[开发工具]Redis中LocalDateTime的序列化问题、缓存在增删改查中的处理逻辑

1、LocalDateTime的序列化

Redis的jackson不支持LocalDateTime时间类

Request processing failed; nested exception is 
org.springframework.data.redis.serializer.SerializationException: Could not write JSON: 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.my.seckill.dao.pojo.GoodsVo["startDate"]); nested exception is 
com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Java 8 date/time type 
`java.time.LocalDateTime` not supported

解决方案：

1）添加依赖

<!-- jackson-datatype-jsr310 -->
<dependency>
    <groupId>com.fasterxml.jackson.datatype</groupId>
    <artifactId>jackson-datatype-jsr310</artifactId>
    <version>2.13.2</version>
</dependency>

2）添加注解

// 在实体类中的LocalDateTime字段添加
@JsonDeserialize(using = LocalDateTimeDeserializer.class) // 反序列化
@JsonSerialize(using = LocalDateTimeSerializer.class) // 序列化
private LocalDateTime gmtCreate;

2、缓存在增删改查中的处理逻辑

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