No Creators, like default construct, exist): cannot deserialize from Object value (no delegate- or property-based Creator

by

Reason: This error occurs because jackson library doesn’t know how to create your model which doesn’t have an empty constructor and the model contains constructor with parameters which didn’t annotated its parameters with @JsonProperty("field_name"). By default java compiler creates empty constructor if you didn’t add constructor to your class.

Solution:
Add an empty constructor to your model or annotate constructor parameters with @JsonProperty("field_name")

If you use a Kotlin data class then also can annotate with @JsonProperty("field_name") or register jackson module kotlin to ObjectMapper.

You can create your models using http://www.jsonschema2pojo.org/.

More Related Contents:

  1. Android Kotlin: Getting a FileNotFoundException with filename chosen from file picker?
  2. POST Multipart Form Data using Retrofit 2.0 including image
  3. Singleton object becomes null after app is resumed
  4. Retrofit 2: Get JSON from Response body
  5. Why do I get “unresolved reference” error for my view’s name/ID when I type it in Kotlin?
  6. Notify Observer when item is added to List of LiveData
  7. Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.5.1, expected version is 1.1.15
  8. Why the view keeps flashing when using jetpack navigation with Compose?
  9. Singleton with parameter in Kotlin
  10. Error : Program type already present: android.support.design.widget.CoordinatorLayout$Behavior
  11. Convert string into LocalDateTime
  12. android kotlin java.io.FileNotFoundException: /storage/emulated/0/number.txt: open failed: EACCES (Permission denied)
  13. Existing 3-function callback to Kotlin Coroutines
  14. Pass Parcelable argument with compose navigation
  15. Error:Execution failed for task ‘:app:kaptDebugKotlin’
  16. How can I return String or JSONObject from asynchronous callback using Retrofit?
  17. App crash after activity has been killed in background
  18. How can I represent a “many to many” relation with Android Room when column names are same?
  19. Cannot find symbol DataBindingComponent on Android Studio 3.2 Canary 16 Kotlin project
  20. Kotiln: pass data from adapter to activity
  21. Different types of width in jetpack compose
  22. push notification enable and disable by using switch
  23. Kotlin Android View Binding: findViewById vs Butterknife vs Kotlin Android Extension
  24. Close/hide the Android Soft Keyboard with Kotlin
  25. How I can retrieve current fragment in NavHostFragment?
  26. Kotlin Coroutines the right way in Android
  27. Cannot deserialize instance of object out of START_ARRAY token in Spring 3 REST Webservice
  28. Sending JSON in POST request with Retrofit2
  29. FragmentTransaction hide/show doesn’t work sometimes
  30. kotlin-stdlib-jre7 is deprecated. Please use kotlin-stdlib-jdk7 instead

Leave a Comment