通過前一篇《redis的簡(jiǎn)單使用》的簡(jiǎn)單介紹，本篇主要闡述Jedis對(duì)redis的五大類型的操作：字符串、列表、散列、集合、有序集合。

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歡迎跳轉(zhuǎn)到本文的原文鏈接：https://honeypps.com/backend/how-to-use-jedis/

##JedisUtil
這里的測(cè)試用例采用junit4進(jìn)行運(yùn)行，準(zhǔn)備代碼如下：

private static final String ipAddr = "10.10.195.112";private static final int port = 6379;private static Jedis jedis= null;@BeforeClasspublic static void init(){jedis = JedisUtil.getInstance().getJedis(ipAddr, port);}@AfterClasspublic static void close(){JedisUtil.getInstance().closeJedis(jedis,ipAddr, port);}

其中JedisUtil是對(duì)jedis做的簡(jiǎn)單封裝，代碼如下：

import org.apache.log4j.Logger;import java.util.HashMap; import java.util.Map;import redis.clients.jedis.Jedis; import redis.clients.jedis.JedisPool; import redis.clients.jedis.JedisPoolConfig;public class JedisUtil {private Logger logger = Logger.getLogger(this.getClass().getName());private JedisUtil(){}private static class RedisUtilHolder{private static final JedisUtil instance = new JedisUtil();}public static JedisUtil getInstance(){return RedisUtilHolder.instance;}private static Map<String,JedisPool> maps = new HashMap<String,JedisPool>();private static JedisPool getPool(String ip, int port){String key = ip+":"+port;JedisPool pool = null;if(!maps.containsKey(key)){JedisPoolConfig config = new JedisPoolConfig();config.setMaxActive(RedisConfig.MAX_ACTIVE);config.setMaxIdle(RedisConfig.MAX_IDLE);config.setMaxWait(RedisConfig.MAX_WAIT);config.setTestOnBorrow(true);config.setTestOnReturn(true);pool = new JedisPool(config,ip,port,RedisConfig.TIMEOUT);maps.put(key, pool);}else{pool = maps.get(key);}return pool; }public Jedis getJedis(String ip, int port){Jedis jedis = null;int count = 0;do{try{jedis = getPool(ip,port).getResource();}catch (Exception e){logger.error("get redis master1 failed!",e);getPool(ip,port).returnBrokenResource(jedis);}}while(jedis == null && count<RedisConfig.RETRY_NUM);return jedis;}public void closeJedis(Jedis jedis, String ip, int port){if(jedis != null){getPool(ip,port).returnResource(jedis);}} }public class RedisConfig {//可用連接實(shí)例的最大數(shù)目，默認(rèn)值為8；//如果賦值為-1，則表示不限制；如果pool已經(jīng)分配了maxActive個(gè)jedis實(shí)例，則此時(shí)pool的狀態(tài)為exhausted(耗盡)。public static int MAX_ACTIVE = 1024;//控制一個(gè)pool最多有多少個(gè)狀態(tài)為idle(空閑的)的jedis實(shí)例，默認(rèn)值也是8。public static int MAX_IDLE = 200;//等待可用連接的最大時(shí)間，單位毫秒，默認(rèn)值為-1，表示永不超時(shí)。如果超過等待時(shí)間，則直接拋出JedisConnectionException；public static int MAX_WAIT = 10000;public static int TIMEOUT = 10000;public static int RETRY_NUM = 5; }

##鍵操作

@Test public void testKey() throws InterruptedException{System.out.println("清空數(shù)據(jù)："+jedis.flushDB());System.out.println("判斷某個(gè)鍵是否存在："+jedis.exists("username"));System.out.println("新增<'username','zzh'>的鍵值對(duì)："+jedis.set("username", "zzh"));System.out.println(jedis.exists("name"));System.out.println("新增<'password','password'>的鍵值對(duì)："+jedis.set("password", "password"));System.out.print("系統(tǒng)中所有的鍵如下：");Set<String> keys = jedis.keys("*");System.out.println(keys);System.out.println("刪除鍵password:"+jedis.del("password"));System.out.println("判斷鍵password是否存在："+jedis.exists("password"));System.out.println("設(shè)置鍵username的過期時(shí)間為5s:"+jedis.expire("username", 5));TimeUnit.SECONDS.sleep(2);System.out.println("查看鍵username的剩余生存時(shí)間："+jedis.ttl("username"));System.out.println("移除鍵username的生存時(shí)間："+jedis.persist("username"));System.out.println("查看鍵username的剩余生存時(shí)間："+jedis.ttl("username"));System.out.println("查看鍵username所存儲(chǔ)的值的類型："+jedis.type("username"));}

輸出結(jié)果：

清空數(shù)據(jù)：OK 判斷某個(gè)鍵是否存在：false 新增<'username','zzh'>的鍵值對(duì)：OK false 新增<'password','password'>的鍵值對(duì)：OK 系統(tǒng)中所有的鍵如下：[username, password] 刪除鍵password:1 判斷鍵password是否存在：false 設(shè)置鍵username的過期時(shí)間為5s:1 查看鍵username的剩余生存時(shí)間：3 移除鍵username的生存時(shí)間：1 查看鍵username的剩余生存時(shí)間：-1 查看鍵username所存儲(chǔ)的值的類型：string

##字符串操作
在Redis里面，字符串可以存儲(chǔ)三種類型的值：

• 字節(jié)串(byte string)
• 整數(shù)
• 浮點(diǎn)數(shù)

###字節(jié)串

@Test public void testString() throws InterruptedException{jedis.flushDB();System.out.println("===========增加數(shù)據(jù)===========");System.out.println(jedis.set("key1","value1"));System.out.println(jedis.set("key2","value2"));System.out.println(jedis.set("key3", "value3"));System.out.println("刪除鍵key2:"+jedis.del("key2"));System.out.println("獲取鍵key2:"+jedis.get("key2"));System.out.println("修改key1:"+jedis.set("key1", "value1Changed"));System.out.println("獲取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("增加多個(gè)鍵值對(duì)："+jedis.mset("key01","value01","key02","value02","key03","value03"));System.out.println("獲取多個(gè)鍵值對(duì)："+jedis.mget("key01","key02","key03"));System.out.println("獲取多個(gè)鍵值對(duì)："+jedis.mget("key01","key02","key03","key04"));System.out.println("刪除多個(gè)鍵值對(duì)："+jedis.del(new String[]{"key01","key02"}));System.out.println("獲取多個(gè)鍵值對(duì)："+jedis.mget("key01","key02","key03"));jedis.flushDB();System.out.println("===========新增鍵值對(duì)防止覆蓋原先值==============");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("===========新增鍵值對(duì)并設(shè)置有效時(shí)間=============");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("===========獲取原值，更新為新值==========");//GETSET is an atomic set this value and return the old value command.System.out.println(jedis.getSet("key2", "key2GetSet"));System.out.println(jedis.get("key2"));System.out.println("獲得key2的值的字串："+jedis.getrange("key2", 2, 4));}

輸出結(jié)果：

===========增加數(shù)據(jù)=========== OK OK OK 刪除鍵key2:1 獲取鍵key2:null 修改key1:OK 獲取key1的值：value1Changed 在key3后面加入值：9 key3的值：value3End 增加多個(gè)鍵值對(duì)：OK 獲取多個(gè)鍵值對(duì)：[value01, value02, value03] 獲取多個(gè)鍵值對(duì)：[value01, value02, value03, null] 刪除多個(gè)鍵值對(duì)：2 獲取多個(gè)鍵值對(duì)：[null, null, value03] ===========新增鍵值對(duì)防止覆蓋原先值============== 1 1 0 value1 value2 ===========新增鍵值對(duì)并設(shè)置有效時(shí)間============= OK value3 null ===========獲取原值，更新為新值========== value2 key2GetSet 獲得key2的值的字串：y2G

memcached和redis同樣有append的操作，但是memcached有prepend的操作，redis中并沒有。

###整數(shù)和浮點(diǎn)數(shù)

@Test public void testNumber(){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("獲取key1的值："+jedis.get("key1"));System.out.println("key2的值減1："+jedis.decr("key2"));System.out.println("獲取key2的值："+jedis.get("key2"));System.out.println("將key1的值加上整數(shù)5："+jedis.incrBy("key1", 5));System.out.println("獲取key1的值："+jedis.get("key1"));System.out.println("將key2的值減去整數(shù)5："+jedis.decrBy("key2", 5));System.out.println("獲取key2的值："+jedis.get("key2"));}

輸出結(jié)果：

key1的值：1 key2的值：2 key1的值加1：2 獲取key1的值：2 key2的值減1：1 獲取key2的值：1 將key1的值加上整數(shù)5：7 獲取key1的值：7 將key2的值減去整數(shù)5：-4 獲取key2的值：-4

在redis2.6或以上版本中有這個(gè)命令：incrbyfloat，即將鍵存儲(chǔ)的值加上浮點(diǎn)數(shù)amount，jedis-2.1.0中不支持這一操作。

##列表
@Test public void testList()
{
jedis.flushDB();
System.out.println("=添加一個(gè)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的內(nèi)容：”+jedis.lrange(“collections”, 0, -1));//-1代表倒數(shù)第一個(gè)元素，-2代表倒數(shù)第二個(gè)元素
System.out.println(“collections區(qū)間0-3的元素：”+jedis.lrange(“collections”,0,3));
System.out.println("=");
// 刪除列表指定的值 ，第二個(gè)參數(shù)為刪除的個(gè)數(shù)（有重復(fù)時(shí)），后add進(jìn)去的值先被刪，類似于出棧
System.out.println(“刪除指定元素個(gè)數(shù)：”+jedis.lrem(“collections”, 2, “HashMap”));
System.out.println(“collections的內(nèi)容：”+jedis.lrange(“collections”, 0, -1));
System.out.println(“刪除下表0-3區(qū)間之外的元素：”+jedis.ltrim(“collections”, 0, 3));
System.out.println(“collections的內(nèi)容：”+jedis.lrange(“collections”, 0, -1));
System.out.println(“collections列表出棧（左端）：”+jedis.lpop(“collections”));
System.out.println(“collections的內(nèi)容：”+jedis.lrange(“collections”, 0, -1));
System.out.println(“collections添加元素，從列表右端，與lpush相對(duì)應(yīng)：”+jedis.rpush(“collections”, “EnumMap”));
System.out.println(“collections的內(nèi)容：”+jedis.lrange(“collections”, 0, -1));
System.out.println(“collections列表出棧（右端）：”+jedis.rpop(“collections”));
System.out.println(“collections的內(nèi)容：”+jedis.lrange(“collections”, 0, -1));
System.out.println(“修改collections指定下標(biāo)1的內(nèi)容：”+jedis.lset(“collections”, 1, “LinkedArrayList”));
System.out.println(“collections的內(nèi)容：”+jedis.lrange(“collections”, 0, -1));
System.out.println("=");
System.out.println(“collections的長(zhǎng)度：”+jedis.llen(“collections”));
System.out.println(“獲取collections下標(biāo)為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));
}
輸出結(jié)果：

===========添加一個(gè)list=========== collections的內(nèi)容：[TreeMap, TreeSet, HashSet, LinkedHashMap, WeakHashMap, HashMap, Stack, Vector, ArrayList] collections區(qū)間0-3的元素：[TreeMap, TreeSet, HashSet, LinkedHashMap] =============================== 刪除指定元素個(gè)數(shù)：1 collections的內(nèi)容：[TreeMap, TreeSet, HashSet, LinkedHashMap, WeakHashMap, Stack, Vector, ArrayList] 刪除下表0-3區(qū)間之外的元素：OK collections的內(nèi)容：[TreeMap, TreeSet, HashSet, LinkedHashMap] collections列表出棧（左端）：TreeMap collections的內(nèi)容：[TreeSet, HashSet, LinkedHashMap] collections添加元素，從列表右端，與lpush相對(duì)應(yīng)：4 collections的內(nèi)容：[TreeSet, HashSet, LinkedHashMap, EnumMap] collections列表出棧（右端）：EnumMap collections的內(nèi)容：[TreeSet, HashSet, LinkedHashMap] 修改collections指定下標(biāo)1的內(nèi)容：OK collections的內(nèi)容：[TreeSet, LinkedArrayList, LinkedHashMap] =============================== collections的長(zhǎng)度：3 獲取collections下標(biāo)為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中還有阻塞式的列表彈出命令以及在列表之間移動(dòng)元素的命令：blpop, brpop, rpoplpush, brpoplpush等。

##集合（Set）

@Test public void testSet(){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的所有元素為："+jedis.smembers("eleSet"));System.out.println("刪除一個(gè)元素e0："+jedis.srem("eleSet", "e0"));System.out.println("eleSet的所有元素為："+jedis.smembers("eleSet"));System.out.println("刪除兩個(gè)元素e7和e6："+jedis.srem("eleSet", "e7","e6"));System.out.println("eleSet的所有元素為："+jedis.smembers("eleSet"));System.out.println("隨機(jī)的移除集合中的一個(gè)元素："+jedis.spop("eleSet"));System.out.println("隨機(jī)的移除集合中的一個(gè)元素："+jedis.spop("eleSet"));System.out.println("eleSet的所有元素為："+jedis.smembers("eleSet"));System.out.println("eleSet中包含元素的個(gè)數(shù)："+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("將eleSet1中刪除e1并存入eleSet3中："+jedis.smove("eleSet1", "eleSet3", "e1"));System.out.println("將eleSet1中刪除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("============集合運(yùn)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中沒有}

輸出結(jié)果：

============向集合中添加元素============ 8 1 0 eleSet的所有元素為：[e3, e4, e1, e2, e0, e8, e7, e6, e5] 刪除一個(gè)元素e0：1 eleSet的所有元素為：[e3, e4, e1, e2, e8, e7, e6, e5] 刪除兩個(gè)元素e7和e6：2 eleSet的所有元素為：[e3, e4, e1, e2, e8, e5] 隨機(jī)的移除集合中的一個(gè)元素：e5 隨機(jī)的移除集合中的一個(gè)元素：e2 eleSet的所有元素為：[e3, e4, e1, e8] eleSet中包含元素的個(gè)數(shù)：4 e3是否在eleSet中：true e1是否在eleSet中：true e1是否在eleSet中：false ================================= 8 6 將eleSet1中刪除e1并存入eleSet3中：1 將eleSet1中刪除e2并存入eleSet3中：1 eleSet1中的元素：[e3, e4, e0, e8, e7, e5] eleSet3中的元素：[e1, e2] ============集合運(yùn)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]

關(guān)于Set還有一些其他命令：srandmember, sdiffstore, sinterstore, sunionstore等。

##散列

@Test public void testHash(){jedis.flushDB();Map<String,String> map = new HashMap<>();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的所有鍵值對(duì)為："+jedis.hgetAll("hash"));//return Map<String,String>System.out.println("散列hash的所有鍵為："+jedis.hkeys("hash"));//return Set<String>System.out.println("散列hash的所有值為："+jedis.hvals("hash"));//return List<String>System.out.println("將key6保存的值加上一個(gè)整數(shù)，如果key6不存在則添加key6："+jedis.hincrBy("hash", "key6", 6));System.out.println("散列hash的所有鍵值對(duì)為："+jedis.hgetAll("hash"));System.out.println("將key6保存的值加上一個(gè)整數(shù)，如果key6不存在則添加key6："+jedis.hincrBy("hash", "key6", 3));System.out.println("散列hash的所有鍵值對(duì)為："+jedis.hgetAll("hash"));System.out.println("刪除一個(gè)或者多個(gè)鍵值對(duì)："+jedis.hdel("hash", "key2"));System.out.println("散列hash的所有鍵值對(duì)為："+jedis.hgetAll("hash"));System.out.println("散列hash中鍵值對(duì)的個(gè)數(shù)："+jedis.hlen("hash"));System.out.println("判斷hash中是否存在key2："+jedis.hexists("hash","key2"));System.out.println("判斷hash中是否存在key3："+jedis.hexists("hash","key3"));System.out.println("獲取hash中的值："+jedis.hmget("hash","key3"));System.out.println("獲取hash中的值："+jedis.hmget("hash","key3","key4"));}

輸出結(jié)果：

散列hash的所有鍵值對(duì)為：{key4=value4, key3=value3, key5=value5, key2=value2, key1=value1} 散列hash的所有鍵為：[key4, key3, key5, key2, key1] 散列hash的所有值為：[value4, value3, value1, value2, value5] 將key6保存的值加上一個(gè)整數(shù)，如果key6不存在則添加key6：6 散列hash的所有鍵值對(duì)為：{key4=value4, key3=value3, key6=6, key5=value5, key2=value2, key1=value1} 將key6保存的值加上一個(gè)整數(shù)，如果key6不存在則添加key6：9 散列hash的所有鍵值對(duì)為：{key4=value4, key3=value3, key6=9, key5=value5, key2=value2, key1=value1} 刪除一個(gè)或者多個(gè)鍵值對(duì)：1 散列hash的所有鍵值對(duì)為：{key4=value4, key3=value3, key6=9, key5=value5, key1=value1} 散列hash中鍵值對(duì)的個(gè)數(shù)：5 判斷hash中是否存在key2：false 判斷hash中是否存在key3：true 獲取hash中的值：[value3] 獲取hash中的值：[value3, value4]

##有序集合

@Test public void testSortedSet(){jedis.flushDB();Map<Double,String> map = new HashMap<>();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("刪除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中元素的個(gè)數(shù)："+jedis.zcard("zset"));System.out.println("zset中分值在1-4之間的元素的個(gè)數(shù)："+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));}

輸出結(jié)果：

1 4 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：1.2 zset中key2的排名：1 刪除zset中的元素key3：1 zset中的所有元素：[key5, key2, key1, key4] zset中元素的個(gè)數(shù)：4 zset中分值在1-4之間的元素的個(gè)數(shù)：2 key2的分值加上5：6.2 key3的分值加上4：4.0 zset中的所有元素：[key5, key1, key3, key4, key2]

有序集合還有諸如zinterstore, zunionstore, zremrangebyscore, zremrangebyrank, zrevrank, zrevrange, zrangebyscore等命令。

##排序sort

@Test public void testSort(){jedis.flushDB();jedis.lpush("collections", "ArrayList", "Vector", "Stack", "HashMap", "WeakHashMap", "LinkedHashMap");System.out.println("collections的內(nèi)容："+jedis.lrange("collections", 0, -1));SortingParams sortingParameters = new SortingParams();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 = new SortingParams();sortingParameters.get("user:*->name"); sortingParameters.get("user:*->add"); System.out.println(jedis.sort("userlist",sortingParameters));}

輸出結(jié)果：

collections的內(nèi)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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參考資料

java操作redis

java對(duì)redis的基本操作

《Redis In Action》Josiah L. Carlson

redis的簡(jiǎn)單使用

歡迎跳轉(zhuǎn)到本文的原文鏈接：https://honeypps.com/backend/how-to-use-jedis/

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