,null]删除多个键值对：2获取多个键值对：[null,null,value03]===========新增键值对防止覆盖原先值==============110value1value2===========新增键值对并设置有效时间=============OKvalue3null===========获取原值，更新为新值==========value2key2GetSet获得key2的值的字串：y2G

memcached和redis同样有append的操作，但是memcached有prepend的操作，redis中并没有。

###整数和浮点数

@TestpublicvoidtestNumber(){jedis.flushDB();jedis.set("key1","1");jedis.set("key2","2");jedis.set("key3","2.3");System.out.println("key1的值："+jedis.get("key1"));System.out.println("key2的值："+jedis.get("key2"));System.out.println("key1的值加1："+jedis.incr("key1"));System.out.println("获取key1的值："+jedis.get("key1"));System.out.println("key2的值减1："+jedis.decr("key2"));System.out.println("获取key2的值："+jedis.get("key2"));System.out.println("将key1的值加上整数5："+jedis.incrBy("key1",5));System.out.println("获取key1的值："+jedis.get("key1"));System.out.println("将key2的值减去整数5："+jedis.decrBy("key2",5));System.out.println("获取key2的值："+jedis.get("key2"));}

输出结果：

key1的值：1key2的值：2key1的值加1：2获取key1的值：2key2的值减1：1获取key2的值：1将key1的值加上整数5：7获取key1的值：7将key2的值减去整数5：-4获取key2的值：-4

在redis2.6或以上版本中有这个命令：incrbyfloat，即将键存储的值加上浮点数amount，jedis-2.1.0中不支持这一操作。

##列表
@Test public void testList()
{
jedis.flushDB();
System.out.println("=添加一个list=");
jedis.lpush(“collections”, “ArrayList”, “Vector”, “Stack”, “HashMap”, “WeakHashMap”, “LinkedHashMap”);
jedis.lpush(“collections”, “HashSet”);
jedis.lpush(“collections”, “TreeSet”);
jedis.lpush(“collections”, “TreeMap”);
System.out.println(“collections的内容：”+jedis.lrange(“collections”, 0, -1));//-1代表倒数第一个元素，-2代表倒数第二个元素
System.out.println(“collections区间0-3的元素：”+jedis.lrange(“collections”,0,3));
System.out.println("=");
// 删除列表指定的值 ，第二个参数为删除的个数（有重复时），后add进去的值先被删，类似于出栈
System.out.println(“删除指定元素个数：”+jedis.lrem(“collections”, 2, “HashMap”));
System.out.println(“collections的内容：”+jedis.lrange(“collections”, 0, -1));
System.out.println(“删除下表0-3区间之外的元素：”+jedis.ltrim(“collections”, 0, 3));
System.out.println(“collections的内容：”+jedis.lrange(“collections”, 0, -1));
System.out.println(“collections列表出栈（左端）：”+jedis.lpop(“collections”));
System.out.println(“collections的内容：”+jedis.lrange(“collections”, 0, -1));
System.out.println(“collections添加元素，从列表右端，与lpush相对应：”+jedis.rpush(“collections”, “EnumMap”));
System.out.println(“collections的内容：”+jedis.lrange(“collections”, 0, -1));
System.out.println(“collections列表出栈（右端）：”+jedis.rpop(“collections”));
System.out.println(“collections的内容：”+jedis.lrange(“collections”, 0, -1));
System.out.println(“修改collections指定下标1的内容：”+jedis.lset(“collections”, 1, “LinkedArrayList”));
System.out.println(“collections的内容：”+jedis.lrange(“collections”, 0, -1));
System.out.println("=");
System.out.println(“collections的长度：”+jedis.llen(“collections”));
System.out.println(“获取collections下标为2的元素：”+jedis.lindex(“collections”, 2));
System.out.println("===============================");
jedis.lpush(“sortedList”, “3”,“6”,“2”,“0”,“7”,“4”);
System.out.println(“sortedList排序前：”+jedis.lrange(“sortedList”, 0, -1));
System.out.println(jedis.sort(“sortedList”));
System.out.println(“sortedList排序后：”+jedis.lrange(“sortedList”, 0, -1));
}
输出结果：

===========添加一个list===========collections的内容：[TreeMap,TreeSet,HashSet,LinkedHashMap,WeakHashMap,HashMap,Stack,Vector,ArrayList]collections区间0-3的元素：[TreeMap,TreeSet,HashSet,LinkedHashMap]===============================删除指定元素个数：1collections的内容：[TreeMap,TreeSet,HashSet,LinkedHashMap,WeakHashMap,Stack,Vector,ArrayList]删除下表0-3区间之外的元素：OKcollections的内容：[TreeMap,TreeSet,HashSet,LinkedHashMap]collections列表出栈（左端）：TreeMapcollections的内容：[TreeSet,HashSet,LinkedHashMap]collections添加元素，从列表右端，与lpush相对应：4collections的内容：[TreeSet,HashSet,LinkedHashMap,EnumMap]collections列表出栈（右端）：EnumMapcollections的内容：[TreeSet,HashSet,LinkedHashMap]修改collections指定下标1的内容：OKcollections的内容：[TreeSet,LinkedArrayList,LinkedHashMap]===============================collections的长度：3获取collections下标为2的元素：LinkedHashMap===============================sortedList排序前：[4,7,0,2,6,3][0,2,3,4,6,7]sortedList排序后：[4,7,0,2,6,3]

Redis中还有阻塞式的列表弹出命令以及在列表之间移动元素的命令：blpop, brpop, rpoplpush, brpoplpush等。

##集合（Set）

@TestpublicvoidtestSet(){jedis.flushDB();System.out.println("============向集合中添加元素============");System.out.println(jedis.sadd("eleSet","e1","e2","e4","e3","e0","e8","e7","e5"));System.out.println(jedis.sadd("eleSet","e6"));System.out.println(jedis.sadd("eleSet","e6"));System.out.println("eleSet的所有元素为："+jedis.smembers("eleSet"));System.out.println("删除一个元素e0："+jedis.srem("eleSet","e0"));System.out.println("eleSet的所有元素为："+jedis.smembers("eleSet"));System.out.println("删除两个元素e7和e6："+jedis.srem("eleSet","e7","e6"));System.out.println("eleSet的所有元素为："+jedis.smembers("eleSet"));System.out.println("随机的移除集合中的一个元素："+jedis.spop("eleSet"));System.out.println("随机的移除集合中的一个元素："+jedis.spop("eleSet"));System.out.println("eleSet的所有元素为："+jedis.smembers("eleSet"));System.out.println("eleSet中包含元素的个数："+jedis.scard("eleSet"));System.out.println("e3是否在eleSet中："+jedis.sismember("eleSet","e3"));System.out.println("e1是否在eleSet中："+jedis.sismember("eleSet","e1"));System.out.println("e1是否在eleSet中："+jedis.sismember("eleSet","e5"));System.out.println("=================================");System.out.println(jedis.sadd("eleSet1","e1","e2","e4","e3","e0","e8","e7","e5"));System.out.println(jedis.sadd("eleSet2","e1","e2","e4","e3","e0","e8"));System.out.println("将eleSet1中删除e1并存入eleSet3中："+jedis.smove("eleSet1","eleSet3","e1"));System.out.println("将eleSet1中删除e2并存入eleSet3中："+jedis.smove("eleSet1","eleSet3","e2"));System.out.println("eleSet1中的元素："+jedis.smembers("eleSet1"));System.out.println("eleSet3中的元素："+jedis.smembers("eleSet3"));System.out.println("============集合运算=================");System.out.println("eleSet1中的元素："+jedis.smembers("eleSet1"));System.out.println("eleSet2中的元素："+jedis.smembers("eleSet2"));System.out.println("eleSet1和eleSet2的交集:"+jedis.sinter("eleSet1","eleSet2"));System.out.println("eleSet1和eleSet2的并集:"+jedis.sunion("eleSet1","eleSet2"));System.out.println("eleSet1和eleSet2的差集:"+jedis.sdiff("eleSet1","eleSet2"));//eleSet1中有，eleSet2中没有}

输出结果：

============向集合中添加元素============810eleSet的所有元素为：[e3,e4,e1,e2,e0,e8,e7,e6,e5]删除一个元素e0：1eleSet的所有元素为：[e3,e4,e1,e2,e8,e7,e6,e5]删除两个元素e7和e6：2eleSet的所有元素为：[e3,e4,e1,e2,e8,e5]随机的移除集合中的一个元素：e5随机的移除集合中的一个元素：e2eleSet的所有元素为：[e3,e4,e1,e8]eleSet中包含元素的个数：4e3是否在eleSet中：truee1是否在eleSet中：truee1是否在eleSet中：false=================================86将eleSet1中删除e1并存入eleSet3中：1将eleSet1中删除e2并存入eleSet3中：1eleSet1中的元素：[e3,e4,e0,e8,e7,e5]eleSet3中的元素：[e1,e2]============集合运算=================eleSet1中的元素：[e3,e4,e0,e8,e7,e5]eleSet2中的元素：[e3,e4,e1,e2,e0,e8]eleSet1和eleSet2的交集:[e3,e4,e0,e8]eleSet1和eleSet2的并集:[e3,e4,e1,e2,e0,e8,e7,e5]eleSet1和eleSet2的差集:[e7,e5]

关于Set还有一些其他命令：srandmember, sdiffstore, sinterstore, sunionstore等。

##散列

@TestpublicvoidtestHash(){jedis.flushDB();Map<String,String>map=newHashMap<>();map.put("key1","value1");map.put("key2","value2");map.put("key3","value3");map.put("key4","value4");jedis.hmset("hash",map);jedis.hset("hash","key5","value5");System.out.println("散列hash的所有键值对为："+jedis.hgetAll("hash"));//returnMap<String,String>System.out.println("散列hash的所有键为："+jedis.hkeys("hash"));//returnSet<String>System.out.println("散列hash的所有值为："+jedis.hvals("hash"));//returnList<String>System.out.println("将key6保存的值加上一个整数，如果key6不存在则添加key6："+jedis.hincrBy("hash","key6",6));System.out.println("散列hash的所有键值对为："+jedis.hgetAll("hash"));System.out.println("将key6保存的值加上一个整数，如果key6不存在则添加key6："+jedis.hincrBy("hash","key6",3));System.out.println("散列hash的所有键值对为："+jedis.hgetAll("hash"));System.out.println("删除一个或者多个键值对："+jedis.hdel("hash","key2"));System.out.println("散列hash的所有键值对为："+jedis.hgetAll("hash"));System.out.println("散列hash中键值对的个数："+jedis.hlen("hash"));System.out.println("判断hash中是否存在key2："+jedis.hexists("hash","key2"));System.out.println("判断hash中是否存在key3："+jedis.hexists("hash","key3"));System.out.println("获取hash中的值："+jedis.hmget("hash","key3"));System.out.println("获取hash中的值："+jedis.hmget("hash","key3","key4"));}

输出结果：

散列hash的所有键值对为：{key4=value4,key3=value3,key5=value5,key2=value2,key1=value1}散列hash的所有键为：[key4,key3,key5,key2,key1]散列hash的所有值为：[value4,value3,value1,value2,value5]将key6保存的值加上一个整数，如果key6不存在则添加key6：6散列hash的所有键值对为：{key4=value4,key3=value3,key6=6,key5=value5,key2=value2,key1=value1}将key6保存的值加上一个整数，如果key6不存在则添加key6：9散列hash的所有键值对为：{key4=value4,key3=value3,key6=9,key5=value5,key2=value2,key1=value1}删除一个或者多个键值对：1散列hash的所有键值对为：{key4=value4,key3=value3,key6=9,key5=value5,key1=value1}散列hash中键值对的个数：5判断hash中是否存在key2：false判断hash中是否存在key3：true获取hash中的值：[value3]获取hash中的值：[value3,value4]

##有序集合

@TestpublicvoidtestSortedSet(){jedis.flushDB();Map<Double,String>map=newHashMap<>();map.put(1.2,"key2");map.put(4.0,"key3");map.put(5.0,"key4");map.put(0.2,"key5");System.out.println(jedis.zadd("zset",3,"key1"));System.out.println(jedis.zadd("zset",map));System.out.println("zset中的所有元素："+jedis.zrange("zset",0,-1));System.out.println("zset中的所有元素："+jedis.zrangeWithScores("zset",0,-1));System.out.println("zset中的所有元素："+jedis.zrangeByScore("zset",0,100));System.out.println("zset中的所有元素："+jedis.zrangeByScoreWithScores("zset",0,100));System.out.println("zset中key2的分值："+jedis.zscore("zset","key2"));System.out.println("zset中key2的排名："+jedis.zrank("zset","key2"));System.out.println("删除zset中的元素key3："+jedis.zrem("zset","key3"));System.out.println("zset中的所有元素："+jedis.zrange("zset",0,-1));System.out.println("zset中元素的个数："+jedis.zcard("zset"));System.out.println("zset中分值在1-4之间的元素的个数："+jedis.zcount("zset",1,4));System.out.println("key2的分值加上5："+jedis.zincrby("zset",5,"key2"));System.out.println("key3的分值加上4："+jedis.zincrby("zset",4,"key3"));System.out.println("zset中的所有元素："+jedis.zrange("zset",0,-1));}

输出结果：

14zset中的所有元素：[key5,key2,key1,key3,key4]zset中的所有元素：[[[107,101,121,53],0.2],[[107,101,121,50],1.2],[[107,101,121,49],3.0],[[107,101,121,51],4.0],[[107,101,121,52],5.0]]zset中的所有元素：[key5,key2,key1,key3,key4]zset中的所有元素：[[[107,101,121,53],0.2],[[107,101,121,50],1.2],[[107,101,121,49],3.0],[[107,101,121,51],4.0],[[107,101,121,52],5.0]]zset中key2的分值：1.2zset中key2的排名：1删除zset中的元素key3：1zset中的所有元素：[key5,key2,key1,key4]zset中元素的个数：4zset中分值在1-4之间的元素的个数：2key2的分值加上5：6.2key3的分值加上4：4.0zset中的所有元素：[key5,key1,key3,key4,key2]

有序集合还有诸如zinterstore, zunionstore, zremrangebyscore, zremrangebyrank, zrevrank, zrevrange, zrangebyscore等命令。

##排序sort

@TestpublicvoidtestSort(){jedis.flushDB();jedis.lpush("collections","ArrayList","Vector","Stack","HashMap","WeakHashMap","LinkedHashMap");System.out.println("collections的内容："+jedis.lrange("collections",0,-1));SortingParamssortingParameters=newSortingParams();System.out.println(jedis.sort("collections",sortingParameters.alpha()));System.out.println("===============================");jedis.lpush("sortedList","3","6","2","0","7","4");System.out.println("sortedList排序前："+jedis.lrange("sortedList",0,-1));System.out.println("升序："+jedis.sort("sortedList",sortingParameters.asc()));System.out.println("升序："+jedis.sort("sortedList",sortingParameters.desc()));System.out.println("===============================");jedis.lpush("userlist","33");jedis.lpush("userlist","22");jedis.lpush("userlist","55");jedis.lpush("userlist","11");jedis.hset("user:66","name","66");jedis.hset("user:55","name","55");jedis.hset("user:33","name","33");jedis.hset("user:22","name","79");jedis.hset("user:11","name","24");jedis.hset("user:11","add","beijing");jedis.hset("user:22","add","shanghai");jedis.hset("user:33","add","guangzhou");jedis.hset("user:55","add","chongqing");jedis.hset("user:66","add","xi'an");sortingParameters=newSortingParams();sortingParameters.get("user:*->name");sortingParameters.get("user:*->add");System.out.println(jedis.sort("userlist",sortingParameters));}

输出结果：

collections的内容：[LinkedHashMap,WeakHashMap,HashMap,Stack,Vector,ArrayList][ArrayList,HashMap,LinkedHashMap,Stack,Vector,WeakHashMap]===============================sortedList排序前：[4,7,0,2,6,3]升序：[0,2,3,4,6,7]升序：[7,6,4,3,2,0]===============================[24,beijing,79,shanghai,33,guangzhou,55,chongqing]

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