JSON to POJO conversion using Jackson & JsonPath - json

Question

I have a data scenario, where I want to populate an attribute in my POJO class using the attribute of a nested object. The below is just an example, but I have many such nested variables.
For example my java class is as follow
public class Book{
private String title;
private String author;
private String isbn;
...
}
And my json response that I need to deserialize is as follow
{
"title":"the jungle book",
"author":"Rudyard Kipling",
"code":{
"isbn":"1616416920"
}
}
So the attribute isbn in my java class, needs to be populated using the nested field isbn inside the code object.
I tried to use the #JsonProperty as follow
#JsonProperty(value="code.isbn")
private String isbn;
But it still set the attribute isbn to null inside my java POJO class.
Can someone please suggest how can I do this.
Thanking you in advance.

Answer 1

you can write custom code to parse the json to create Book object having isbn value set by parsing nested object.
or
for the given json, you need to define an object say "Code"
public class Book {
#JsonProperty(value="title")
private String title;
#JsonProperty(value="author")
private String author;
#JsonProperty(value="code")
private Code code;
}
public class Code {
#JsonProperty(value="isbn")
public String isbn;
}