Jackson not ignoring null objects in json array

Question

Im using the JacksonConverterFactory from Retrofit2 to convert my json from the server to objects. But because im unsing realm the RealmList objects shouldn´t be null. I have tried to .getSerializationConfig().withSerializationInclusion(JsonInclude.Include.NON_NULL); but it looks like he still tries to add null values to the RealmList.

ObjectMapper mapper = new ObjectMapper();     mapper.getSerializationConfig().withSerializationInclusion(JsonInclude.Include.NON_EMPTY);
mapper.disable(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
...
.addConverterFactory(JacksonConverterFactory.create(mapper)

the json looks like this

"items": [
    {
      "id": 8941,
      "size": 4
      "childs": [
        null,
        {
          "id": 32134,
          "count": 1
        },
        null,
        null
      ]
    },
    null,
    {
      "id": 8932,
      "size": 20
      "childs": [
        null,
        null,
        ...
      ]
    },
    {
      "id": 48715,
      "size": 20
    },
    null
  ]

The logcat:

Caused by: com.fasterxml.jackson.databind.JsonMappingException: RealmList does not accept null values (through reference chain: java.util.ArrayList[11]->my.package.myobject["items"]->io.realm.RealmList[4])

score 2 · Accepted Answer · answered Feb 01 '16 at 14:50

2

In the snippet you've provided JsonInclude.Include.NON_EMPTY is used. Did you really try JsonInclude.Include.NON_NULL ?

answered Feb 01 '16 at 14:50

Oleh Novikov

558
5
17

I also tried gson, but for gson he is doing the same – Fabian Feb 01 '16 at 15:32
Im using RealmList – Fabian Feb 01 '16 at 15:52
i could aslo override the RealmList and remove the exception – Fabian Feb 01 '16 at 15:56

Jackson not ignoring null objects in json array

1 Answers1