Question

I have a JSON object, say:

{
  "foo": {
    "bar": 1
  },
  "baz": 2
}

and I want to bind it into a Java object, like:

@JsonIgnoreProperties(ignoreUnknown = true)
public class Foo {
  private int bar;
  @JsonProperty("baz")
  private int baz;
}

How can I set the value of foo.bar from JSON to the bar field in the Foo Java object?

I’ve tried annotating the field with @JsonProperty("foo.bar"), but it doesn’t work like that.

Answer 1

This ain’t perfect but it’s the most elegant way I could figure out.

@JsonProperty("foo")
public void setFoo(Map<String, Object> foo) {
  bar = (Integer) foo.get("bar");
}