Redis学习之路（四）Redis-cluster java api操作

import redis.clients.jedis.HostAndPort;
import redis.clients.jedis.JedisCluster;

import java.util.HashSet;
import java.util.List;
import java.util.Set;

/**
 * @Author: xiaolaotou
 * @Date: 2019/4/26
 */
public class RedisTest {
    //集群操作
     private static JedisCluster jedisCluster = null;

  static  {
        // redis节点信息   这里最好写入配置文件
        Set<HostAndPort> nodes = new HashSet<HostAndPort>();
        HostAndPort hap0 = new HostAndPort("192.168.200.100", 7000);
        HostAndPort hap1 = new HostAndPort("192.168.200.100", 7001);
        HostAndPort hap2 = new HostAndPort("192.168.200.100", 7002);
        HostAndPort hap3 = new HostAndPort("192.168.200.101", 7003);
        HostAndPort hap4 = new HostAndPort("192.168.200.101", 7004);
        HostAndPort hap5 = new HostAndPort("192.168.200.101", 7005);
        HostAndPort hap6 = new HostAndPort("192.168.200.102", 7006);
        HostAndPort hap7 = new HostAndPort("192.168.200.102", 7007);
        HostAndPort hap8 = new HostAndPort("192.168.200.102", 7008);
        nodes.add(hap0);
        nodes.add(hap1);
        nodes.add(hap2);
        nodes.add(hap3);
        nodes.add(hap4);
        nodes.add(hap5);
        nodes.add(hap6);
        nodes.add(hap7);
        nodes.add(hap8);
        jedisCluster = new JedisCluster(nodes);

    }

    public static void main(String[] args) {
//        findByKey("top1");
//          deleByKey("top1");
        setByKey("test1");
    }

    /**
     * 根据redis 中的key，查询对应的值
     * @param key
     */
    public static void findByKey(String key) {
        try {//取字符串
            String value = jedisCluster.get(key);
            System.out.println(value);
        } catch (Exception e) {
            try {//取list
                // 取数据，第一个是key，第二个是起始位置，第三个是结束位置，jedis.llen获取长度 -1表示取得所有
                List<String> values = jedisCluster.lrange(key, 0, -1);
                System.out.println(values);
            } catch (Exception e2) {
                System.out.println("redis没有这个key");
            }
        }
    }

    /**
     * 根据key删除
     * @param key
     */
    public static void deleByKey(String key){
        Long del = jedisCluster.del(key);
        System.out.println("key = " + del);
    }

    public static void  setByKey(String key){
        jedisCluster.set(key,"value1");
    }
}