Redis隨筆（五）Jedis、jedisCluster的使用
阿新 • • 發佈：2018-12-17
1、Jedis客戶端
https://redis.io/clients
2、Jedis原始碼包與使用介紹
3、專案中使用
通過maven引入Jedis的依賴包
<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.0</version>
<type>jar</type>
<scope>compile</scope>
</dependency>
4、Jedis的使用
建立Jedis物件，set方法儲存key-value值，get方法獲取key對應的值。主要是用於單個redis。
Jedis jedis = new Jedis("192.168.56.180", 6379);
jedis.set("Jedis", "Hello Work!");
System.out.println(jedis.get("Jedis"));
jedis.close();
這裡是使用IDEA編輯器對Jedis類結構的一個關係圖，從圖中看出Jedis繼承BinaryJedis，實現多個介面。
每一個介面都代表了一類Redis命令，例如JedisCommands中包含了SET GET等命令，MultiKeyCommands中包含了針對多個Key的MSET MGET等命令。
5、JedisCluster的使用
Jediscluster類圖和jedis類圖大致一樣，不過jedisCluster有一些命令是不可用的。比如BinaryJedisCluster類被作廢的命令。主要是用在叢集中。
類圖：
6、單個reids中API的測試
package com.redis;
import org.junit.Test;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.SortingParams;
import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.concurrent.TimeUnit;
/**
* 單機環境Redis操作：一臺Redis伺服器
*/
public class Standalone {
private static Jedis jedis;
static {
jedis = new Jedis("192.168.56.180", 6379);
jedis.auth("123456"); // 之前我在redis配置中配置了許可權密碼，這裡需要設定
}
/**
* 測試key - value 的資料
* @throws InterruptedException
*/
@Test
public void testKey() throws InterruptedException {
System.out.println("清空資料："+jedis.flushDB());
System.out.println("判斷某個鍵是否存在："+jedis.exists("username"));
System.out.println("新增<'username','wukong'>的鍵值對："+jedis.set("username", "wukong"));
System.out.println("是否存在:"+jedis.exists("name"));
System.out.println("新增<'password','password'>的鍵值對："+jedis.set("password", "password"));
Set<String> keys = jedis.keys("*");
System.out.println("系統中所有的鍵如下："+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("設定鍵username的過期時間為5s:"+jedis.expire("username", 5));
TimeUnit.SECONDS.sleep(2);
System.out.println("檢視鍵username的剩餘生存時間："+jedis.ttl("username"));
System.out.println("移除鍵username的生存時間："+jedis.persist("username"));
System.out.println("檢視鍵username的剩餘生存時間："+jedis.ttl("username"));
System.out.println("檢視鍵username所儲存的值的型別："+jedis.type("username"));
}
/***
* 字串操作
* memcached和redis同樣有append的操作，但是memcached有prepend的操作，redis中並沒有。
* @throws InterruptedException
*/
@Test
public void testString() throws InterruptedException {
jedis.flushDB();
System.out.println("===========增加資料===========");
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後面加入值："+jedis.append("key3", "End"));
System.out.println("key3的值："+jedis.get("key3"));
System.out.println("增加多個鍵值對："+jedis.mset("key01","value01","key02","value02","key03","value03"));
System.out.println("獲取多個鍵值對："+jedis.mget("key01","key02","key03"));
System.out.println("獲取多個鍵值對："+jedis.mget("key01","key02","key03","key04"));
System.out.println("刪除多個鍵值對："+jedis.del(new String[]{"key01","key02"}));
System.out.println("獲取多個鍵值對："+jedis.mget("key01","key02","key03"));
jedis.flushDB();
System.out.println("===========新增鍵值對防止覆蓋原先值==============");
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("===========新增鍵值對並設定有效時間=============");
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));
}
/***
* 整數和浮點數
*/
@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5："+jedis.decrBy("key2", 5));
System.out.println("獲取key2的值："+jedis.get("key2"));
}
/***
* 列表
*/
@Test
public void testList() {
jedis.flushDB();
System.out.println("===========新增一個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的內容："+jedis.lrange("collections", 0, -1));//-1代表倒數第一個元素，-2代表倒數第二個元素
System.out.println("collections區間0-3的元素："+jedis.lrange("collections",0,3));
System.out.println("===============================");
// 刪除列表指定的值 ，第二個引數為刪除的個數（有重複時），後add進去的值先被刪，類似於出棧
System.out.println("刪除指定元素個數："+jedis.lrem("collections", 2, "HashMap"));
System.out.println("collections的內容："+jedis.lrange("collections", 0, -1));
System.out.println("刪除下表0-3區間之外的元素："+jedis.ltrim("collections", 0, 3));
System.out.println("collections的內容："+jedis.lrange("collections", 0, -1));
System.out.println("collections列表出棧（左端）："+jedis.lpop("collections"));
System.out.println("collections的內容："+jedis.lrange("collections", 0, -1));
System.out.println("collections新增元素，從列表右端，與lpush相對應："+jedis.rpush("collections", "EnumMap"));
System.out.println("collections的內容："+jedis.lrange("collections", 0, -1));
System.out.println("collections列表出棧（右端）："+jedis.rpop("collections"));
System.out.println("collections的內容："+jedis.lrange("collections", 0, -1));
System.out.println("修改collections指定下標1的內容："+jedis.lset("collections", 1, "LinkedArrayList"));
System.out.println("collections的內容："+jedis.lrange("collections", 0, -1));
System.out.println("===============================");
System.out.println("collections的長度："+jedis.llen("collections"));
System.out.println("獲取collections下標為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排序後："+jedis.lrange("sortedList", 0, -1));
}
/***
* set集合
*/
@Test
public void testSet() {
jedis.flushDB();
System.out.println("============向集合中新增元素============");
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("隨機的移除集合中的一個元素："+jedis.spop("eleSet"));
System.out.println("隨機的移除集合中的一個元素："+jedis.spop("eleSet"));
System.out.println("eleSet的所有元素為："+jedis.smembers("eleSet"));
System.out.println("eleSet中包含元素的個數："+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並存入eleSet3中："+jedis.smove("eleSet1", "eleSet3", "e1"));
System.out.println("將eleSet1中刪除e2並存入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的並集:"+jedis.sunion("eleSet1","eleSet2"));
System.out.println("eleSet1和eleSet2的差集:"+jedis.sdiff("eleSet1","eleSet2"));//eleSet1中有，eleSet2中沒有
}
/***
* 雜湊
*/
@Test
public void testHash() {
jedis.flushDB();
Map<String,String> map = new HashMap<String,String>();
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("雜湊hash的所有鍵值對為："+jedis.hgetAll("hash"));//return Map<String,String>
System.out.println("雜湊hash的所有鍵為："+jedis.hkeys("hash"));//return Set<String>
System.out.println("雜湊hash的所有值為："+jedis.hvals("hash"));//return List<String>
System.out.println("將key6儲存的值加上一個整數，如果key6不存在則新增key6："+jedis.hincrBy("hash", "key6", 6));
System.out.println("雜湊hash的所有鍵值對為："+jedis.hgetAll("hash"));
System.out.println("將key6儲存的值加上一個整數，如果key6不存在則新增key6："+jedis.hincrBy("hash", "key6", 3));
System.out.println("雜湊hash的所有鍵值對為："+jedis.hgetAll("hash"));
System.out.println("刪除一個或者多個鍵值對："+jedis.hdel("hash", "key2"));
System.out.println("雜湊hash的所有鍵值對為："+jedis.hgetAll("hash"));
System.out.println("雜湊hash中鍵值對的個數："+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"));
}
/**
* 有序集合
*/
@Test
public void testSortedSet() {
jedis.flushDB();
Map<String,Double> map = new HashMap<String,Double>();
map.put("key2",1.2);
map.put("key3",4.0);
map.put("key4",5.0);
map.put("key5",0.2);
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中元素的個數："+jedis.zcard("zset"));
System.out.println("zset中分值在1-4之間的元素的個數："+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));
}
/**
* 排序
*/
@Test
public void testSort()
{
jedis.flushDB();
jedis.lpush("collections", "ArrayList", "Vector", "Stack", "HashMap", "WeakHashMap", "LinkedHashMap");
System.out.println("collections的內容："+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));
}
}
7、叢集reids中API的測試
package com.redis;
import org.junit.Test;
import redis.clients.jedis.HostAndPort;
import redis.clients.jedis.JedisCluster;
import redis.clients.jedis.JedisPoolConfig;
import redis.clients.jedis.SortingParams;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;
/**
* 叢集環境下Jedis操作
*/
public class Cluster {
private static JedisCluster jedis;
static {
// 新增叢集的服務節點Set集合
Set<HostAndPort> hostAndPortsSet = new HashSet<HostAndPort>();
// 新增節點
hostAndPortsSet.add(new HostAndPort("192.168.56.180", 7777));
hostAndPortsSet.add(new HostAndPort("192.168.56.180", 8888));
hostAndPortsSet.add(new HostAndPort("192.168.56.181", 7777));
hostAndPortsSet.add(new HostAndPort("192.168.56.181", 8888));
hostAndPortsSet.add(new HostAndPort("192.168.56.182", 7777));
hostAndPortsSet.add(new HostAndPort("192.168.56.182", 8888));
// Jedis連線池配置
JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
// 最大空閒連線數, 預設8個
jedisPoolConfig.setMaxIdle(100);
// 最大連線數, 預設8個
jedisPoolConfig.setMaxTotal(500);
//最小空閒連線數, 預設0
jedisPoolConfig.setMinIdle(0);
// 獲取連線時的最大等待毫秒數(如果設定為阻塞時BlockWhenExhausted),如果超時就拋異常, 小於零:阻塞不確定的時間, 預設-1
jedisPoolConfig.setMaxWaitMillis(2000); // 設定2秒
//對拿到的connection進行validateObject校驗
jedisPoolConfig.setTestOnBorrow(true);
jedis = new JedisCluster(hostAndPortsSet, jedisPoolConfig);
}
/**
* 測試key:value資料
* 叢集中flushDB、keys廢棄
*/
@Test
public void testKey() throws InterruptedException {
//System.out.println("清空資料："+jedis.flushDB());
System.out.println("判斷某個鍵是否存在："+jedis.exists("username"));
System.out.println("新增<'username','wukong'>的鍵值對："+jedis.set("username", "xiaohai"));
System.out.println("是否存在:"+jedis.exists("username"));
System.out.println("新增<'password','password'>的鍵值對："+jedis.set("password", "123456"));
//Set<String> keys = jedis.keys("*");
// System.out.println("系統中所有的鍵如下："+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("設定鍵username的過期時間為10s:"+jedis.expire("username", 10));
TimeUnit.SECONDS.sleep(2); // 執行緒睡眠2秒System.out.println("檢視鍵username的剩餘生存時間："+jedis.ttl("username"));
System.out.println("檢視鍵username的剩餘生存時間："+jedis.ttl("username"));
System.out.println("移除鍵username的生存時間："+jedis.persist("username"));
System.out.println("檢視鍵username的剩餘生存時間："+jedis.ttl("username"));
System.out.println("檢視鍵username所儲存的值的型別："+jedis.type("username"));
}
/***
* 字串操作
* memcached和redis同樣有append的操作，但是memcached有prepend的操作，redis中並沒有。
* 叢集中flushDB、keys、del(多個值)、mset(多個值)廢棄
* @throws InterruptedException
*/
@Test
public void testString() throws InterruptedException {
//jedis.flushDB();
System.out.println("===========增加資料===========");
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後面加入值："+jedis.append("key3", "End"));
System.out.println("key3的值："+jedis.get("key3"));
//命令的時候才會去連線連線，叢集中連線是對一個節點連線，不能判斷多個key經過crc16演算法所對應的槽在一個節點上，不支援多key獲取、刪除
//System.out.println("增加多個鍵值對："+jedis.mset("key01","value01","key02","value02"));
//System.out.println("獲取多個鍵值對："+jedis.mget("key01","key02","key03"));
//System.out.println("獲取多個鍵值對："+jedis.mget("key01","key02","key03","key04"));
//System.out.println("刪除多個鍵值對："+jedis.del(new String[]{"key01","key02"}));
//System.out.println("獲取多個鍵值對："+jedis.mget("key01","key02","key03"));
//jedis.flushDB();
System.out.println("===========新增鍵值對防止覆蓋原先值==============");
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("===========新增鍵值對並設定有效時間=============");
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)); // 相當擷取字串的第二個位置-第四個位置的字串
}
/***
* 整數和浮點數
*/
@Test
public void testNumber() {
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5："+jedis.decrBy("key2", 5));
System.out.println("獲取key2的值："+jedis.get("key2"));
System.out.println("key3的值："+jedis.get("key3"));
// 這裡會報錯，因為key3不是整數不能做計算:redis.clients.jedis.exceptions.JedisDataException: ERR value is not an integer or out of range
// System.out.println("key2的值減1："+jedis.decr("key3"));
}
/***
* 列表
*/
@Test
public void testList() {
System.out.println("===========新增一個list===========");
jedis.lpush("collections", "ArrayList", "Vector", "Stack", "HashMap", "WeakHashMap", "LinkedHashMap");
jedis.lpush("collections", "HashSet"); // 疊加
jedis.lpush("collections", "TreeSet"); // 疊加
jedis.lpush("collections", "TreeMap"); // 疊加
System.out.println("collections的內容："+jedis.lrange("collections", 0, -1));//-1代表倒數第一個元素，-2代表倒數第二個元素
System.out.println("collections區間0-3的元素："+jedis.lrange("collections",0,3)); // 前面4個值
System.out.println("===============================");
// 刪除列表指定的值 ，第二個引數為刪除的個數（有重複時），後add進去的值先被刪，類似於出棧
System.out.println("刪除指定元素個數："+jedis.lrem("collections", 2, "HashMap"));
System.out.println("collections的內容："+jedis.lrange("collections", 0, -1));
System.out.println("刪除下表0-3區間之外的元素："+jedis.ltrim("collections", 0, 3));
System.out.println("collections的內容："+jedis.lrange("collections", 0, -1));
System.out.println("collections列表出棧（左端）："+jedis.lpop("collections"));
System.out.println("collections的內容："+jedis.lrange("collections", 0, -1));
System.out.println("collections新增元素，從列表右端，與lpush相對應："+jedis.rpush("collections", "EnumMap"));
System.out.println("collections的內容："+jedis.lrange("collections", 0, -1));
System.out.println("collections列表出棧（右端）："+jedis.rpop("collections"));
System.out.println("collections的內容："+jedis.lrange("collections", 0, -1));
System.out.println("修改collections指定下標1的內容："+jedis.lset("collections", 1, "LinkedArrayList"));
System.out.println("collections的內容："+jedis.lrange("collections", 0, -1));
System.out.println("===============================");
System.out.println("collections的長度："+jedis.llen("collections"));
System.out.println("獲取collections下標為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排序後："+jedis.lrange("sortedList", 0, -1));
}
/***
* set集合
*/
@Test
public void testSet() {
System.out.println("============向集合中新增元素============");
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")); // 返回0，集合中已經存在
System.out.println("eleSet的所有元素為："+jedis.smembers("eleSet"));
System.out.println("刪除一個元素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("隨機的移除集合中的一個元素："+jedis.spop("eleSet"));
System.out.println("隨機的移除集合中的一個元素："+jedis.spop("eleSet"));
System.out.println("eleSet的所有元素為："+jedis.smembers("eleSet"));
System.out.println("eleSet中包含元素的個數："+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("e5是否在eleSet中："+jedis.sismember("eleSet", "e5"));
// 叢集下並存會報錯：redis.clients.jedis.exceptions.JedisClusterException: No way to dispatch this command to Redis Cluster because keys have different slots.
// Redis叢集，從key1集合與key2集合並存、交集、差集，兩個鍵經過crc16演算法可能有不同的槽。
/*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並存入eleSet3中："+jedis.smove("eleSet1", "eleSet3", "e1"));
System.out.println("將eleSet1中刪除e2並存入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的並集:"+jedis.sunion("eleSet1","eleSet2"));
System.out.println("eleSet1和eleSet2的差集:"+jedis.sdiff("eleSet1","eleSet2"));*/
jedis.del("eleSet");
jedis.del("eleSet1");
jedis.del("eleSet2");
jedis.del("eleSet3");
}
/***
* 雜湊
*/
@Test
public void testHash() {
Map<String,String> map = new HashMap<String,String>();
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("雜湊hash的所有鍵值對為："+jedis.hgetAll("hash"));//return Map<String,String>
System.out.println("雜湊hash的所有鍵為："+jedis.hkeys("hash"));//return Set<String>
System.out.println("雜湊hash的所有值為："+jedis.hvals("hash"));//return List<String>
System.out.println("將key6儲存的值加上一個整數，如果key6不存在則新增key6："+jedis.hincrBy("hash", "key6", 6));
System.out.println("雜湊hash的所有鍵值對為："+jedis.hgetAll("hash"));
System.out.println("將key6儲存的值加上一個整數，如果key6不存在則新增key6："+jedis.hincrBy("hash", "key6", 3));
System.out.println("雜湊hash的所有鍵值對為："+jedis.hgetAll("hash"));
System.out.println("刪除一個或者多個鍵值對："+jedis.hdel("hash", "key2"));
System.out.println("雜湊hash的所有鍵值對為："+jedis.hgetAll("hash"));
System.out.println("雜湊hash中鍵值對的個數："+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"));
}
/**
* 有序集合
*/
@Test
public void testSortedSet() {
Map<String,Double> map = new HashMap<String,Double>();
map.put("key2",1.2);
map.put("key3",4.0);
map.put("key4",5.0);
map.put("key5",0.2);
// 將一個或多個 member 元素及其 score 值加入到有序集 key 當中，如果某個 member 已經是有序集的成員，那麼更新這個 member 的 score 值
// score 值可以是整數值或雙精度浮點數
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中元素的個數："+jedis.zcard("zset"));
System.out.println("zset中分值在1-4之間的元素的個數："+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));
}
/**
* 排序
*/
@Test
public void testSort() {
jedis.lpush("collections", "ArrayList", "Vector", "Stack", "HashMap", "WeakHashMap", "LinkedHashMap");
System.out.println("collections的內容："+jedis.lrange("collections", 0, -1));
SortingParams sortingParameters = new SortingParams();
// 當資料集中儲存的是字串值時，你可以用 ALPHA,預設是升序
System.out.println("alpha排序方式：" + 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("降序："+jedis.sort("sortedList", sortingParameters.desc()));
System.out.println("===============================");
// 叢集下不支援分割表排序
/*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();
// 符號 "->" 用於分割雜湊表的鍵名(key name)和索引域(hash field)，格式為 "key->field"
sortingParameters.get("user:*->name");
sortingParameters.get("user:*->add");
System.out.println(jedis.sort("userlist",sortingParameters));*/
}
}
分類: Redis
標籤: redis