Redis——Jedis操作Redis6

Jedis 操作 Redis6

1、Jedis 所需要的 jar 包2、连接 Redis 注意事项3、Jedis 常用操作

3.1、创建测试程序3.2、Jedis-API: Key3.3、Jedis-API: String3.4、Jedis-API: List3.5、Jedis-API: set3.6、Jedis-API: hash3.7、Jedis-API: zset

	redis.clients
	jedis
	4.1.1

禁用 Linux 的防火墙：Linux（CentOS7）里执行命令

systemctl stop firewalld

或者永久禁用：

systemctl disable firewalld

redis.conf 中注释掉 bind 127.0.0.1 ，然后 protected-mode no

public class JedisDemo1 {
    public static void main(String[] args) {
        //1、创建一个Jedis对象
        Jedis jedis = new Jedis("192.168.196.128", 6379);

        //测试
        String value = jedis.ping();
        System.out.println(value); //PONG

    }
}

@Test
public void Test1(){
    //创建一个Jedis对象
    Jedis jedis = new Jedis("192.168.196.128", 6379);

    //添加
    jedis.set("name", "lucy");
    //获取
    String name = jedis.get("name");
    System.out.println(name); //lucy

    //是否存在key
    System.out.println(jedis.exists("k1")); //false
    System.out.println(jedis.exists("name")); //true

    //过期时间
    System.out.println(jedis.ttl("k1")); //-2


    Set keys = jedis.keys("*");
    for (String key :
            keys) {
        System.out.println(key); //name
    }
}

//设置多个key-value
jedis.mset("k1", "v1", "k2", "v2");
List mget = jedis.mget("k1", "k2");
System.out.println(mget); //[v1, v2]

//操作list
@Test
public void Test2() {
    //创建一个Jedis对象
    Jedis jedis = new Jedis("192.168.196.128", 6379);

    jedis.lpush("key1", "lucy", "mary", "jack");
    List values = jedis.lrange("key1", 0, -1);
    System.out.println(values); //[jack, mary, lucy]
}

//操作set
@Test
public void Test3() {
    //创建一个Jedis对象
    Jedis jedis = new Jedis("192.168.196.128", 6379);

    jedis.sadd("names", "lucy");
    jedis.sadd("names", "jack");

    Set names = jedis.smembers("names");
    System.out.println(names); //[jack, lucy]

    jedis.srem("names", "lucy");
    Set name_post = jedis.smembers("names");
    System.out.println(name_post); //[jack]
}

//操作hash
@Test
public void Test4() {
    //创建一个Jedis对象
    Jedis jedis = new Jedis("192.168.196.128", 6379);

    jedis.hset("users", "age", "20");
    String age = jedis.hget("users", "age");
    System.out.println(age); //20
}

//操作zset
@Test
public void Test5() {
    //创建一个Jedis对象
    Jedis jedis = new Jedis("192.168.196.128", 6379);

    jedis.zadd("china", 100d, "shanghai");
    jedis.zadd("china", 80d, "xi'an");

    List zrange = jedis.zrange("china", 0, -1);
    System.out.println(zrange); //[xi'an, shanghai]
}