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Redis maven项目 jedis 客户端操作（二）

article 2025/3/6 8:00:04

（1）List类型value的方法调用样例，包含lpush，lrange，lpop，rpop，blpop，llen

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

import java.util.List;

public class RedisDemoList {
    public static void test1(Jedis jedis) {
        System.out.println("lpush  lrange:");
        jedis.flushAll();
        jedis.lpush("key","1","2","3","4","5","6","7","8","9");
        List<String> list = jedis.lrange("key",0,-1);
        System.out.println(list);
    }
    public static void test2(Jedis jedis) {
        System.out.println("rpush:");
        jedis.flushAll();
        jedis.rpush("key","1","2","3","4","5");
        List<String> list = jedis.lrange("key",0,-1);
        System.out.println(list);
    }
    public static void test3(Jedis jedis) {
        System.out.println("lpop:");
        jedis.flushAll();
        jedis.rpush("key","1","2","3","4","5");
        List<String> list = jedis.lrange("key",0,-1);
        System.out.println(list);
        String result=jedis.lpop("key");
        list = jedis.lrange("key",0,-1);
        System.out.println(list);
        for (int i = 0; i < 5; i++) {
            String x = jedis.lpop("key");
            System.out.println(x);

        }

    }
    public static void test4(Jedis jedis) {
        System.out.println("rpop:");
        jedis.flushAll();
        jedis.rpush("key","1","2","3","4","5");
        for (int i = 0; i < 6; i++) {
            String x = jedis.rpop("key");
            System.out.println(x);
        }
    }
    public static void test5(Jedis jedis) {
        System.out.println("blpop:");
        jedis.flushAll();
        //返回结果是二元组，第一个是弹出的哪个key，第二个是弹出的value
        List<String>result =jedis.blpop(100,"key");
        System.out.println(result.get(0));
        System.out.println(result.get(1));
    }
    public static void test6(Jedis jedis) {
        System.out.println("llen:");
        jedis.flushAll();
        jedis.rpush("key","1","2","3","4","5");
        long length=jedis.llen("key");
        System.out.println(length);
    }
    public static void main(String[] args) {
        JedisPool jedisPool = new JedisPool("127.0.0.1", 8888);
            try (Jedis jedis = jedisPool.getResource()) {
                test6(jedis);
            }

    }
}

（2）hash类型value的方法调用，包含hset，hget，hexists，hdel，hkeys，hvals，hmget，hmset：

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

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class RedisDemoHash {
    public static void test1(Jedis jedis) {
        System.out.println("hset 和 hget :");
        jedis.flushAll();
        jedis.hset("key","f1","111");
        Map<String,String> fields = new HashMap<String, String>();
        fields.put("f2","222");
        fields.put("f3","333");
        jedis.hset("key",fields);
        String result =jedis.hget("key","f1");
        System.out.println(result);
        result = jedis.hget("key","f2");
        System.out.println(result);
        result = jedis.hget("key","f100");
        System.out.println(result);

    }
    public static void test2(Jedis jedis) {
        System.out.println("hexists :");
        jedis.flushAll();
        jedis.hset("key","f1","111");
        jedis.hset("key","f2","222");
        jedis.hset("key","f3","333");
        boolean result = jedis.hexists("key","f1");
        System.out.println(result);
        result = jedis.hexists("key","f100");
        System.out.println(result);
    }
    public static void test3(Jedis jedis) {
        System.out.println("hdel :");
        jedis.flushAll();
        jedis.hset("key","f1","111");
        jedis.hset("key","f2","222");
        jedis.hset("key","f3","333");
        long count = jedis.hdel("key","f1","f2");
        System.out.println(count);
        boolean result = jedis.hexists("key","f1");
        System.out.println(result);
        result = jedis.hexists("key","f3");
        System.out.println(result);
    }
    public static void test4(Jedis jedis) {
        System.out.println("hkeys 和 hvals");
        jedis.flushAll();

        jedis.hset("key","f1","111");
        jedis.hset("key","f2","222");
        jedis.hset("key","f3","333");
        Set<String> keys = jedis.hkeys("key");
        System.out.println(keys);
        List<String> values = jedis.hvals("key");
        System.out.println(values);
    }
    public static void test5(Jedis jedis) {
        System.out.println("hmget 和 hmset :");
        jedis.flushAll();
        Map<String,String> map = new HashMap<>();
        map.put("f1","111");
        map.put("f2","222");
        map.put("f3","333");
        jedis.hmset("key",map);
        List<String> values = jedis.hmget("key","f1","f2","f3");
        System.out.println(values);
    }
    public static void main(String[] args) {
        JedisPool jedisPool = new JedisPool("127.0.0.1", 8888);
        try (Jedis jedis = jedisPool.getResource()) {
            test5(jedis);
        }
    }
}

（3）Set类型value的方法调用，包含sadd，smembers，sismember，scard，spop，sinter，sinterstore

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

import java.util.Set;

public class RedisDemoSet {
    public static void test1(Jedis jedis){
        System.out.println("sadd 和 smembers:");
        jedis.flushAll();
        jedis.sadd("key","1","2","3","4","5","6","7","8","9");
        Set<String> set = jedis.smembers("key");
        set.forEach(System.out::print);
    }
    public static void test2(Jedis jedis){
        System.out.println("sismember:");
        jedis.flushAll();
        jedis.sadd("key","1","2","3","4","5","6","7","8","9");
        System.out.println(jedis.sismember("key", "111"));
    }
    public static void test3(Jedis jedis){
        System.out.println("scard:");
        jedis.flushAll();
        jedis.sadd("key","1","2","3","4","5","6","7","8","9");
        long count = jedis.scard("key");
        System.out.println(count);
    }
    public static void test4(Jedis jedis){
        System.out.println("spop:");
        jedis.flushAll();
        jedis.sadd("key","1","2","3");
        String result = jedis.spop("key");
        System.out.println(result);
    }
    public static void test5(Jedis jedis){
        System.out.println("sinter :");
        jedis.flushAll();
        jedis.sadd("key","1","2","3");
        jedis.sadd("key2","1","2","4");
        Set<String> result= jedis.sinter("key","key2");
        System.out.println(result);
    }
    public static void test6(Jedis jedis){
        System.out.println("sinterstore:");
        jedis.flushAll();
        jedis.sadd("key","1","2","3","4");
        jedis.sadd("key2","1","2","4","5");
        jedis.sinterstore("key3","key","key2");
        Set<String> result = jedis.smembers("key3");
        System.out.println(result);
    }
    public static void main(String[] args) {
        JedisPool jedisPool = new JedisPool("127.0.0.1", 8888);
        try (Jedis jedis = jedisPool.getResource()) {
            test6(jedis);
        }
    }
}

（4）zset类型value的方法调用，包含zadd，zrange，zcard，zrem，zscore，zrank

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.resps.Tuple;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class RedisDemozset {
    public static void test1(Jedis jedis){
        System.out.println("zadd 和 zrange");
        jedis.flushAll();

        jedis.zadd("key",99,"kzf");
        Map<String,Double>map = new HashMap<>();
        map.put("whx",88.0);
        map.put("lyz",77.0);
        jedis.zadd("key",map);
        //这里考虑到zset有序性的特点，所以用List而不是Set，虽然也具有唯一性
        List<String> result = jedis.zrange("key",0,-1);
        System.out.println(result);
        List<Tuple> tuples = jedis.zrangeWithScores("key",0,-1);
        System.out.println(tuples);
        String member = tuples.get(0).getElement();
        Double score = tuples.get(0).getScore();
        System.out.println(member);
        System.out.println(score);

    }
    public static void test2(Jedis jedis){
        System.out.println("zcard:");
        jedis.flushAll();
        jedis.zadd("key",99,"kzf");
        jedis.zadd("key",88,"whx");
        jedis.zadd("key",77,"lyz");
        long len = jedis.zcard("key");
        System.out.println(len);
    }
    public static void test3(Jedis jedis){
        System.out.println("zrem:");
        jedis.flushAll();
        jedis.zadd("key",99,"kzf");
        jedis.zadd("key",88,"whx");
        jedis.zadd("key",77,"lyz");
        long result = jedis.zrem("key","whx");
        System.out.println(result);
        List<Tuple> tuples = jedis.zrangeWithScores("key",0,-1);
        System.out.println(tuples);
    }
    public static void test4(Jedis jedis){
        System.out.println("zscore:");
        jedis.flushAll();
        jedis.zadd("key",99,"kzf");
        jedis.zadd("key",88,"whx");
        jedis.zadd("key",77,"lyz");
        //这里的Double使用包装类，因为可能获取分数的member不存在
        //这时候就可以正常返回空值，而不是空指针异常
        Double score= jedis.zscore("key","whx");
        System.out.println(score);
        score = jedis.zscore("key","zzz");
        System.out.println(score);
    }
    public static void test5(Jedis jedis){
        System.out.println("zrank:");
        jedis.flushAll();
        jedis.zadd("key",99,"kzf");
        jedis.zadd("key",88,"whx");
        jedis.zadd("key",77,"lyz");
        //主要rank是从0开始的，不是1，zset默认按分数升序，同分数看member名的字典序
        Long rank = jedis.zrank("key","whx");
        System.out.println(rank);
    }
    public static void main(String[] args) {
        JedisPool jedisPool = new JedisPool("127.0.0.1", 8888);
        try (Jedis jedis = jedisPool.getResource()) {
            test5(jedis);
        }

    }
}