1、Jedis客户端

https://redis.io/clients

2、Jedis源码包与使用介绍

https://github.com/xetorthio/jedis

3、项目中使用

通过maven引入Jedis的依赖包

<dependency>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
<version>2.9.</version>
<type>jar</type>
<scope>compile</scope>
</dependency>

4、Jedis的使用

创建Jedis对象,set方法存储key-value值,get方法获取key对应的值。主要是用于单个redis。

Jedis jedis = new Jedis("192.168.56.180", );
jedis.set("Jedis", "Hello Work!");
System.out.println(jedis.get("Jedis"));
jedis.close();

这里是使用IDEA编辑器对Jedis类结构的一个关系图,从图中看出Jedis继承BinaryJedis,实现多个接口。

每一个接口都代表了一类Redis命令,例如JedisCommands中包含了SET GET等命令,MultiKeyCommands中包含了针对多个Key的MSET MGET等命令。

5、JedisCluster的使用

Jediscluster类图和jedis类图大致一样,不过jedisCluster有一些命令是不可用的。比如BinaryJedisCluster类被作废的命令。主要是用在集群中。

类图:

6、单个reids中API的测试

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; /**
* 单机环境Redis操作:一台Redis服务器
*/
public class Standalone {
private static Jedis jedis;
static {
jedis = new Jedis("192.168.56.180", );
jedis.auth(""); // 之前我在redis配置中配置了权限密码,这里需要设置
} /**
* 测试key - value 的数据
* @throws InterruptedException
*/
@Test
public void testKey() throws InterruptedException {
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','wukong'>的键值对:"+jedis.set("username", "wukong"));
System.out.println("是否存在:"+jedis.exists("name"));
System.out.println("新增<'password','password'>的键值对:"+jedis.set("password", "password"));
Set<String> keys = jedis.keys("*");
System.out.println("系统中所有的键如下:"+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", ));
TimeUnit.SECONDS.sleep();
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"));
} /***
* 字符串操作
* memcached和redis同样有append的操作,但是memcached有prepend的操作,redis中并没有。
* @throws InterruptedException
*/
@Test
public void testString() throws InterruptedException {
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(new String[]{"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", , "value3"));
System.out.println(jedis.get("key3"));
TimeUnit.SECONDS.sleep();
System.out.println(jedis.get("key3")); System.out.println("===========获取原值,更新为新值==========");//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("获得key2的值的字串:"+jedis.getrange("key2", , ));
} /***
* 整数和浮点数
*/
@Test
public void testNumber() {
jedis.flushDB();
jedis.set("key1", "");
jedis.set("key2", "");
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", ));
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", ));
System.out.println("获取key2的值:"+jedis.get("key2"));
} /***
* 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", , -));//-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",,));
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", , "HashMap"));
System.out.println("collections的内容:"+jedis.lrange("collections", , -));
System.out.println("删除下表0-3区间之外的元素:"+jedis.ltrim("collections", , ));
System.out.println("collections的内容:"+jedis.lrange("collections", , -));
System.out.println("collections列表出栈(左端):"+jedis.lpop("collections"));
System.out.println("collections的内容:"+jedis.lrange("collections", , -));
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", , -));
System.out.println("collections列表出栈(右端):"+jedis.rpop("collections"));
System.out.println("collections的内容:"+jedis.lrange("collections", , -));
System.out.println("修改collections指定下标1的内容:"+jedis.lset("collections", , "LinkedArrayList"));
System.out.println("collections的内容:"+jedis.lrange("collections", , -));
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", ));
System.out.println("===============================");
jedis.lpush("sortedList", "","","","","","");
System.out.println("sortedList排序前:"+jedis.lrange("sortedList", , -));
System.out.println(jedis.sort("sortedList"));
System.out.println("sortedList排序后:"+jedis.lrange("sortedList", , -));
} /***
* set集合
*/
@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
} /***
* 散列
*/
@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("散列hash的所有键值对为:"+jedis.hgetAll("hash"));//return Map<String,String>
System.out.println("散列hash的所有键为:"+jedis.hkeys("hash"));//return Set<String>
System.out.println("散列hash的所有值为:"+jedis.hvals("hash"));//return List<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", ));
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", ));
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"));
} /**
* 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", ,"key1"));
System.out.println(jedis.zadd("zset",map));
System.out.println("zset中的所有元素:"+jedis.zrange("zset", , -));
System.out.println("zset中的所有元素:"+jedis.zrangeWithScores("zset", , -));
System.out.println("zset中的所有元素:"+jedis.zrangeByScore("zset", ,));
System.out.println("zset中的所有元素:"+jedis.zrangeByScoreWithScores("zset", ,));
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", , -));
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", , ));
System.out.println("key2的分值加上5:"+jedis.zincrby("zset", , "key2"));
System.out.println("key3的分值加上4:"+jedis.zincrby("zset", , "key3"));
System.out.println("zset中的所有元素:"+jedis.zrange("zset", , -));
} /**
* 排序
*/
@Test
public void testSort()
{
jedis.flushDB();
jedis.lpush("collections", "ArrayList", "Vector", "Stack", "HashMap", "WeakHashMap", "LinkedHashMap");
System.out.println("collections的内容:"+jedis.lrange("collections", , -));
SortingParams sortingParameters = new SortingParams();
System.out.println(jedis.sort("collections",sortingParameters.alpha()));
System.out.println("===============================");
jedis.lpush("sortedList", "","","","","","");
System.out.println("sortedList排序前:"+jedis.lrange("sortedList", , -));
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", "");
jedis.lpush("userlist", "");
jedis.lpush("userlist", "");
jedis.lpush("userlist", "");
jedis.hset("user:66", "name", "");
jedis.hset("user:55", "name", "");
jedis.hset("user:33", "name", "");
jedis.hset("user:22", "name", "");
jedis.hset("user:11", "name", "");
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、集群reids中API的测试

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; /**
* 集群环境下Jedis操作
*/
public class Cluster {
private static JedisCluster jedis;
static {
// 添加集群的服务节点Set集合
Set<HostAndPort> hostAndPortsSet = new HashSet<HostAndPort>();
// 添加节点
hostAndPortsSet.add(new HostAndPort("192.168.56.180", ));
hostAndPortsSet.add(new HostAndPort("192.168.56.180", ));
hostAndPortsSet.add(new HostAndPort("192.168.56.181", ));
hostAndPortsSet.add(new HostAndPort("192.168.56.181", ));
hostAndPortsSet.add(new HostAndPort("192.168.56.182", ));
hostAndPortsSet.add(new HostAndPort("192.168.56.182", )); // Jedis连接池配置
JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
// 最大空闲连接数, 默认8个
jedisPoolConfig.setMaxIdle();
// 最大连接数, 默认8个
jedisPoolConfig.setMaxTotal();
//最小空闲连接数, 默认0
jedisPoolConfig.setMinIdle();
// 获取连接时的最大等待毫秒数(如果设置为阻塞时BlockWhenExhausted),如果超时就抛异常, 小于零:阻塞不确定的时间, 默认-1
jedisPoolConfig.setMaxWaitMillis(); // 设置2秒
//对拿到的connection进行validateObject校验
jedisPoolConfig.setTestOnBorrow(true);
jedis = new JedisCluster(hostAndPortsSet, jedisPoolConfig);
} /**
* 测试key:value数据
* 集群中flushDB、keys废弃
*/
@Test
public void testKey() throws InterruptedException {
//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','wukong'>的键值对:"+jedis.set("username", "xiaohai"));
System.out.println("是否存在:"+jedis.exists("username"));
System.out.println("新增<'password','password'>的键值对:"+jedis.set("password", ""));
//Set<String> keys = jedis.keys("*");
// System.out.println("系统中所有的键如下:"+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10s:"+jedis.expire("username", ));
TimeUnit.SECONDS.sleep(); // 线程睡眠2秒System.out.println("查看键username的剩余生存时间:"+jedis.ttl("username"));
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"));
} /***
* 字符串操作
* memcached和redis同样有append的操作,但是memcached有prepend的操作,redis中并没有。
* 集群中flushDB、keys、del(多个值)、mset(多个值)废弃
* @throws InterruptedException
*/
@Test
public void testString() throws InterruptedException {
//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"));
//命令的时候才会去连接连接,集群中连接是对一个节点连接,不能判断多个key经过crc16算法所对应的槽在一个节点上,不支持多key获取、删除
//System.out.println("增加多个键值对:"+jedis.mset("key01","value01","key02","value02"));
//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(new String[]{"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", , "value3"));
System.out.println(jedis.get("key3"));
TimeUnit.SECONDS.sleep();
System.out.println(jedis.get("key3")); System.out.println("===========获取原值,更新为新值==========");//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("获得key2的值的字串:"+jedis.getrange("key2", , )); // 相当截取字符串的第二个位置-第四个位置的字符串
} /***
* 整数和浮点数
*/
@Test
public void testNumber() {
jedis.set("key1", "");
jedis.set("key2", "");
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", ));
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", ));
System.out.println("获取key2的值:"+jedis.get("key2"));
System.out.println("key3的值:"+jedis.get("key3"));
// 这里会报错,因为key3不是整数不能做计算:redis.clients.jedis.exceptions.JedisDataException: ERR value is not an integer or out of range
// System.out.println("key2的值减1:"+jedis.decr("key3"));
} /***
* 列表
*/
@Test
public void testList() {
System.out.println("===========添加一个list===========");
jedis.lpush("collections", "ArrayList", "Vector", "Stack", "HashMap", "WeakHashMap", "LinkedHashMap");
jedis.lpush("collections", "HashSet"); // 叠加
jedis.lpush("collections", "TreeSet"); // 叠加
jedis.lpush("collections", "TreeMap"); // 叠加
System.out.println("collections的内容:"+jedis.lrange("collections", , -));//-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",,)); // 前面4个值
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", , "HashMap"));
System.out.println("collections的内容:"+jedis.lrange("collections", , -));
System.out.println("删除下表0-3区间之外的元素:"+jedis.ltrim("collections", , ));
System.out.println("collections的内容:"+jedis.lrange("collections", , -));
System.out.println("collections列表出栈(左端):"+jedis.lpop("collections"));
System.out.println("collections的内容:"+jedis.lrange("collections", , -));
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", , -));
System.out.println("collections列表出栈(右端):"+jedis.rpop("collections"));
System.out.println("collections的内容:"+jedis.lrange("collections", , -));
System.out.println("修改collections指定下标1的内容:"+jedis.lset("collections", , "LinkedArrayList"));
System.out.println("collections的内容:"+jedis.lrange("collections", , -));
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", ));
System.out.println("===============================");
jedis.lpush("sortedList", "","","","","","");
System.out.println("sortedList排序前:"+jedis.lrange("sortedList", , -));
System.out.println(jedis.sort("sortedList"));
System.out.println("sortedList排序后:"+jedis.lrange("sortedList", , -));
} /***
* set集合
*/
@Test
public void testSet() {
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")); // 返回0,集合中已经存在
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("e5是否在eleSet中:"+jedis.sismember("eleSet", "e5")); // 集群下并存会报错:redis.clients.jedis.exceptions.JedisClusterException: No way to dispatch this command to Redis Cluster because keys have different slots.
// Redis集群,从key1集合与key2集合并存、交集、差集,两个键经过crc16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("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"));*/
jedis.del("eleSet");
jedis.del("eleSet1");
jedis.del("eleSet2");
jedis.del("eleSet3");
} /***
* 散列
*/
@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("散列hash的所有键值对为:"+jedis.hgetAll("hash"));//return Map<String,String>
System.out.println("散列hash的所有键为:"+jedis.hkeys("hash"));//return Set<String>
System.out.println("散列hash的所有值为:"+jedis.hvals("hash"));//return List<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", ));
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", ));
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"));
} /**
* 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);
// 将一个或多个 member 元素及其 score 值加入到有序集 key 当中,如果某个 member 已经是有序集的成员,那么更新这个 member 的 score 值
// score 值可以是整数值或双精度浮点数
System.out.println(jedis.zadd("zset", ,"key1"));
System.out.println(jedis.zadd("zset",map));
System.out.println("zset中的所有元素:"+jedis.zrange("zset", , -));
System.out.println("zset中的所有元素:"+jedis.zrangeWithScores("zset", , -));
System.out.println("zset中的所有元素:"+jedis.zrangeByScore("zset", ,));
System.out.println("zset中的所有元素:"+jedis.zrangeByScoreWithScores("zset", ,));
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", , -));
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", , ));
System.out.println("key2的分值加上5:"+jedis.zincrby("zset", , "key2"));
System.out.println("key3的分值加上4:"+jedis.zincrby("zset", , "key3"));
System.out.println("zset中的所有元素:"+jedis.zrange("zset", , -));
} /**
* 排序
*/
@Test
public void testSort() {
jedis.lpush("collections", "ArrayList", "Vector", "Stack", "HashMap", "WeakHashMap", "LinkedHashMap");
System.out.println("collections的内容:"+jedis.lrange("collections", , -));
SortingParams sortingParameters = new SortingParams();
// 当数据集中保存的是字符串值时,你可以用 ALPHA,默认是升序
System.out.println("alpha排序方式:" + jedis.sort("collections",sortingParameters.alpha()));
System.out.println("===============================");
jedis.lpush("sortedList", "","","","","","");
System.out.println("sortedList排序前:"+jedis.lrange("sortedList", , -));
System.out.println("升序:"+jedis.sort("sortedList", sortingParameters.asc()));
System.out.println("降序:"+jedis.sort("sortedList", sortingParameters.desc()));
System.out.println("===============================");
// 集群下不支持分割表排序
/*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();
// 符号 "->" 用于分割哈希表的键名(key name)和索引域(hash field),格式为 "key->field"
sortingParameters.get("user:*->name");
sortingParameters.get("user:*->add");
System.out.println(jedis.sort("userlist",sortingParameters));*/
}
}

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