CODEWITHSUNDEEP
javaserializationjacksondeserializationobjectmapper
usman
usman

Reputation: 1391

How to use different JSONProperty on Serialize & Deserialize using Jackson API?

I had a Java object "Author" which was then restructured to become an Ararylist of "Author". Author object was saved in DB directly as JSON below:

{"author":{"id":1,"recordId":0}}

So my earlier Java Field was :

private Author author = new Author();

and new is :

private List<Author> authorList;

Problem is how i can write my code to have Serialized object with authorList but need to deserialize old "Author" as well.

I used @JsonProperty to read already saved author data but this also saves Arraylist named "Author" which i need to name as authorList

@JsonProperty(value="author")
@JsonDeserialize(using = AuthorDeserializer.class)

Upvotes: 3

Views: 3896

Answers (3)

Selindek
Selindek

Reputation: 3423

You can also add this feature to your objectMapper:

DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY

Upvotes: 1

usman
usman

Reputation: 1391

Googling around i have found solution for it. We can use @JsonAlias using latest Jackson API (2.9.7) So in my case i wanted this alias for deserialization @JsonAlias(value={"author","authorList"}).

JSON Jackson parse different keys into same field

Upvotes: 2

df778899
df778899

Reputation: 10931

If you only need to deserialize with the "author" property, the simplest way is just to give it the setter method it will be looking for.

For example:

@JsonProperty("author")
public void setAuthor(Author author) {
    setAuthorList(new ArrayList<>(Collections.singletonList(author)));
}

Upvotes: 0

Related Questions