使用Java操作redis

redis的安装请参照：https://blog.csdn.net/qq_38669394/article/details/80278000

1. 当我们在本地虚拟机搭建好 redis之后，新建java项目，下面是我的工程截图

2.在lib中导入jedis jar包

3，导入jar包之后测试是否连得上redis数据库

package com.handofgod;

import redis.clients.jedis.Jedis;

public class TestPing {
   public static void main(String[] args)
   {
       Jedis jedis = new Jedis("127.0.0.1",6379);
       System.out.println(jedis.ping());
   }

}

代码在以上地址，请注意自己的redis 的IP地址

2.测试redis的存取操作

package com.handofgod;

import java.util.Set;

import redis.clients.jedis.Jedis;

public class TestAPI {
   public static void main(String[] args)
   {
       Jedis jedis = new Jedis("127.0.0.1",6379);

       jedis.set("k1","v1");
       jedis.set("k2","v2");
       jedis.set("k3","v3");


       System.out.println(jedis.get("k3"));

       Set<String> sets = jedis.keys("*");
       System.out.println(sets.size());


   }
}

3.测试redis的主从复制

package com.handofgod;

import redis.clients.jedis.Jedis;

public class TestMS {
   public static void main(String[] args) {
       Jedis jedis_M = new Jedis("127.0.0.1",6379);
       Jedis jedis_S = new Jedis("127.0.0.1",6380);

       jedis_S.slaveof("127.0.0.1",6379);

       jedis_M.set("class","1122V2");

       String result = jedis_S.get("class");
       System.out.println(result);
   }
}

4.rdies 工具类

package com.handofgod;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.JedisPoolConfig;

public class JedisPoolUtil
{
   private static volatile JedisPool jedisPool = null;

   private JedisPoolUtil(){}

   public static JedisPool getJedisPoolInstance()
   {
       if(null == jedisPool)
       {
           synchronized (JedisPoolUtil.class)
           {
               if(null == jedisPool)
               {
                   JedisPoolConfig poolConfig = new JedisPoolConfig();
                   poolConfig.setMaxActive(1000);
                   poolConfig.setMaxIdle(32);
                   poolConfig.setMaxWait(100*1000);
                   poolConfig.setTestOnBorrow(true);

                   jedisPool = new JedisPool(poolConfig,"127.0.0.1",6379);
               }
           }
       }
       return jedisPool;
   }


   public static void release(JedisPool jedisPool,Jedis jedis)
   {
       if(null != jedis)
       {
           jedisPool.returnResourceObject(jedis);
       }
   }

}

更多实践请参照redis官网。

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