4.编写springBoot的application.yml配置文件 4. 测试(StringRedisTemplate是RedisTemplate的一个子类,操作的键和值都是字符串类型。如果要操作对象,就需要使用RedisTemplate,操作RedisTemplate存值和取值时,都会对键和值进行序列化(默认方式JdkSerializationRedisSerializer),也就是说要存对象的话,对象就得实现序列化接口Serializable) 5.RedisTemplate存储对象
6.由于RedisTemplate操作时会将key和value都进行序列化,key的序列化也许会带来不便,以下配置可修改key的默认序列化为字符串序列化(StringRedisSerializer),即存的key是什么,redis中就放对应的key字符串。 6.SpringBoot前后端交互一般都是Json形式。我们可以自己配置RedisTemplate的bean,开启缓存,且将值序列化方式设为Json。
@EnableCaching//开启缓存 @Configuration public class RedisConfig { @Bean public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) { //RedisTemplate对象 RedisTemplate<String, Object> template = new RedisTemplate<>(); //字符串序列化 RedisSerializer<String> stringRedisSerializer = new StringRedisSerializer(); //json序列化 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); //设置key序列化方式为字符串 template.setKeySerializer(stringRedisSerializer); //设置value序列化方式为json template.setValueSerializer(jackson2JsonRedisSerializer); //设置hash的key序列化方式为字符串 template.setHashKeySerializer(stringRedisSerializer); //设置hash的value序列化方式为json 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),缓存过期时间600秒 RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig() .entryTtl(Duration.ofSeconds(600)) .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer)) .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer)) .disableCachingNullValues(); RedisCacheManager cacheManager = RedisCacheManager.builder(factory) .cacheDefaults(config) .build(); return cacheManager; } }