Bagaimana untuk menyusun peta menggunakan perpustakaan flexjson di Jawa?

Flexjson ialah perpustakaan ringan untuk mensiri dan menyahsiri objek Java ke dan dari format JSON. Kami juga boleh mensiri Map menggunakan kaedah serialize() kelas JSONSerializer, yang melakukan serialisasi cetek pada contoh sasaran.

Syntax

public String serialize(Object target)

Contoh

import flexjson.JSONSerializer;
import java.util.*;
public class JsonSerializeMapTest {
   public static void main(String[] args) {
      JSONSerializer serializer = new JSONSerializer().prettyPrint(true);
      Student student = new Student("Adithya", "Sai", 28, "Hyderabad");
      Map<String, Object> map = new HashMap<String, Object>();
      map.put("Student1", "Raja");
      map.put("Student2", "Ravi");
      map.put("my_student", student);
      String jsonStr = serializer.serialize(map);
      System.out.println(jsonStr);
   }
}
// Student class
class Student {
   private String firstName;
   private String lastName;
   private int age;
   private String address;
   public Student() {}
   public Student(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;
   }
   public String toString() {
      return "Student[ " +
             "firstName = " + firstName +
             ", lastName = " + lastName +
            ", age = " + age +
         ", address = " + address +" ]";
   }  
}

Output

{
   "my_student": {
      "address": "Hyderabad",
      "age": 28,
      "class": "Student",
      "firstName": "Adithya",
      "lastName": "Sai"
 },
 "Student1": "Raja",
 "Student2": "Ravi"
}

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