springboot整合redis 重写 redisCacheManager和 reidsTemplate 自定义序列化方式

默认的序列化方式是jdk序列化，我们需要转化为json序列化方式

在springboot1.x版本中，重写缓存管理器

 //缓存管理器
    @Bean
    public CacheManager cacheManager(@SuppressWarnings("rawtypes") RedisTemplate redisTemplate) {
        RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);
        //设置缓存过期时间
        cacheManager.setDefaultExpiration(10000);
        return cacheManager;
    }    //缓存管理器
   

然而在2.0版本中，这个代码直接报错，原因是RedisCacheManager取消了1.0版本中的public RedisCacheManager(RedisOperations redisOperations)的这个构造方法，所以我们无法再用RedisTemplate作为参数来自定义CacheManager。

2.x中应该这样自定义缓存管理器

@Configuration
public class MyRedisConfig {
    @Bean
    public RedisTemplate<Object, Object> empRedisTemplate(RedisConnectionFactory redisConnectionFactory) throws UnknownHostException {
        RedisTemplate<Object, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(redisConnectionFactory);
        Jackson2JsonRedisSerializer<Object> serializer = new Jackson2JsonRedisSerializer<Object>(Object.class);
        template.setDefaultSerializer(serializer);
        return template;
    }

    @Bean
    public CacheManager cacheManager(RedisConnectionFactory factory) {
        RedisCacheConfiguration cacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(Duration.ofDays(1))
                .disableCachingNullValues()
                .serializeKeysWith(RedisSerializationContext.SerializationPair
                .fromSerializer(new StringRedisSerializer()))
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));
        return RedisCacheManager.builder(factory).cacheDefaults(cacheConfiguration).build();
    }
}