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Redis的java客户端

• jedis
• Lettuce
• Spring Data Redis

Spring Data redis 是Spring的一部分，对 Redis 底层开发包进行了高度封装。在Spring项目中，可以使用Spring Data Redis来简化操作。

Spring Data Redis使用方式

操作步骤：

• 导入Spring Data Redis 的 maven 坐标
• 配置Redis的数据源
• 编写配置类，创建RedisTemplate对象
• 通过RedisTemplate对象操作Redis

1、导入Spring Data Redis 的 maven 坐标

<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-data-redis</artifactId></dependency>

2、配置Redis的数据源

spring:redis:host: 127.0.0.1port: 6379database: 1

3、编写配置类，创建RedisTemplate对象

package top.suweijie.redis.config;import cn.hutool.db.nosql.redis.RedisDS;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.StringRedisSerializer;/*** @Author suweijie* @Date 2024/1/9 17:01* @Description: TODO* @Version 1.0*/
@Slf4j
@Configuration
public class RedisConfig {@Beanpublic RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory) {log.info("redisTemplate init...");RedisTemplate redisTemplate = new RedisTemplate();redisTemplate.setKeySerializer(new StringRedisSerializer());redisTemplate.setConnectionFactory(redisConnectionFactory);return redisTemplate;}}

4、通过RedisTemplate操作Redis

package top.suweijie.redis;import jdk.nashorn.internal.runtime.regexp.joni.constants.OPSize;
import lombok.extern.slf4j.Slf4j;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.redis.core.*;
import org.springframework.test.context.junit4.SpringRunner;import java.util.List;
import java.util.concurrent.TimeUnit;/*** @Author suweijie* @Date 2024/1/9 17:05* @Description: TODO* @Version 1.0*/
@Slf4j
@SpringBootTest
@RunWith(SpringRunner.class)
public class RedisTest {@Autowiredprivate RedisTemplate redisTemplate;@Testpublic void test1() {ValueOperations stringObjectValueOperations = redisTemplate.opsForValue();HashOperations stringObjectObjectHashOperations = redisTemplate.opsForHash();ListOperations stringObjectListOperations = redisTemplate.opsForList();SetOperations setOperations = redisTemplate.opsForSet();ZSetOperations zSetOperations = redisTemplate.opsForZSet();}
}

操作字符串

 @Testpublic void dealString() {//set key valueredisTemplate.opsForValue().set("name","suweijie");//get keyString name = (String)redisTemplate.opsForValue().get("name");//setex key seconds valueredisTemplate.opsForValue().set("name","suweijie",60,TimeUnit.SECONDS);//setnx key valueredisTemplate.opsForValue().setIfAbsent("name","suweijie");redisTemplate.delete("name");}

操作哈希

@Testpublic void dealHash() {//hset key field valueredisTemplate.opsForHash().put("user","name","suweijie");redisTemplate.opsForHash().put("user","age","20");//hget key fieldString  name = (String)redisTemplate.opsForHash().get("user","name");log.info(name);//hdel key fieldredisTemplate.opsForHash().delete("user","age");//hkeys keySet keys = redisTemplate.opsForHash().keys("user");keys.forEach(System.out::println);//hvals keyList values = redisTemplate.opsForHash().values("user");values.forEach(System.out::println);}

操作列表

 @Testpublic void dealList() {//lpush key value1 value2redisTemplate.opsForList().leftPushAll("list","4","3","2","1");//lrange key start endList list = redisTemplate.opsForList().range("list", 0, -1);list.forEach(System.out::println);//rpop  keyString rightPop = (String) redisTemplate.opsForList().rightPop("list");log.info(rightPop);//llen keyLong size = redisTemplate.opsForList().size("list");log .info(size + "");}

操作集合

 @Testpublic void dealSet() {//sadd key member1 member2redisTemplate.opsForSet().add("set1","1","2","3","2");redisTemplate.opsForSet().add("set2","1","2","2","4");log.info("-------------------------------------------------");//smembers keySet set = redisTemplate.opsForSet().members("set1");set.forEach(System.out::println);log.info("-------------------------------------------------");//scard keyLong size = redisTemplate.opsForSet().size("set2");log.info(size + "");log.info("-------------------------------------------------");//sinter key1 key2Set intersect = redisTemplate.opsForSet().intersect("set1", "set2");intersect.forEach(System.out::println);log.info("-------------------------------------------------");Set union = redisTemplate.opsForSet().union("set1", "set2");union.forEach(System.out::println);}

操作有序集合

@Testpublic void dealZset() {//zadd score1 member1 socre2 member2redisTemplate.opsForZSet().add("zset1","swj",1);redisTemplate.opsForZSet().add("zset1","zat",2);//zrange key start end withscoresSet zset1 = redisTemplate.opsForZSet().rangeByScoreWithScores("zset1", 0, 3);zset1.forEach(System.out::println);//zincryby key increment memerredisTemplate.opsForZSet().incrementScore("zset1","zat",1);//zrem key member1 member2redisTemplate.opsForZSet().remove("zset1","swj");}