org.springframework.data.redis.serializer.SerializationException: Could not read JSON: Can not construct instance of 
java.time.LocalDateTime: no suitable constructor found, can not deserialize from Object value (missing default
 constructor or creator, or perhaps need to add/enable type information?) at [Source: [
 
[email protected]; line: 1, column: 84] 
(through reference chain:code.ValidateCode["expireTime"]); nested exception 
is com.fasterxml.jackson.databind.JsonMappingException: Can not construct instance of java.time.LocalDateTime: 
no suitable constructor found, can not deserialize from Object value (missing default constructor or 
creator, or perhaps need to add/enable type information?)at [Source: [
 
[email protected]; line: 1, column: 84] (through reference 

在redis序列化的時候使用LocalDateTime是會出現上述錯誤，解決方法：
LocalDateTime屬性加上註解 
 

import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateTimeDeserializer;
import com.fasterxml.jackson.datatype.jsr310.ser.LocalDateTimeSerializer;


public class Demo {
	
	@JsonDeserialize(using = LocalDateTimeDeserializer.class)
	@JsonSerialize(using = LocalDateTimeSerializer.class)
	private LocalDateTime expireTime;
}
 

這樣就可以解決問題了。