springboot3 CachingConfigurer如何配置

在Spring Boot 3中，可以使用CachingConfigurer来配置缓存的相关属性。以下是配置缓存的步骤：

1. 添加Spring Boot缓存依赖

在pom.xml文件中添加以下依赖：

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

2. 配置缓存

在Spring Boot的配置文件中，配置缓存相关属性：

spring.cache.type=redis # 设置缓存类型为Redis
spring.redis.host=localhost # 设置Redis的主机地址
spring.redis.port=6379 # 设置Redis的端口号

3. 实现CachingConfigurer接口

在实现类上添加@EnableCaching注解，并实现CachingConfigurer接口：

@Configuration
@EnableCaching
public class CacheConfig implements CachingConfigurer {

    @Bean
    public RedisCacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) {
        RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()
                .entryTtl(Duration.ofSeconds(60)) // 设置缓存时间为60秒
                .disableCachingNullValues() // 禁止缓存null值
                .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer())) // 设置key序列化方式为String
                .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer())); // 设置value序列化方式为Json

        return RedisCacheManager.builder(redisConnectionFactory)
                .cacheDefaults(redisCacheConfiguration)
                .build();
    }

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

        redisTemplate.setKeySerializer(new StringRedisSerializer());
        redisTemplate.setValueSerializer(new GenericJackson2JsonRedisSerializer());

        return redisTemplate;
    }

    @Override
    public CacheManager cacheManager() {
        return cacheManager(redisConnectionFactory());
    }

    @Override
    public KeyGenerator keyGenerator() {
        return new SimpleKeyGenerator();
    }

    @Override
    public CacheResolver cacheResolver() {
        return new SimpleCacheResolver(cacheManager());
    }

    @Override
    public CacheErrorHandler errorHandler() {
        return new SimpleCacheErrorHandler();
    }

    @Bean
    public RedisConnectionFactory redisConnectionFactory() {
        return new JedisConnectionFactory();
    }
}

这样就完成了Spring Boot 3中缓存的配置。在代码中使用缓存时，可以使用Spring提供的@Cacheable、@CachePut、@CacheEvict等注解实现对缓存的操作。