springboot整合redis

连接redis---->jedis
（1）导入依赖

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

（2）操作redis

package com.wyj.test;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisCluster;

import java.util.Set;

public class TestJedis {
    public static void main(String[] args) {
        Jedis jedis=new Jedis("192.168.213.188",6379);//必须运行远程连接 必须防火墙放行该端口号
        //关于字符串
        jedis.set("k1","v1");
        jedis.set("k8","18");
        jedis.mset("k2","v2","k3","v3","k4","v4");
        jedis.setnx("k1","12");
        jedis.decr("k8");

        //操作key
        Set<String> keys = jedis.keys("*");
        System.out.println("所有的key:"+keys);
        jedis.del("k1");
        jedis.expire("k2",60);
        jedis.ttl("k2");

    }
}

springboot整合redis
（1）引入依赖

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

（2）配置文件application

spring.redis.host=192.168.192.129
spring.redis.port=6379
spring.redis.jedis.pool.max-active=20
spring.redis.jedis.pool.max-idle=8
spring.redis.jedis.pool.min-idle=0
spring.redis.jedis.pool.max-wait=20000

（3）测试

package com.wyj.springbootredis01;

import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.core.ValueOperations;

import javax.annotation.Resource;
import java.util.*;
import java.util.concurrent.TimeUnit;

@SpringBootTest
class SpringbootRedis01ApplicationTests {

    @Autowired
    private StringRedisTemplate redisTemplate;
    @Test
    void contextLoads() {
        //操作key
        Set<String> keys = redisTemplate.keys("*");
        System.out.println(keys);

        redisTemplate.delete("k8");
        System.out.println(redisTemplate.getExpire("k3"));

        redisTemplate.expire("k3", 60, TimeUnit.SECONDS);

        System.out.println(redisTemplate.getExpire("k3"));

    }

    @Test
    public void testString(){
        ValueOperations<String, String> forValue = redisTemplate.opsForValue();//操作字符串类型
        forValue.set("k1","v1");
        System.out.println(forValue.get("k1"));

        Map<String,String> map=new HashMap<>();
        map.put("k9","v9");
        map.put("k10","v10");
        forValue.multiSet(map);

        List<String> keys=new ArrayList<>();
        keys.add("k1");
        keys.add("k2");
        keys.add("k4");
        List<String> strings = forValue.multiGet(keys);
        System.out.println(strings);

        System.out.println(forValue.setIfAbsent("k2", "v2"));

    }

}

springboot连接redis

package com.wyj.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.*;

import java.time.Duration;

@EnableCaching
@Configuration
public class RedisConfig extends CachingConfigurerSupport {
   
    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        RedisSerializer<String> redisSerializer = new StringRedisSerializer();
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        template.setConnectionFactory(factory);
        //key序列化方式
        template.setKeySerializer(redisSerializer);
        //value序列化
        template.setValueSerializer(jackson2JsonRedisSerializer);
        //value hashmap序列化
        template.setHashValueSerializer(jackson2JsonRedisSerializer);
        return template;
    }

    @Bean
    public CacheManager cacheManager(RedisConnectionFactory factory) {
        RedisSerializer<String> redisSerializer = new StringRedisSerializer();
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        //解决查询缓存转换异常的问题
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        // 配置序列化（解决乱码的问题）,过期时间600秒
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(Duration.ofSeconds(600)) //缓存过期10分钟 ---- 业务需求。
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))//设置key的序列化方式
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer)) //设置value的序列化
                .disableCachingNullValues();
        RedisCacheManager cacheManager = RedisCacheManager.builder(factory)
                .cacheDefaults(config)
                .build();
        return cacheManager;
    }
}

springboot连接redis集群
（1）哨兵

spring.redis.sentinel.master=mymaster
spring.redis.sentinel.nodes=192.168.192.129:26379

（2） 去中心化集群

spring.redis.cluster.nodes=192.168.192.129:8001,
							192.168.192.129:8002,
							192.168.192.129:8003,
							192.168.192.129:8004,
							192.168.192.129:8005,
							192.168.192.129:8006