springboot @Cacheable注解序列化失败而RedisUtil正常问题配置Cacheable序列化方式

问题描述@Cacheable注解序列化失败而RedisUtil正常, 错误信息如下：org.springframework.data.redis.serializer.SerializationException: Cannot serialize; nested exception is org.springframework.core.serializer.support.Serializa

· Coisini

3018人浏览 · 2021-03-23 17:55:42

· Coisini · 2021-03-23 17:55:42 发布

问题描述

@Cacheable注解序列化失败而RedisUtil正常, 错误信息如下：

org.springframework.data.redis.serializer.SerializationException: Cannot serialize; nested exception is org.springframework.core.serializer.support.SerializationFailedException: Failed to serialize object using DefaultSerializer; nested exception is java.io.NotSerializableException: xxx.xxx.xxx.entity$ExternalAttribute
	at org.springframework.data.redis.serializer.JdkSerializationRedisSerializer.serialize(JdkSerializationRedisSerializer.java:96)
	at org.springframework.data.redis.serializer.DefaultRedisElementWriter.write(DefaultRedisElementWriter.java:44)
	at org.springframework.data.redis.serializer.RedisSerializationContext$SerializationPair.write(RedisSerializationContext.java:287)
	at org.springframework.data.redis.cache.RedisCache.serializeCacheValue(RedisCache.java:264)
	at org.springframework.data.redis.cache.RedisCache.put(RedisCache.java:150)
---------
Caused by: java.io.NotSerializableException: xxx.xxx.xxx.entity$ExternalAttribute

处理方法，修改Cacheable序列化方式，默认为JdkSerializationRedisSerializer，改为Redis配置的序列化方式，常用Jackson2JsonRedisSerializer

Redis配置类继承CachingConfigurerSupport 配置redisCacheManager

RedisConfig配置如下：

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.context.annotation.Primary;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.cache.RedisCacheWriter;
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.StringRedisSerializer;

/**
 * Redis配置类
 */
@Configuration
public class RedisConfig extends CachingConfigurerSupport {

    /**
     * 自定义配置 RedisTemplate
     * @Primary注解 默认加载此配置 忽略 RedisAutoConfiguration 的 stringRedisTemplate 配置
     * @param factory
     * @return
     */
    @Bean
    @Primary
    @SuppressWarnings("all")
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
        // 我们为了自己开发方便，一般直接使用 <String, Object>
        RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
        template.setConnectionFactory(factory);
        // Json序列化配置
        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);
        // String 的序列化
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        // key采用String的序列化方式
        template.setKeySerializer(stringRedisSerializer);
        // hash的key也采用String的序列化方式
        template.setHashKeySerializer(stringRedisSerializer);
        // value序列化方式采用jackson
        template.setValueSerializer(jackson2JsonRedisSerializer);
        // hash的value序列化方式采用jackson
        template.setHashValueSerializer(jackson2JsonRedisSerializer);
        template.afterPropertiesSet();
        return template;
    }

    /**
     * 修改 Cacheable 默认序列化方式 使用Redis配置的序列化
     * 解决 @Cacheable 序列化失败 而 RedisUtil可以成功 问题
     * @param redisTemplate RedisTemplate
     * @return RedisCacheManager
     */
    @Bean
    public RedisCacheManager redisCacheManager(RedisTemplate redisTemplate) {
        RedisCacheWriter redisCacheWriter = RedisCacheWriter.nonLockingRedisCacheWriter(redisTemplate.getConnectionFactory());
        RedisCacheConfiguration redisCacheConfiguration = RedisCacheConfiguration.defaultCacheConfig()
            .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(redisTemplate.getValueSerializer()));
            // 默认过期时间
        redisCacheConfiguration.entryTtl(Duration.ofDays( 30));
        return new RedisCacheManager(redisCacheWriter, redisCacheConfiguration);
      }
}