SpringBoot2.X + SpringCache + redis解决乱码问题

环境：SpringBoot2.X + SpringCache + Redis

• Spring boot默认使用的是SimpleCacheConfiguration，使用ConcurrentMapCacheManager来实现缓存。

配置：

spring:
  redis:
      host: 192.168.1.192
      database: 1
      port: 6379
      password: 123456
      timeout: 1s
      jedis:
        pool:
          max-active: 20
          max-idle: 20
          min-idle: 10
          max-wait: -1ms
  cache:
    redis:
      use-key-prefix: true
      key-prefix: dev
      cache-null-values: false
      time-to-live: 20s

解决redis保存数据乱码的问题

• 解决从redis反序列化报错的问题

• 增加失效时间

@Configuration
@ConfigurationProperties(prefix = "spring.cache.redis")
public class SpringCacheRedisConfig {
    private Duration timeToLive = Duration.ZERO;
    public void setTimeToLive(Duration timeToLive) {
        this.timeToLive = timeToLive;
    }

    @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）
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(timeToLive)
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
                .disableCachingNullValues();

        RedisCacheManager cacheManager = RedisCacheManager.builder(factory)
                .cacheDefaults(config)
                .build();
        return cacheManager;
    }
}