如何使用Java中的flexjson来包装JSON？

Flexjson库是一个轻量级的Java库，用于将Java beans、maps、arrays和collections序列化和反序列化为JSON格式。JSONSerializer是执行Java对象到JSON的序列化的主要类，并且默认执行浅层序列化。我们可以使用JSONSerializer类的rootName()方法来包装一个JSON对象，该方法将结果JSON包装在一个包含一个名为rootName的字段的javascript对象中。

public JSONSerializer rootName(String rootName)

Example

示例

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;
   }
}

输出

{
 "My_Employee": {
 "address": "Hyderabad",
 "age": 28,
 "class": "Employee",
 "firstName": "Adithya",
 "lastName": "Jai"
 }
}

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