redis拾遗（二）——jedis连接redis

前言

上一篇博客中介绍了redis的基本数据，这篇博客就简单介绍通过客户端操作redis。

简单连接实例

1、新建一个简单的项目，在pom.xml中引入如下依赖

    <dependencies>
        <dependency>
            <groupId>redis.clientsgroupId>
            <artifactId>jedisartifactId>
            <version>2.9.0version>
        dependency>

        <dependency>
            <groupId>org.apache.commonsgroupId>
            <artifactId>commons-lang3artifactId>
            <version>3.4version>
        dependency>

        <dependency>
            <groupId>commons-iogroupId>
            <artifactId>commons-ioartifactId>
            <version>2.4version>
        dependency>

        <dependency>
            <groupId>com.google.guavagroupId>
            <artifactId>guavaartifactId>
            <version>21.0version>
        dependency>

        
        <dependency>
            <groupId>org.projectlombokgroupId>
            <artifactId>lombokartifactId>
            <version>1.16.20version>
        dependency>
        <dependency>
            <groupId>org.slf4jgroupId>
            <artifactId>slf4j-apiartifactId>
            <version>1.7.5version>
        dependency>
        <dependency>
            <groupId>org.slf4jgroupId>
            <artifactId>slf4j-simpleartifactId>
            <version>1.7.25version>
        dependency>
        
    dependencies>

2、编写一个简单的测试类

@Slf4j
public class SimpleTest {
    public static void main(String[] args) {
        Jedis jedis = new Jedis("192.168.72.128", 6379);
        jedis.set("liman", "2673");
        log.info("jedis simple get result:{}",jedis.get("liman"));
        jedis.close();
    }
}

3、运行结果

对一些数据类型的操作

这里以zset和hash为例进行说明

zset

/**
 * autor:liman
 * createtime:2020/7/4
 * comment:ZSet的实例
 */
@Slf4j
public class ZSetTest {
    public static void main(String[] args) {
        Jedis jedis = new Jedis("192.168.72.128", 6379);
        //zadd 往zset中增加元素
        jedis.zadd("myzset", 20, "java");
        jedis.zadd("myzset", 30, "python");
        jedis.zadd("myzset", 90, "ruby");
        jedis.zadd("myzset", 40, "erlang");
        jedis.zadd("myzset", 70, "cpp");
        jedis.zadd("myzset", 50, "android");

        //按照分数倒序排列
        Set<String> set = jedis.zrevrangeByScore("myzset", 100, 10);
        log.info("redis zset content:{}",set);
    }
}

运行结果

hash

/**
 * autor:liman
 * createtime:2020/7/4
 * comment:
 */
@Slf4j
public class HashTest {
    public static void main(String[] args) {
        Jedis jedis = new Jedis("192.168.72.128", 6379);
        Map<String,String> hmap = new HashMap<>();
        hmap.put("h1","a");
        hmap.put("h2","b");
        hmap.put("h3","c");
        hmap.put("h4","d");
        hmap.put("h5","e");
        //存放map元素
        jedis.hmset("hmap",hmap);
        //获取map元素
        List<String> mapValue = jedis.hmget("hmap", "h1", "h2", "h3", "h4", "h5");
        log.info("hmapValue:{}",mapValue);
    }
}

运行结果

总结

本篇博客简单实用jedis连接redis进行了相关操作，比较简单，后面的redis博客总结会在这个基础上进行一些案例的操作。