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# spring

[Slackbot]

This message was deleted.

[rajesh]

https://stackoverflow.com/questions/66917521/spring-boot-redis-sets-the-object-as-empty-json

[jbnizet]

Your properties are private, so Jackson doesn’t serialize them I guess. They should be public.

[thanksforallthefish]

the annotation is also wrong, you need @field:JsonProperty or @get:JsonProperty. though in your case it will not make a difference, since the property name you chose is the same of the field name

[rajesh]

@jbnizet that worked. it store data as json "`{\"postId\":10000020,\"userId\":10000001}"` but when trying to access data, it throws at [Source: (byte[])"{"postId":10000020,"userId":10000001}"; line: 1, column: 37]; nested exception is com.fasterxml.jackson.databind.exc.InvalidTypeIdException: Missing type id when trying to resolve subtype of [simple type, class java.lang.Object]: missing type id property '@class'

[rajesh]

It worked by adding

@JsonTypeInfo(use = JsonTypeInfo.Id.CLASS)

to class TimelinePost