chapter01.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.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; @Configuration // 定义一个配置类 public class RedisConfig { @Bean public RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory) { RedisTemplate 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(); om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY); 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; } @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 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(1)) .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(strSerializer)) .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jacksonSeial)) .disableCachingNullValues(); RedisCacheManager cacheManager = RedisCacheManager.builder(redisConnectionFactory).cacheDefaults(config).build(); return cacheManager; } }