to put an object in a ObjectNode of Jackson
I am trying to set an Object in ObjectNode of Jackson and I am able to do that but I encountered a problem setting it into object node. the null attributes are also coming, using GSON I tried but then the " \" is coming in the request.
public class Testing4 { public static void main(String[] args) throws JsonProcessingException { ObjectNode request = null; ObjectMapper mapper = new ObjectMapper(); request = mapper.createObjectNode(); RequestParam requestParam = new RequestParam(); requestParam.setCustomerName("sachin"); requestParam.setCustomerOrderNumber("12344556"); request.set("request",mapper.convertValue(requestParam, JsonNode.class)); request.put("FatherName","jithin"); String req = mapper.createObjectNode().set("request", request).toString(); System.out.println(req); } private static Comparator<? super String> kFirst() { return (s1, s2) -> "k".equals(s1) ? -1 : "k".equals(s2) ? 1 : 0; } } the DTO class
public class RequestParam implements Serializable { /** * */ private static final long serialVersionUID = 1L; private String orderDueDate; private String originatingSystemOrderId; private String objectId; private String taskTypeId; private String customerId; private String customerName; private String customerOrderNumber; private Dataset dataset; } here I can get the o/p but the o/p consist of null assignments as well how will I remove the null assignments the o/p I am getting now
{ "request": { "request": { "orderDueDate": null, "originatingSystemOrderId": null, "objectId": null, "taskTypeId": null, "customerId": null, "customerName": "sachin", "customerOrderNumber": "12344556", "dataset": null }, "FatherName": "jithin" } } the o/p I want
{ "request": { "request": { "customerName": "sachin", "customerOrderNumber": "12344556" }, "FatherName": "jithin" } } please help, thanks
if @JsonInclude(Include.NON_NULL) dosent work then use
@JsonInclude(JsonInclude.Include.NON_NULL) (@JsonSerialize(include = Inclusion.NON_NULL) don’t use this its deprecated) @JsonInclude(JsonInclude.Include.NON_NULL) public class RequestParam implements Serializable {
private static final long serialVersionUID = 1L; private String orderDueDate; private String originatingSystemOrderId; private String objectId; private String taskTypeId; private String customerId; private String customerName; private String customerOrderNumber; private Dataset dataset; } 
@JsonInclude(Include.NON_NULL) public class RequestParam implements Serializable { private static final long serialVersionUID = 1L; private String orderDueDate; private String originatingSystemOrderId; private String objectId; private String taskTypeId; private String customerId; private String customerName; private String customerOrderNumber; private Dataset dataset; } You need to add the import statement – import com.fasterxml.jackson.annotation.JsonInclude;
Add @JsonInclude(Include.NON_NULL) before the DTO class definition
