Redis随笔（五）Jedis、jedisCluster的使用

最新推荐文章于 2025-04-14 18:53:19 发布

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最新推荐文章于 2025-04-14 18:53:19 发布

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分类专栏： redis

本文链接：https://blog.youkuaiyun.com/djrm11/article/details/95942956

https://blog.youkuaiyun.com/djrm11/article/details/83379788

参：https://www.cnblogs.com/c-xiaohai/p/8376364.html

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

复制代码


 
 
 
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
    
     
     
     <dependency>
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
        
     
     
     <groupId>redis.clients
     
     
     </groupId>
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
        
     
     
     <artifactId>jedis
     
     
     </artifactId>
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
        
     
     
     <version>2.9.0
     
     
     </version>
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
        
     
     
     <type>jar
     
     
     </type>
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
        
     
     
     <scope>compile
     
     
     </scope>
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
    
     
     
     </dependency>

复制代码

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", 6379);
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
    
     
     
     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", 6379);
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
    
     
     
             jedis.auth("123456"); // 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", 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"));
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
    
     
     
         }
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
     
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
    
     
     
         /***
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
    
     
     
          * 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", 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==========");//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", 2, 4));
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
    
     
     
         }
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
     
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
    
     
     
         /***
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
    
     
     
          * 整数和浮点数
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
    
     
     
          */
    
    
    
   
   
   
  
  
   
   
   
    
    
    
   
   
   
   
   
   
    
    
    
     
     
         @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("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