一.在pom.xml文件中引入redis 相关包。

 <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
            <version>2.9.0</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-redis</artifactId>
    </dependency>

二.在配置文件application-jdbc.yml 中加入redis的相关配置.

 redis:
    # redis服务器地址（默认为localhost）
    #    host: 192.168.124.34
    host: localhost
    # redis端口（默认为6379）
    port: 6379
    # redis访问密码（默认为空）
    password: 123456
    # redis连接超时时间（单位毫秒）
    timeout: 30000
    # redis数据库索引（默认为0）
    database: 10
    lettuce:
      pool:
        max-active: 100 # 连接池最大连接数（使用负值表示没有限制）
        max-idle: 10 # 连接池中的最大空闲连接
        min-idle: 5 # 连接池中的最小空闲连接
        max-wait: 5000ms # 连接池最大阻塞等待时间（使用负值表示没有限制）
    jedis:
      pool:
        enabled: true
        max-idle: 100
        min-idle: 1
        auto-commit: true
        max-wait: 100000
        max-active: 100
        time-between-eviction-runs: 10000

三.在代码中编写redis的参数配置，数据调用，数据序列化，redis缓存配置代码

@Configuration
@Service
public class RedisService extends CachingConfigurerSupport {


    @Value("${spring.redis.database}")
    private int index;

    @Value("${spring.redis.host}")
    private String host;

    @Value("${spring.redis.port}")
    private int port;

    @Value("${spring.redis.timeout}")
    private int timeout;

    @Value("${spring.redis.password}")
    private String password;


    @Value("${spring.redis.jedis.pool.max-active}")
    private Integer maxActive;

    @Value("${spring.redis.jedis.pool.max-idle}")
    private Integer maxIdle;

    @Value("${spring.redis.jedis.pool.min-idle}")
    private Integer minIdle;

    @Value("${spring.redis.jedis.pool.max-wait}")
    private long maxWait;

    @Value("${spring.redis.jedis.pool.enabled}")
    private boolean enabled;

    @Value("${spring.redis.jedis.pool.time-between-eviction-runs}")
    private Integer timeBetweenEvictionRuns;


    @Bean
    public JedisPool redisPoolFactory() {
        JedisPoolConfig jedisPoolConfig = new JedisPoolConfig();
        jedisPoolConfig.setMaxTotal(maxActive);

        jedisPoolConfig.setMaxIdle(maxIdle);
        jedisPoolConfig.setMinIdle(minIdle);
        jedisPoolConfig.setMaxWait(Duration.ofMillis(maxWait));
        jedisPoolConfig.setJmxEnabled(enabled);

        jedisPoolConfig.setTestOnBorrow(false);
        jedisPoolConfig.setTestOnReturn(false);

        // 空闲连接的检测周期
        jedisPoolConfig.setTimeBetweenEvictionRuns(Duration.ofMillis(timeBetweenEvictionRuns));
        // 连接的最小空闲时间，达到此值后空闲连接将被移除
        jedisPoolConfig.setMinEvictableIdleTime(Duration.ofMillis(30000));
        // 做空闲资源检测时，每次的采样数，默认值3，可根据自身应用连接数进行微调,如果设置为-1，就是对所有连接做空闲监测
        jedisPoolConfig.setNumTestsPerEvictionRun(-1);

        JedisPool jedisPool = new JedisPool(jedisPoolConfig, host, port, timeout, password,index);
        return jedisPool;
    }


    private Integer time = new Random().nextInt(60 * 60);

    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {

        RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
        template.setConnectionFactory(factory);
        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);
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        // key采用String的序列化方式
        template.setKeySerializer(stringRedisSerializer);
        // hash的key也采用String的序列化方式
        template.setHashKeySerializer(stringRedisSerializer);
        // value序列化方式采用jackson
        template.setValueSerializer(jackson2JsonRedisSerializer);
        // hash的value序列化方式采用jackson
        template.setHashValueSerializer(jackson2JsonRedisSerializer);

        template.afterPropertiesSet();
        return template;
    }

    @Bean
    RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory) {
        RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        container.setConnectionFactory(connectionFactory);
        return container;
    }

    // 从这往下是配置@cache失效时间
    @Bean
    public RedisCacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) {
        return new RedisCacheManager(
                RedisCacheWriter.nonLockingRedisCacheWriter(redisConnectionFactory),
                this.getRedisCacheConfigurationWithTtl(time), // 默认策略，未配置的 key 会使用这个
                this.getRedisCacheConfigurationMap() // 指定 key 策略
        );
    }
    private Map<String, RedisCacheConfiguration> getRedisCacheConfigurationMap() {
        Map<String, RedisCacheConfiguration> redisCacheConfigurationMap = new HashMap<>();

        // 自定义设置缓存时间
       /* redisCacheConfigurationMap.put("goodsCompCache", this.getRedisCacheConfigurationWithTtl(60 * 60 * 10));
         */



        return redisCacheConfigurationMap;
    }

    private RedisCacheConfiguration getRedisCacheConfigurationWithTtl(Integer seconds) {
        Jackson2JsonRedisSerializer<Object> 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);
        RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig();
        redisCacheConfiguration = redisCacheConfiguration.serializeValuesWith(
                RedisSerializationContext
                        .SerializationPair
                        .fromSerializer(jackson2JsonRedisSerializer)
        ).entryTtl(Duration.ofSeconds(seconds));

        return redisCacheConfiguration;
    }

}