修改redis缓存序列化方式为json格式

Author: 曾梓健

springboot_cache/src/main/java/com/hand/springboot_cache/RedisConfig.java

@@ -0,0 +1,48 @@
+package com.hand.springboot_cache;
+
+import java.time.Duration;
+
+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.serializer.Jackson2JsonRedisSerializer;
+import org.springframework.data.redis.serializer.RedisSerializationContext;
+import org.springframework.data.redis.serializer.RedisSerializer;
+import org.springframework.data.redis.serializer.StringRedisSerializer;
+
+/**
+ * @author zijian.zeng@hand-china.com
+ * @since 2023-02-04
+ */
+@Configuration
+public class RedisConfig {
+	@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 jacksonSerial = 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);
+		jacksonSerial.setObjectMapper(om);
+
+		// 定制缓存数据序列化方式及时效
+		RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
+				.entryTtl(Duration.ofDays(1)) // 缓存数据的有效期 1天
+				.serializeKeysWith(RedisSerializationContext.SerializationPair
+						.fromSerializer(strSerializer))  //key为String
+				.serializeValuesWith(RedisSerializationContext.SerializationPair
+						.fromSerializer(jacksonSerial))  //value为json
+				.disableCachingNullValues();
+
+		return RedisCacheManager.builder(redisConnectionFactory).cacheDefaults(config).build();
+	}
+}
+