redis作为缓存时，value乱码问题解决

最新推荐文章于 2024-10-24 08:32:23 发布

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#java #springboot #redis #cache

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本文介绍如何通过自定义RedisTemplate和CacheManager中的序列化方式来解决Redis缓存中Value出现乱码的问题，采用JSON格式序列化并提供具体代码实现。

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redis作为缓存时，value乱码问题解决

需要自定义redistemplate和cachemanager中的value的序列化方式；

package com.zr.aop.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.zr.aop.pojo.User;
import org.springframework.cache.CacheManager;
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.*;

import java.time.Duration;

@Configuration
public class RedisConfig {

@Bean
public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory)
{
    RedisTemplate<String,Object> template = new RedisTemplate<String,Object>();
    template.setConnectionFactory(redisConnectionFactory);
    //使用JSON格式的序列化,保存
   template.setKeySerializer(new StringRedisSerializer());
   template.setHashKeySerializer(new StringRedisSerializer());
   template.setValueSerializer(new GenericJackson2JsonRedisSerializer());
   template.setHashValueSerializer(new GenericJackson2JsonRedisSerializer());
    return template;
}

//自定义cacheManager缓存管理器
@Bean
public CacheManager cacheManager(RedisConnectionFactory factory)
{
    RedisSerializer<String> redisSerializer = new StringRedisSerializer();
    Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = 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);
    jackson2JsonRedisSerializer.setObjectMapper(om);

    //配置序列化(解决乱码的问题)
    RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig()
            .entryTtl(Duration.ZERO)
            .serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
            .serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
            .disableCachingNullValues();

    RedisCacheManager cacheManager = RedisCacheManager.builder(factory)
            .cacheDefaults(config)
            .build();
    return cacheManager;
}

}