SpringBoot 2.x之使用Redis

网上大多数资料都是基于SpringBoot 1.x版本的，找了很多资料才适合基于2.x版本SpringBoot的redis整合。

依赖：

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

application.yml

spring:
  cache:
    redis:
      use-key-prefix: true
      time-to-live: 1d
  redis:
    port: 6379
    host: ip
    password: password
    database: 0
    timeout: 10s
    jedis:
      pool:
        max-active: 8
        max-idle: 50
        min-idle: 0
        max-wait: -1ms

自定义配置类：

@Configuration
@EnableCaching
@ConfigurationProperties(prefix = "spring.cache.redis")
public class RedisConfig {

    private Duration timeToLive = Duration.ZERO;

    public void setTimeToLive(Duration timeToLive) {
        this.timeToLive = timeToLive;
    }

    @Bean
    @Primary    // 设置默认的cacheManager
    public RedisCacheManager cacheManager(RedisConnectionFactory connectionFactory) {
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(this.timeToLive)
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(keySerializer()))
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(valueSerializer()))
                .disableCachingNullValues();

        RedisCacheManager redisCacheManager = RedisCacheManager.builder(connectionFactory)
                .cacheDefaults(config)
                .transactionAware()
                .build();

        return redisCacheManager;
    }

    // 注意：我们配置不同的cacheManager，这样就可以使用不同类型的Serializer
    @Bean
    public RedisCacheManager imageCacheManager(RedisConnectionFactory connectionFactory) {
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(this.timeToLive)
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(keySerializer()))
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new Jackson2JsonRedisSerializer<Image>(Image.class)))
                .disableCachingNullValues();

        RedisCacheManager redisCacheManager = RedisCacheManager.builder(connectionFactory)
                .cacheDefaults(config)
                .transactionAware()
                .build();

        return redisCacheManager;
    }

    @Bean(name = "redisTemplate")
    public RedisTemplate<String,Object> redisTemplate(RedisConnectionFactory redisConnectionFactory){
        RedisTemplate<String,Object> redisTemplate = new RedisTemplate<>();
        redisTemplate.setConnectionFactory(redisConnectionFactory);

        redisTemplate.setKeySerializer(keySerializer());
        redisTemplate.setHashKeySerializer(keySerializer());
        redisTemplate.setValueSerializer(valueSerializer());
        redisTemplate.setHashValueSerializer(valueSerializer());

        return redisTemplate;
    }

    private RedisSerializer<String> keySerializer() {
        return new StringRedisSerializer();
    }

    private RedisSerializer<Object> valueSerializer() {
        return new GenericJackson2JsonRedisSerializer();
    }

}

使用：

• 1、注解
• 2、编码

注意：

使用不同cacheManager中Serializer的结果：

这里只是使用了基础的cacheManager，其中的解析器为GenericJackson2JsonRedisSerializer()

而这使用了相应的imageCacheManager，其中的解析器为Jackson2JsonRedisSerializer<Image>(Image.class)