问题描述

RedisTemplate可以写入数据,但读取不到数据,类似:

// 写
redisTemplate.boundHashOps(key).putAll(dataMap);
// 读
redisTemplate.hasKey(key)=false

原因预测

1. 序列化
   不设置RedisConfig里的RedisSerializer,会使用默认序列化导致写入数据不符合原数据格式,导致查询失败
2. 泛型(尝试)

   RedisTemplate<Object, Object>// 查询不到key
   RedisTemplate<String, Object>// 查询到key
   

RedisConfig模板

key用StringRedisSerializer
value用Jackson2JsonRedisSerializer
pom导入jjwt依赖

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.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

@Configuration
public class RedisConfig {

	/****
     * 序列化设置
     */
    @Bean("redisTemplate")
    public RedisTemplate getRedisTemplate(RedisConnectionFactory redissonConnectionFactory) {
        RedisTemplate<String, Object> redisTemplate = new RedisTemplate();
        redisTemplate.setConnectionFactory(redissonConnectionFactory);
        redisTemplate.setValueSerializer(valueSerializer());
        redisTemplate.setKeySerializer(keySerializer());
        redisTemplate.setHashKeySerializer(keySerializer());
        redisTemplate.setHashValueSerializer(valueSerializer());
        return redisTemplate;
    }

    @Bean
    public StringRedisSerializer keySerializer() {
        return new StringRedisSerializer();
    }

    @Bean
    public RedisSerializer valueSerializer() {
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper objectMapper = new ObjectMapper();
        objectMapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        objectMapper.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(objectMapper);
        return jackson2JsonRedisSerializer;
    }
}