Java开发中对Redis的基本操作总结

1. Window 下安装 Redis：

下载地址：https://github.com/MSOpenTech/redis/releases

打开一个 cmd 窗口 使用cd命令切换目录到 C:\redis 运行 redis-server.exe redis.windows.conf 

这时候另启一个cmd窗口，原来的不要关闭，不然就无法访问服务端了。

切换到redis目录下运行 redis-cli.exe -h 127.0.0.1 -p 6379 。

首先你需要下载最新驱动包：https://mvnrepository.com/artifact/redis.clients/jedis

import redis.clients.jedis.Jedis;

public class RedisJava {
    public static void main(String[] args) {
        //连接本地的 Redis 服务
        Jedis jedis = new Jedis("localhost");
        System.out.println("连接成功");
        //查看服务是否运行
        System.out.println("服务正在运行: "+jedis.ping());
    }

　}　

package redisTest;


import redis.clients.jedis.*;

import java.util.ArrayList;
import java.util.List;

public class RedisJava {
    /**
     * 非切片客户端链接
     */
    private Jedis jedis;
    /**
     * 非切片链接池
     */
    private JedisPool jedisPool;
    /**
     * 切片客户端链接
     */
    private ShardedJedis shardedJedis;
    /**
     * 切片链接池
     */
    private ShardedJedisPool shardedJedisPool;


    private String ip = "127.0.0.1";
    /**
     * 构造函数
     */
    public RedisJava() {
        initialPool();
        initialShardedPool();
        shardedJedis = shardedJedisPool.getResource();
        jedis = jedisPool.getResource();
    }

    private void initialPool() {
        // 池基本配置
        JedisPoolConfig config = new JedisPoolConfig();
        config.setMaxTotal(20);
        config.setMaxIdle(5);
        config.setMaxWaitMillis(1000L);
        config.setTestOnBorrow(false);
        jedisPool = new JedisPool(config, ip, 6379);
    }

    /**
     * 初始化切片池
     */
    private void initialShardedPool() {
        // 池基本配置
        JedisPoolConfig config = new JedisPoolConfig();
        config.setMaxTotal(20);
        config.setMaxIdle(5);
        config.setMaxWaitMillis(1000L);
        config.setTestOnBorrow(false);
        // slave链接
        List<JedisShardInfo> shards = new ArrayList<JedisShardInfo>();
        shards.add(new JedisShardInfo(ip, 6379, "master"));
        // 构造池
        shardedJedisPool = new ShardedJedisPool(config, shards);
    }

    public static void main(String[] args) {
        RedisJava aj=new RedisJava();
        aj.redisTest();
    }

    public  void redisTest(){
        // key检测
//        testKey();
        // string检测
        testString();
        // list检测
//        testList();
        // set检测
//        testSet();
        // sortedSet检测
//        testSortedSet();
        // hash检测
//        testHash();
        shardedJedisPool.close();
    }

    private void testKey() {
        System.out.println("=============key==========================");
        // 清空数据
        System.out.println(jedis.flushDB());
        System.out.println(jedis.echo("foo"));
        // 判断key否存在
        System.out.println(shardedJedis.exists("foo"));
        shardedJedis.set("key", "values2222");
        System.out.println(shardedJedis.exists("key"));
    }

    private void testString() {
        System.out.println("=============String==========================");
        // 清空数据
        System.out.println(jedis.flushDB());
        // 存储数据
        shardedJedis.set("foo", "bar");
        System.out.println(shardedJedis.get("foo"));
        // 若key不存在，则存储
        shardedJedis.setnx("foo", "foo not exits");
        System.out.println(shardedJedis.get("foo"));
        // 覆盖数据
        shardedJedis.set("foo", "foo update");
        System.out.println(shardedJedis.get("foo"));
        // 追加数据
        shardedJedis.append("foo", " hello, world");
        System.out.println(shardedJedis.get("foo"));
        // 设置key的有效期，并存储数据
        shardedJedis.setex("foo", 2, "foo not exits");
        System.out.println(shardedJedis.get("foo"));
        try {
            Thread.sleep(3000);
        } catch (InterruptedException e) {
        }
        System.out.println(shardedJedis.get("foo"));
        // 获取并更改数据
        shardedJedis.set("foo", "foo update");
        System.out.println(shardedJedis.getSet("foo", "foo modify"));
        // 截取value的值
        System.out.println(shardedJedis.getrange("foo", 1, 3));
        System.out.println(jedis.mset("mset1", "mvalue1", "mset2", "mvalue2",
                "mset3", "mvalue3", "mset4", "mvalue4"));
        System.out.println(jedis.mget("mset1", "mset2", "mset3", "mset4"));
        System.out.println(jedis.del(new String[] { "foo", "foo1", "foo3" }));
    }

    private void testList() {
        System.out.println("=============list==========================");
        // 清空数据
        System.out.println(jedis.flushDB());
        // 添加数据
        shardedJedis.lpush("lists", "vector");
        shardedJedis.lpush("lists", "ArrayList");
        shardedJedis.lpush("lists", "LinkedList");
        // 数组长度
        System.out.println(shardedJedis.llen("lists"));
        // 排序
        // System.out.println(shardedJedis.sort("lists"));
        // 字串
        System.out.println(shardedJedis.lrange("lists", 0, 3));
        // 修改列表中单个值
        shardedJedis.lset("lists", 0, "hello list!");
        // 获取列表指定下标的值
        System.out.println(shardedJedis.lindex("lists", 1));
        // 删除列表指定下标的值
        System.out.println(shardedJedis.lrem("lists", 1, "vector"));
        // 删除区间以外的数据
        System.out.println(shardedJedis.ltrim("lists", 0, 1));
        // 列表出栈
        System.out.println(shardedJedis.lpop("lists"));
        // 整个列表值
        System.out.println(shardedJedis.lrange("lists", 0, -1));
    }

    private void testSet() {
        System.out.println("=============set==========================");
        // 清空数据
        System.out.println(jedis.flushDB());
        // 添加数据
        shardedJedis.sadd("sets", "HashSet");
        shardedJedis.sadd("sets", "SortedSet");
        shardedJedis.sadd("sets", "TreeSet");
        // 判断value是否在列表中
        System.out.println(shardedJedis.sismember("sets", "TreeSet"));

        // 整个列表值
        System.out.println(shardedJedis.smembers("sets"));
        // 删除指定元素
        System.out.println(shardedJedis.srem("sets", "SortedSet"));
        // 出栈
        System.out.println(shardedJedis.spop("sets"));
        System.out.println(shardedJedis.smembers("sets"));
        //
        shardedJedis.sadd("sets1", "HashSet1");
        shardedJedis.sadd("sets1", "SortedSet1");
        shardedJedis.sadd("sets1", "TreeSet");
        shardedJedis.sadd("sets2", "HashSet2");
        shardedJedis.sadd("sets2", "SortedSet1");
        shardedJedis.sadd("sets2", "TreeSet1");
        // 交集
        System.out.println(jedis.sinter("sets1", "sets2"));
        // 并集
        System.out.println(jedis.sunion("sets1", "sets2"));
        // 差集
        System.out.println(jedis.sdiff("sets1", "sets2"));
    }

    private void testSortedSet() {
        System.out.println("=============zset==========================");
        // 清空数据
        System.out.println(jedis.flushDB());
        // 添加数据
        shardedJedis.zadd("zset", 10.1, "hello");
        shardedJedis.zadd("zset", 10.0, ":");
        shardedJedis.zadd("zset", 9.0, "zset");
        shardedJedis.zadd("zset", 11.0, "zset!");
        // 元素个数
        System.out.println(shardedJedis.zcard("zset"));
        // 元素下标
        System.out.println(shardedJedis.zscore("zset", "zset"));
        // 集合子集
        System.out.println(shardedJedis.zrange("zset", 0, -1));
        // 删除元素
        System.out.println(shardedJedis.zrem("zset", "zset!"));
        System.out.println(shardedJedis.zcount("zset", 9.5, 10.5));
        // 整个集合值
        System.out.println(shardedJedis.zrange("zset", 0, -1));
    }

    private void testHash() {
        System.out.println("=============hash==========================");
        // 清空数据
        System.out.println(jedis.flushDB());
        // 添加数据
        shardedJedis.hset("hashs", "entryKey", "entryValue");
        shardedJedis.hset("hashs", "entryKey1", "entryValue1");
        shardedJedis.hset("hashs", "entryKey2", "entryValue2");
        // 判断某个值是否存在
        System.out.println(shardedJedis.hexists("hashs", "entryKey"));
        // 获取指定的值
        System.out.println(shardedJedis.hget("hashs", "entryKey"));
        // 批量获取指定的值
        System.out
                .println(shardedJedis.hmget("hashs", "entryKey", "entryKey1"));
        // 删除指定的值
        System.out.println(shardedJedis.hdel("hashs", "entryKey"));
        // 为key中的域 field 的值加上增量 increment
        System.out.println(shardedJedis.hincrBy("hashs", "entryKey", 123l));
        // 获取所有的keys
        System.out.println(shardedJedis.hkeys("hashs"));
        // 获取所有的values
        System.out.println(shardedJedis.hvals("hashs"));
    }
}

Java开发中对Redis的基本操作总结

原文：https://www.cnblogs.com/ht22ht22/p/11760593.html