如何使用Java中的JSON-lib API將一個bean轉換為XML？

net.sf.json.xml.XMLSerializer類別是一個用於將JSON轉換為XML的實用工具類別。在將JSONObject實例轉換為XML時，該類別可以新增提示以便轉換回JSON。我們可以使用XMLSerializer類別的write()方法將JSON值寫入一個帶有UTF-8編碼的XML字串中，並且它可以傳回一個格式良好的XML文檔的字串表示。

語法

public String write(JSON json)

Example

import net.sf.json.JSONObject;
import net.sf.json.xml.XMLSerializer;
public class ConvertBeanToXMLTest {
   public static void main(String[] args) {
      Student student = new Student("Sai", "Adithya", 25, "Pune");
      JSONObject jsonObj = JSONObject.fromObject(student);
      System.out.println(jsonObj.toString(3)); //pretty print JSON
      XMLSerializer xmlSerializer = new XMLSerializer();
      String xml = xmlSerializer.write(jsonObj);
      System.out.println(xml);
   }
   public static class Student {
      private String firstName, lastName, address;
      public int age;
      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;
      }
   }
}

輸出

#

{
   "firstName": "Sai",
   "lastName": "Adithya",
   "address": "Pune",
   "age": 25
}
<?xml version="1.0" encoding="UTF-8"?>
<o>
 <address type="string">Pune</address>
 <age type="number">25</age>
 <firstName type="string">Sai</firstName>
 <lastName type="string">Adithya</lastName>
</o>
<!--?xml version="1.0" encoding="UTF-8"?-->

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