redis反序列化异常

异常信息

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Caused by: com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of `com.hwang.module.auth.entity.LoginUser` (no Creators, like default constructor, exist): cannot deserialize from Object value (no delegate- or property-based Creator)
 at [Source: (byte[])"["com.hwang.module.auth.entity.LoginUser",{"account":["com.hwang.module.system.entity.Account",{"id":1537726623534571521,"createTime":["java.util.Date",1673256893000],"userId":1537726623526182914,"authAccount":"15622632596","updateTime":["java.util.Date",1676368143000]}],"user":["com.hwang.module.system.entity.User",{"id":1537726623526182914,"createTime":["java.util.Date",1673257832000],"userNum":"003233","username":"huang.xiaosi","gender":"UK","updateTime":["java.util.Date",1676369633000]}],"au"[truncated 305 bytes]; line: 1, column: 44]
	at com.fasterxml.jackson.databind.exc.InvalidDefinitionException.from(InvalidDefinitionException.java:67) ~[jackson-databind-2.13.1.jar:2.13.1]
	at com.fasterxml.jackson.databind.DeserializationContext.reportBadDefinition(DeserializationContext.java:1904) ~[jackson-databind-2.13.1.jar:2.13.1]
	at com.fasterxml.jackson.databind.DatabindContext.reportBadDefinition(DatabindContext.java:400) ~[jackson-databind-2.13.1.jar:2.13.1]
	at com.fasterxml.jackson.databind.DeserializationContext.handleMissingInstantiator(DeserializationContext.java:1349) ~[jackson-databind-2.13.1.jar:2.13.1]
	at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1415) ~[jackson-databind-2.13.1.jar:2.13.1]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:351) ~[jackson-databind-2.13.1.jar:2.13.1]
	at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:184) ~[jackson-databind-2.13.1.jar:2.13.1]
	at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer._deserialize(AsArrayTypeDeserializer.java:120) ~[jackson-databind-2.13.1.jar:2.13.1]
	at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer.deserializeTypedFromAny(AsArrayTypeDeserializer.java:71) ~[jackson-databind-2.13.1.jar:2.13.1]
	at com.fasterxml.jackson.databind.deser.std.UntypedObjectDeserializer$Vanilla.deserializeWithType(UntypedObjectDeserializer.java:765) ~[jackson-databind-2.13.1.jar:2.13.1]
	at com.fasterxml.jackson.databind.deser.impl.TypeWrappedDeserializer.deserialize(TypeWrappedDeserializer.java:74) ~[jackson-databind-2.13.1.jar:2.13.1]
	at com.fasterxml.jackson.databind.deser.DefaultDeserializationContext.readRootValue(DefaultDeserializationContext.java:322) ~[jackson-databind-2.13.1.jar:2.13.1]
	at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4674) ~[jackson-databind-2.13.1.jar:2.13.1]
	at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3731) ~[jackson-databind-2.13.1.jar:2.13.1]
	at org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer.deserialize(Jackson2JsonRedisSerializer.java:73) ~[spring-data-redis-2.6.0.jar:2.6.0]
	... 99 common frames omitted

解决方法

Cannot construct instance of错误信息是实体类无无参构造函数，在实体类新增该函数即可