i have a simple question, let’s say I have this json Mapped this way: I was wondering if it was possible to just save an outer field in the inner object like this by using some custom setter/annotation or something: PS: using a custom deserialization is my last resort due to the complexity of the json A…
Tag: json-deserialization
Custom jackson deserializer only for nested class
I have a vehicle Java class defined like this: TimeWindow is defined like this: Now, the JSON I am getting, does not define latitude and longitude for the location (start and end); this information is encoded as just an array, see e.g.: How can I write a custom deserializer for just Location (same problem wit…
Is there a better way to Optimize code that takes one value out of a Request body, the data comes in, in json format
I have an request object, that contains a huge amount of data. But there is a filter in my code, where I need to take out just one element. At the moment I am Deserializing the whole object, which seems overkill to just get one element This is part of a zuul filter It seems over kill to deserialize an
Null Values are assigned as values for a list in POJO SpringBoot/Java
I have a POJO that will be reading the data from a Kafka Consumer. I have a couple of list objects inside it and I am not able to understand the Null behavior of it EmployeeEBO.java AssignedWorkEBO.java So I am trying to Check whether the data from kafka is Empty/Null condition for the AssignedWorkEBO and it …
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…
How to restrict jackson from parsing millis to LocalDate in json request
I need to validate LocalDate fields in json requests. What i want is to prevent deserializing numbers as miilis to LocalDate. Here is example: I have an entity: Jackson2ObjectMapperBuilder config: Now if i’m receiveing: the result is birthDate=1970-01-02 I’m able to do so by setting leniency to fa…
Jackson deserialization: Can I inject a value with an annotation on the field of the to deserializable object?
I have an object like this to deserialize: whereas the class Relation looks like this: RelationType is en enum and is not a value which will be deserialized, while all others are. Is it possible, that I could “inject” the enum value for the field relationType with an annotation on the field in the…
How to deserialise anonymous array of mixed types with Jackson
In my Java program, I am trying to parse data that I get from Strava.com’s API. One of the JSON payloads, I receive from there looks as follows: Basically, four of these entries (altitude, velocity_smooth, distance and time) have the same structure (their data field is an array of doubles (or ints that …
Can I apply a custom deserializer to within another custom deserializer for GSON
The below is a working code that helps to convert JSON in Object accordingly. If the String is nil, it will be treated as null. There’s 2 custom deserializer i.e. MyOwnStringDeserializer and MyOwnListDeserializer. I am not happy with MyOwnListDeserializer deserializer, as essentially what it is doing is…
deserialization of a json array to a list and retaining the array order from json within list
I have the following json that is mapped to a POJO using Jackson mapper. How do I retain the order of array columns from json during deserialization ? What annotation should I use ? JSON: } POJO: } Expected getColumnNames(): {“FirstName”,”LastName”,”UserName”} Actual getCol…