1.说明

Redis不仅可以使用命令行操作，
也支持大部分主流编程语言的客户端，
本文介绍Java客户端Jedis的使用，
Jedis API提供了完整的Redis命令，
能够和Redis命令行一一对应上。

2.引入Pom依赖

在pom.xml引入Jedis的依赖：

<dependency>
    <groupId>redis.clients</groupId>
    <artifactId>jedis</artifactId>
    <version>3.3.0</version>
</dependency>

3.创建Jedis连接

package com.yuwen.framework.demo;
import redis.clients.jedis.Jedis;

public class JedisDemo {
    public static void main(String[] args) {
        // 1.创建Jedis连接
        String host = "10.21.13.14";
        int port = 6379;
        Jedis jedis = new Jedis(host, port);
        // 2.检测连通性
        String result = jedis.ping();
        System.out.println("result=" + result);
        // 3.关闭Jedis连接
        jedis.close();
    }
}

配置真实的Redis服务器地址和端口，
运行main方法输出：

result=PONG

上面输出的pong对应ping命令，
表示Redis服务器连接正常。

4.Key相关测试

@Test
public void testKeys() {
    jedis.set("k1", "v1");
    jedis.set("k2", "v2");
    jedis.set("k3", "v3");

    Set<String> keys = jedis.keys("*");
    System.out.println(keys);

    String key = "k1";
    String value = jedis.get(key);
    System.out.println(key + " value=" + value);

    Boolean exists = jedis.exists(key);
    System.out.println(key + " exists=" + exists);

    Long ttl = jedis.ttl(key);
    System.out.println(key + " ttl=" + ttl);

    Long del = jedis.del("k1", "k2", "k3");
    System.out.println("k1,k2,k3" + " del=" + del);
}

5.String相关测试

@Test
public void testSetString() {
    jedis.set("s1", "v1");
    String value = jedis.get("s1");
    System.out.println("s1 value=" + value);
}

@Test
public void testMsetString() {
    jedis.mset("ms1", "mv1", "ms2", "mv2", "ms3", "mv3");
    List<String> mget = jedis.mget("ms1", "ms2", "ms3");
    System.out.println("ms1,2,3, values=" + mget);
}

6.List相关测试

@Test
public void testList() {
    jedis.lpush("list1", "lv1", "lv2", "lv3");
    List<String> list1 = jedis.lrange("list1", 0, -1);
    System.out.println("list1 lrange=" + list1);

    jedis.rpush("list2", "rv1", "rv2", "rv3");
    List<String> list2 = jedis.lrange("list2", 0, -1);
    System.out.println("list2 lrange=" + list2);

    jedis.rpop("list2");
    jedis.lpop("list2");
    list2 = jedis.lrange("list2", 0, -1);
    System.out.println("list2 lrange=" + list2);
}

7.Set相关测试

@Test
public void testSet() {
    String key1 = "set1";
    jedis.sadd(key1, "tom");
    jedis.sadd(key1, "jerry");
    jedis.sadd(key1, "lucy");

    Set<String> smembers = jedis.smembers(key1);
    System.out.println("set1 smembers=" + smembers);
}

8.Zset相关测试

@Test
public void testZset() {
    String key1 = "zset1";
    jedis.zadd(key1, 400d, "C");
    jedis.zadd(key1, 500d, "C++");
    jedis.zadd(key1, 100d, "Java");
    jedis.zadd(key1, 200d, "SQL");
    jedis.zadd(key1, 300d, "Python");

    Set<String> zrange1 = jedis.zrange(key1, 0, -1);
    System.out.println("zset1 [0,-1]=" + zrange1);

    Set<String> zrangeByScore1 = jedis.zrangeByScore(key1, 100, 300);
    System.out.println("zset1 [100,300]=" + zrangeByScore1);

    Set<Tuple> zrangeByScoreWithScores1 = jedis.zrangeByScoreWithScores(key1, 100, 300);
    System.out.println("zset1 [100,300]=" + zrangeByScoreWithScores1);

    Set<String> zrangeByScore2 = jedis.zrangeByScore(key1, "-inf", "+inf");
    System.out.println("zset1 [-inf,+inf]=" + zrangeByScore2);
}

9.Hash相关测试

@Test
public void testHash() {
    String key1 = "hash1";
    String field1 = "field1";
    String value1 = "value1";
    jedis.hset(key1, field1, value1);

    String hget1 = jedis.hget(key1, field1);
    System.out.println("hash1:field1 hget=" + hget1);

    String key2 = "hash2";
    Map<String, String> field2value = new HashMap<>();
    field2value.put("id", "90955");
    field2value.put("name", "yuwen");
    field2value.put("address", "changzhou");

    jedis.hmset(key2, field2value);

    List<String> hmget2 = jedis.hmget(key2, "id", "name");
    System.out.println("hash2:id,name hmget=" + hmget2);
}

10.参考文档

Redis 数据类型介绍
Github Jedis