报错提示了，jackson 不支持 java8的LocalDateTime 类型，需要引入依赖添加模块jackson-datatype-jsr310。

​编辑 码到成功>_<  ·  2024-04-23 10:47:54 发布

报错：Java 8 date/time type java.time.LocalDateTime not supported by default: add Module “com.fasterxml.jackson.datatype:jackson-datatype-jsr310” to enable handling (through reference chain: com.xxxx[“createTime”])

报错提示了，jackson 不支持 java8的 LocalDateTime 类型，需要引入依赖添加模块jackson-datatype-jsr310

 <dependency>
     <groupId>com.fasterxml.jackson.datatype</groupId>
     <artifactId>jackson-datatype-jsr310</artifactId>
     <version>2.13.0</version>
 </dependency>

设置日期格式化

ObjectMapper objectMapper = new CustomObjectMapper();
objectMapper.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS"));
objectMapper.registerModule(new JavaTimeModule());
Map<String, Object> map = new HashMap<>();
map.put("time", LocalDateTime.now());
map.put("data", LocalDate.now());
objectMapper.writeValueAsString(map);

完整的RedisTemplate配置如下：

package com.cont.ljhyj.consumer.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import lombok.Data;
import org.redisson.Redisson;
import org.redisson.api.RedissonClient;
import org.redisson.config.Config;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Bean;
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.StringRedisSerializer;
import org.springframework.stereotype.Component;

import java.text.SimpleDateFormat;
import java.time.format.DateTimeFormatter;

@Data
@Component
public class RedisConfig {

    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
        RedisTemplate<String, Object> template = new RedisTemplate();
        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);
        om.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS"));
        om.registerModule(new JavaTimeModule());
        jackson2JsonRedisSerializer.setObjectMapper(om);
        //String的序列化
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        //key采用string的序列化
        template.setKeySerializer(stringRedisSerializer);
        //hash的key采用string的序列化
        template.setHashKeySerializer(stringRedisSerializer);
        //value序列化采用jackson
        template.setValueSerializer(jackson2JsonRedisSerializer);
        //hash的value序列化方式采用jackson
        template.setHashValueSerializer(jackson2JsonRedisSerializer);
        template.afterPropertiesSet();
        return template;
    }

}