Redis (V) of NoSQL database: redis_ Jedis_ test

Jedis The required jar package

<dependency>
	<groupId>redis.clients</groupId>
	<artifactId>jedis</artifactId>
	<version>3.2.0</version>
</dependency>

Connect Redis matters needing attention

Ban Linux The firewall of ：Linux(CentOS7) To carry out an order

systemctl stop/disable firewalld.service   

redis.conf Note out bind 127.0.0.1 , then protected-mode no

Jedis Common operations

1、 Create a dynamic project

2、 Create a test program

package com.atguigu.jedis;
import redis.clients.jedis.Jedis;
public class Demo01 {
    
	public static void main(String[] args) {
    
		Jedis jedis = new Jedis("192.168.137.3",6379);
		String pong = jedis.ping();
		System.out.println(" Successful connection ："+pong);
		jedis.close();
	}
}

Test related data types

Jedis-API: Key

jedis.set("k1", "v1");
jedis.set("k2", "v2");
jedis.set("k3", "v3");
Set<String> keys = jedis.keys("*");
System.out.println(keys.size());
for (String key : keys) {
    
System.out.println(key);
}
System.out.println(jedis.exists("k1"));
System.out.println(jedis.ttl("k1")); 
System.out.println(jedis.get("k1"));

Jedis-API: String

jedis.mset("str1","v1","str2","v2","str3","v3");
System.out.println(jedis.mget("str1","str2","str3"));

Jedis-API: List

List<String> list = jedis.lrange("mylist",0,-1);
for (String element : list) {
    
	System.out.println(element);
}

Jedis-API: set

jedis.sadd("orders", "order01");
jedis.sadd("orders", "order02");
jedis.sadd("orders", "order03");
jedis.sadd("orders", "order04");
Set<String> smembers = jedis.smembers("orders");
for (String order : smembers) {
    
	System.out.println(order);
}
jedis.srem("orders", "order02");

Jedis-API: hash

jedis.hset("hash1","userName","lisi");
System.out.println(jedis.hget("hash1","userName"));
Map<String,String> map = new HashMap<String,String>();
map.put("telphone","13810169999");
map.put("address","atguigu");
map.put("email","[email protected]");
jedis.hmset("hash2",map);
List<String> result = jedis.hmget("hash2", "telphone","email");
for (String element : result) {
    
	System.out.println(element);
}

Jedis-API: zset

jedis.zadd("zset01", 100d, "z3");
jedis.zadd("zset01", 90d, "l4");
jedis.zadd("zset01", 80d, "w5");
jedis.zadd("zset01", 70d, "z6");
 
Set<String> zrange = jedis.zrange("zset01", 0, -1);
for (String e : zrange) {
    
	System.out.println(e);
}