Currently, I have a JSON response of the following type. I want to map my custom class to nested user attributes. But when I am trying to get the attribute, it is always sending null value. I think it is maping to first occurance of “user” in line no 2. How can I map it to correct user attribute i…
Tag: jackson-databind
@JsonIdentityInfo serialization of items
I’m trying to serialize relations using @JsonItentityInfo to avoid circular references. I’ve created a test to try test the result of the serialization, and I’ve found that jackson is not behaving as I expected. The serialization in not what I though it would be and, in fact, when I try to d…
How to merge two jsonNodes in one
I have two variables of class User as follows: I want to create a JsonNode with the following structure: I have converted the objects to nodes, but I do not know how to merge them using Jackson. Or is there a more efficient way to create one json node structure with the two classes ? I am using Kotlin and
Swap Jackson custom serializer / deserializer during runtime
I have the following system: I am sending MediaType.APPLICATION_JSON_VALUEs from spring controllers to my client and vice versa. I also have an export/import feature of my to-be-serialized classes. The JSON File is created by using an ObjectMapper and utilizing the writeValueAsString and readValue methods. I …
Jackson deserialization using JsonParser distinguish between the direct object and objects within array
I am using the Jackson for the Deseilization of the JSON. The Deseilization works perfectly for a JSON with CustomerDocument. However, I have a new requirement in which I need to find whether provided JSON has CustomerDocument or just Customer. I am able to develop the logic for both but the problem is that w…
JSON data mapping in Java with Jackson
I got stuck in mapping a json into my data structures “the easy way” using just Jackson decorators and I was wondering if there is a way to do this … The json that I try to read has the following structure: So basically every data entity has a “data_info” object (mapped in my cod…
How do I globally enable “strict” handling of LocalDate values using Jackson?
Jackson Java 8 Date/time module issue jackson-modules-java8#212 mentions enabling “strict” handling via a global default: Currently LocalDateDeserializer automatically accepts non-standard format where time part also exists. While this is useful for some use cases, compatibility, it seems reasonab…
Deserializing JSON in Java using Jackson
I have the following sample fragment of JSON I am trying to deserialize. { “total”: 2236, “issues”: [{ “id”: “10142”, “key”: &…
Why Jackson ObjectMapper give me this error converting JSON field into a Date object? Can not deserialize value of type java.util.Date from String
I have this JSON object: that have to be mappend on this DTO class: To do this mapping I am using Jackson ObjectMapper, in this way: When I try to map the JSON dateTime field with the Date dateTime in my DTO class I am obtaining the following exception message: As you can see the value of the dateTime field
Jackson ObjectMapper returns null when Object variable is set to Private
I am given this escaped JSON and I need to convert it to Java object using Jackson. I created the class: Then I created the method to convert it Whichever variables in Data class that are set to public, then I will get the corresponding value when I call getters. Whichever variables in Data class that are set…