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How to wrap a JSON using flexjson in Java?
The Flexjson library is a lightweight Java library for serializing and de-serializing java beans, maps, arrays, and collections in a JSON format. A JSONSerializer is the main class for performing serialization of Java objects to JSON and by default performs a shallow serialization. We can wrap a JSON object using the rootName() method of JSONSerializer class, this method wraps the resulting JSON in a javascript object that contains a single field named rootName.
Syntax
public JSONSerializer rootName(String rootName)
Example
import flexjson.JSONSerializer;
public class JSONRootNameTest {
public static void main(String[] args) {
JSONSerializer serializer = new JSONSerializer().rootName("My_Employee").prettyPrint(true);
Employee emp = new Employee("Adithya", "Jai", 28, "Hyderabad");
String jsonStr = serializer.serialize(emp);
System.out.println(jsonStr);
}
}
// Employee class
class Employee {
private String firstName;
private String lastName;
private int age;
private String address;
public Employee() {}
public Employee(String firstName, String lastName, int age, String address) {
super();
this.firstName = firstName;
this.lastName = lastName;
this.age = age;
this.address = address;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public int getAge() {
return age;
}
public String getAddress() {
return address;
}
}Output
{
"My_Employee": {
"address": "Hyderabad",
"age": 28,
"class": "Employee",
"firstName": "Adithya",
"lastName": "Jai"
}
}
Updated on: 06-Jul-2020
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