How to use dynamic property names for a Json object

Question

How can we make the JSON property name dynamic. For example

public class Value {
    @JsonProperty(value = \"value\")
    private String val;

    public vo         


        

Answer 1

You could have all the possible names as variables, and annotate them so they are ignored if null. This way you only get in your JSON the one that has a value

Then change your setter to feed into the variable mapped to the key you want.

class Value {

    @JsonProperty("val")
    @JsonInclude(JsonInclude.Include.NON_NULL)
    private String val;

    @JsonProperty("new_key")
    @JsonInclude(JsonInclude.Include.NON_NULL)
    private String newKey;

    @JsonProperty("any_random_string")
    @JsonInclude(JsonInclude.Include.NON_NULL)
    private String anyRandomString;

    public void setVal(String s) {
        if(/* condition1 */)
            this.val = s;
        else if (/* condition2 */) {
            this.newKey = s;
        } else  if (/* condition3 */) {
            this.anyRandomString = s;
        }
    }

}