Redis和Java的爱恨情仇之常见结构命令

string

mget和mset

public class RedisDemoString {
    public static void main(String[] args) {
        JedisPool jedisPool = new JedisPool("tcp://127.0.0.1:8888");
        try (Jedis jedis = jedisPool.getResource()) {
            test1(jedis);
        }
    }
 
    public static void test1(Jedis jedis) {
        jedis.flushAll();
 
        jedis.mset("key1", "value1", "key2", "value2");
 
        List values = jedis.mget("key1", "key2","key111");
        System.out.println(values);
    }
}

此处多个key得到的value的顺序都是和key匹配的，如果某个key在redis上不存在，对应的value使用null表示

getrange和setrange

private static void test2(Jedis jedis) {
        jedis.flushAll();
 
        jedis.set("key", "abcdefghijkl");
        String str1 = jedis.getrange("key",2,5);
        System.out.println(str1);
        
        jedis.setrange("key",2,"xyz");
        String str2 = jedis.get("key");
        System.out.println(str2);
 
    }

append

private static void test3(Jedis jedis) {
        jedis.flushAll();
        
        jedis.set("key", "bar");
        jedis.append("key", "baz");
 
        System.out.println(jedis.get("key"));
    }

incr和decr

private static void test4(Jedis jedis) {
        jedis.flushAll();
        
        jedis.set("foo", "bar");
        System.out.println(jedis.incr("key"));
        System.out.println(jedis.get("key"));
    }

private static void test4(Jedis jedis) {
        jedis.flushAll();
 
        jedis.set("foo", "bar");
        System.out.println(jedis.incr("key"));
        System.out.println(jedis.get("key"));
 
        jedis.decr("key");
        System.out.println(jedis.get("key"));
    }

List

lpush和lrange

private static void test1(Jedis jedis) {
        jedis.flushAll();
 
        jedis.lpush("key","111","222","333","444","555","666");
 
        System.out.println(jedis.lrange("key", 0, -1));
    }

rpush，rpop，lpop

private static void test2(Jedis jedis) {
        jedis.flushAll();
 
        jedis.rpush("key","111","222","333","444","555","666");
        System.out.println(jedis.lrange("key", 0, -1));
 
    }

private static void test3(Jedis jedis) {
        jedis.flushAll();
 
        jedis.rpush("key","111","222","333","444","555","666");
        jedis.rpop("key");
        System.out.println(jedis.lrange("key", 0, -1));
 
        System.out.println(jedis.lpop("key"));
    }

blpop，brpop

private static void test4(Jedis jedis) {
        jedis.flushAll();
 
        List str1 = jedis.blpop(5,"key");
        System.out.println(str1);
        //返回的结果是一个二元组，一个是从哪个key对应的list中删除的，一个是删除的元素是什么
        jedis.lpush("key","111","222","333","444","555","666");
 
    }

llen

private static void test5(Jedis jedis) {
        jedis.flushAll();
        
        jedis.rpush("key","111","222","333","444","555","666");
        System.out.println(jedis.llen("key"));
    }

set

sadd，smembers

public static void test1(Jedis jedis) {
        jedis.flushAll();
 
        jedis.sadd("key","111","222","333","444","555","666");
        System.out.println(jedis.smembers("key"));
    }

sismember

 public static void test2(Jedis jedis) {
        jedis.flushAll();
        
        jedis.sadd("key","111","222","333","444","555","666");
        System.out.println(jedis.sismember("key", "111"));
    }

scard

public static void test3(Jedis jedis) {
        jedis.flushAll();
 
        jedis.sadd("key","111","222","333","444","555","666");
        System.out.println(jedis.scard("key"));
    }

spop

public static void test4(Jedis jedis) {
 
        jedis.flushAll();
 
        jedis.sadd("key","111","222","333","444","555","666");
        System.out.println(jedis.spop("key"));
        System.out.println(jedis.spop("key"));
        System.out.println(jedis.spop("key"));
        System.out.println(jedis.spop("key"));
        System.out.println(jedis.spop("key"));
        System.out.println(jedis.spop("key"));
    }

sinter，sinterstore

public static void test5(Jedis jedis) {
        jedis.flushAll();
        
        jedis.sadd("key","111","222","333","444","555","666");
        jedis.sadd("key1","111","222","444");
 
        System.out.println(jedis.sinter("key", "key1"));
    }

static void test6(Jedis jedis) {
        jedis.flushAll();
 
        jedis.sadd("key","111","222","333","444","555","666");
        jedis.sadd("key1","111","222","444");
 
        System.out.println(jedis.sinterstore("key3", "key", "key1"));
        System.out.println(jedis.smembers("key3"));
    }

Hash

hset，hget

public static void test1(Jedis jedis) {
        jedis.flushAll();
 
        jedis.hset("key", "f1", "111");
        Map fields = new HashMap<>();
 
        fields.put("f1", "111");
        fields.put("f2", "222");
 
        jedis.hmset("key", fields);
        System.out.println(jedis.hgetAll("key"));
        System.out.println(jedis.hdel("key", "f2"));
        System.out.println(jedis.hget("key","f100"));
    }

hexists

public static void test2(Jedis jedis) {
        jedis.flushAll();
 
        jedis.hset("key", "f1", "111");
        jedis.hset("key", "f2", "22");
        jedis.hset("key", "f3", "333");
 
        System.out.println(jedis.exists("key"));
        System.out.println(jedis.exists("key","f100"));
    }

hdel

public static void test3(Jedis jedis) {
        jedis.flushAll();
 
        jedis.hset("key", "f1", "111");
        jedis.hset("key", "f2", "22");
        jedis.hset("key", "f3", "333");
 
        System.out.println(jedis.hdel("key", "f1"));
        System.out.println(jedis.hdel("key", "f2"));
        System.out.println(jedis.hgetAll("key"));
    }

hkeys，hvals

public static void test4(Jedis jedis) {
        jedis.flushAll();
 
        jedis.hset("key", "f1", "111");
        jedis.hset("key", "f2", "22");
        jedis.hset("key", "f3", "333");
 
 
        System.out.println(jedis.hkeys("key"));
        System.out.println(jedis.hvals("key"));
    }

hmget，hmset

 public static void test4(Jedis jedis) {
        jedis.flushAll();
 
        Map map = new HashMap<>();
        map.put("f1", "111");
        map.put("f2", "1222");
        map.put("f3", "113");
 
        jedis.hmset("key", map);
 
        List keys = jedis.hmget("key","f1","f2","f3");
        System.out.println(keys);
    }

zset

zadd，zrange

public static void test1(Jedis jedis) {
        jedis.flushAll();
 
        jedis.zadd("key",11,"zahngsan");
        Map zset = new HashMap<>();
        
        zset.put("ke22y", 20.0);
        zset.put("k232342ey", 204.0);
        zset.put("ke42432y", 220.0);
        jedis.zadd("key",zset);
 
        System.out.println(jedis.zrange("key", 0, -1));
        System.out.println(jedis.zrangeWithScores("key", 0, -1));
 
    }

public static void test1(Jedis jedis) {
        jedis.flushAll();
 
        jedis.zadd("key",11,"zahngsan");
        Map zset = new HashMap<>();
 
        zset.put("ke22y", 20.0);
        zset.put("k232342ey", 204.0);
        zset.put("ke42432y", 220.0);
        jedis.zadd("key",zset);
        List membersWithScore = jedis.zrangeWithScores("key", 0, -1);
 
        System.out.println(jedis.zrange("key", 0, -1));
        System.out.println(jedis.zrangeWithScores("key", 0, -1));
        String str1 = membersWithScore.get(0).getElement();
        Double db2 = membersWithScore.get(0).getScore();
    }

zcard

public static void test2(Jedis jedis) {
        System.out.println("zcard");
        jedis.flushAll();
 
        jedis.zadd("key", 10, "zhangsan");
        jedis.zadd("key", 20, "lisi");
        jedis.zadd("key", 30, "wangwu");
 
        long len = jedis.zcard("key");
        System.out.println("len: " + len);
    }

zrem

public static void test3(Jedis jedis) {
        System.out.println("zrem");
        jedis.flushAll();
 
        jedis.zadd("key", 10, "zhangsan");
        jedis.zadd("key", 20, "lisi");
        jedis.zadd("key", 30, "wangwu");
 
        long n = jedis.zrem("key", "zhangsan", "lisi");
        System.out.println("n: " + n);
 
        List result = jedis.zrangeWithScores("key", 0, -1);
        System.out.println("result: " + result);
    }

zscore

public static void test4(Jedis jedis) {
        System.out.println("zscore");
        jedis.flushAll();
 
        jedis.zadd("key", 10, "zhangsan");
        jedis.zadd("key", 20, "lisi");
        jedis.zadd("key", 30, "wangwu");
 
        Double score = jedis.zscore("key", "zhangsan2");
        System.out.println("score: " + score);
    }

zrank

public static void test5(Jedis jedis) {
        System.out.println("zrank");
        jedis.flushAll();
 
        jedis.zadd("key", 10, "zhangsan");
        jedis.zadd("key", 20, "lisi");
        jedis.zadd("key", 30, "wangwu");
 
        Long rank = jedis.zrank("key", "zhangsan2");
        System.out.println("rank: " + rank);
    }

总结：

Jedis这个库的本质就是针对Redis的各种命令进行了封装，调用某个方法，就相当于在Redis客户端敲下了对应的命令