通过使用spring-data-redis将原始json存储在Redis中

问题描述

我正在使用RedisCacheManager将缓存数据存储在我的spring-boot应用程序中.默认的序列化程序似乎将所有内容序列化为字节，然后从字节反序列化为适当的Java类型.

I am using RedisCacheManager to store my cache data in my spring-boot application. Default serializer seems to serialize everything into byte and deserialize from byte to appropriate java type.

但是，我想将缓存数据存储为json，以便可以从非Java客户端读取它.

However, I want to make the cache data be stored as json so that I can read it from none-java clients.

我发现从默认的序列化器切换到其他的序列化器(如Jackson2JsonRedisSerializer)应该可以正常工作.完成此操作后，反序列化阶段将失败.

I found that switching from default one to other serializers such as Jackson2JsonRedisSerializer supposed to work. After doing this, deserialization phase fails.

pom.xml

    <dependency>
        <groupId>org.springframework.data</groupId>
        <artifactId>spring-data-redis</artifactId>
    </dependency>

    <dependency>
        <groupId>redis.clients</groupId>
        <artifactId>jedis</artifactId>
    </dependency>

CacheConfig.java

CacheConfig.java

@Configuration
@EnableCaching
public class CacheConfig {

    @Bean
    public RedisConnectionFactory createRedisConnectionFactory() {
        JedisConnectionFactory factory = new JedisConnectionFactory();
        factory.setHostName("localhost");
        return factory;
    }

//    SPRING-DATA-REDIS ALREADY PROVIDES A STRING REDIS TEMPLATE, SO THE FOLLOWING IS NOT NECESSARY
//    @Bean
//    public RedisTemplate<String, String> createRedisTemplate(RedisConnectionFactory factory) {
//        RedisTemplate<String, String> redisTemplate = new RedisTemplate<>();
//        redisTemplate.setConnectionFactory(factory);
//        return redisTemplate;
//    }

    @Bean
    public CacheManager redisCacheManager(RedisTemplate redisTemplate) {
        RedisCacheManager cacheManager = new RedisCacheManager(redisTemplate);
        return cacheManager;
    }
}

有没有一种方法可以将它们存储为纯JSON格式并从中成功反序列化?

Is there a way to store them in a pure JSON format and successfully deserialize from it?

推荐答案

将此添加到您的配置中以在redis模板中显式设置杰克逊序列化器.

add this in your configuration to explicitly set the jackson serializer in redis template.

public @Bean RedisTemplate<Object, Object> redisTemplate(RedisConnectionFactory connectionFactory) {

    RedisTemplate<Object, Object> template = new RedisTemplate<>();
    template.setConnectionFactory(connectionFactory);
    template.setDefaultSerializer(new GenericJackson2JsonRedisSerializer());
    template.setKeySerializer(new StringRedisSerializer());
    template.setHashKeySerializer(new GenericJackson2JsonRedisSerializer());
    template.setValueSerializer(new GenericJackson2JsonRedisSerializer());
    return template;
}

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