field.name

• The field.name property is used to set the field name for output/input purposes when the field name in JSON differs from the field name in the class.

Built-in Recommended Configuration

#Support for Jackson annotations
field.name=@com.fasterxml.jackson.annotation.JsonProperty#value

#Support for Gson annotations
field.name=@com.google.gson.annotations.SerializedName#value

demo

TestJsonFieldBean.java

public class TestJsonFieldBean {
    @JsonProperty("a")
    private Long propertyA;

    @SerializedName("b")
    private Long propertyB;

    //constructors...

    //getters...
}

Export as API response: