Jackson: Convert java object to JsonNode

Following statements are used to convert Employee object to JsonNode.

Employee emp1 = new Employee();

emp1.setFirstName("Krishna");

emp1.setLastName("Gurram");

ObjectMapper mapper = new ObjectMapper();

JsonNode jsonNode = mapper.convertValue(emp1, JsonNode.class);

Find the below working application.

Employee.java

package com.sample.app.model;

public class Employee {
  private String firstName;
  private String lastName;

  public String getFirstName() {
    return firstName;
  }

  public void setFirstName(String firstName) {
    this.firstName = firstName;
  }

  public String getLastName() {
    return lastName;
  }

  public void setLastName(String lastName) {
    this.lastName = lastName;
  }

}

App.java

package com.sample.app;

import java.io.IOException;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.sample.app.model.Employee;

public class App {

  public static void main(String args[]) throws JsonProcessingException, IOException {
    Employee emp1 = new Employee();
    emp1.setFirstName("Krishna");
    emp1.setLastName("Gurram");

    ObjectMapper mapper = new ObjectMapper();
    JsonNode jsonNode = mapper.convertValue(emp1, JsonNode.class);

    JsonNode firstNameNode = jsonNode.get("firstName");
    JsonNode lastNameNode = jsonNode.get("lastName");

    System.out.println("First Name : " + firstNameNode.textValue());
    System.out.println("Last Name : " + lastNameNode.textValue());
  }

}

Output

First Name : Krishna

Last Name : Gurram

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