第十章资源文件.zip

package com.itheima.config; import com.fasterxml.jackson.annotation.JsonAutoDetect; import com.fasterxml.jackson.annotation.PropertyAccessor; import com.fasterxml.jackson.databind.ObjectMapper; import org.springframework.cache.annotation.CachingConfigurerSupport; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.data.redis.cache.RedisCacheConfiguration; import org.springframework.data.redis.cache.RedisCacheManager; import org.springframework.data.redis.connection.RedisConnectionFactory; import org.springframework.data.redis.core.RedisTemplate; import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer; import org.springframework.data.redis.serializer.RedisSerializationContext; import org.springframework.data.redis.serializer.RedisSerializer; import org.springframework.data.redis.serializer.StringRedisSerializer; import java.time.Duration; /** * 自定义Redis配置类，进行序列化以及RedisTemplate设置 */ @Configuration public class RedisConfig extends CachingConfigurerSupport { /** * 定制Redis API模板RedisTemplate * @param redisConnectionFactory * @return */ @Bean public RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) { RedisTemplate<Object, Object> template = new RedisTemplate(); template.setConnectionFactory(redisConnectionFactory); // 使用JSON格式序列化对象，对缓存数据key和value进行转换 Jackson2JsonRedisSerializer jacksonSeial = new Jackson2JsonRedisSerializer(Object.class); // 解决查询缓存转换异常的问题 ObjectMapper om = new ObjectMapper(); // 指定要序列化的域，field,get和set,以及修饰符范围，ANY是都有包括private和public om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY); // 指定序列化输入的类型，类必须是非final修饰的，final修饰的类，比如String,Integer等会跑出异常 om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL); jacksonSeial.setObjectMapper(om); // 设置RedisTemplate模板API的序列化方式为JSON template.setDefaultSerializer(jacksonSeial); return template; } /** * 定制Redis缓存管理器RedisCacheManager，实现自定义序列化并设置缓存时效 * @param redisConnectionFactory * @return */ @Bean public RedisCacheManager cacheManager(RedisConnectionFactory redisConnectionFactory) { // 分别创建String和JSON格式序列化对象，对缓存数据key和value进行转换 RedisSerializer<String> strSerializer = new StringRedisSerializer(); Jackson2JsonRedisSerializer jacksonSeial = 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); jacksonSeial.setObjectMapper(om); // 定制缓存数据序列化方式及时效 RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig() .entryTtl(Duration.ofDays(7)) // 设置缓存有效期为1天 .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(strSerializer)) .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jacksonSeial)) .disableCachingNullValues(); // 对空数据不进行缓存 RedisCacheManager cacheManager = RedisCacheManager.builder(redisConnectionFactory).cacheDefaults(config).build(); return cacheManager; } }