在Java中使用Jackson库将POJO转换为XML？

public String writeValueAsString(Object value) throws JsonProcessingException

import com.fasterxml.jackson.dataformat.xml.*;
public class POJOToXmlTest {
   public static void main(String args[]) throws Exception {
      try {
         XmlMapper xmlMapper = new XmlMapper();
         Person pojo = new Person();
         pojo.setFirstName("Raja");
         pojo.setLastName("Ramesh");
         pojo.setAddress("Hyderabad");
         String xml = xmlMapper.writeValueAsString(pojo);
         System.out.println(xml);
      } catch(Exception e) {
         e.printStackTrace();
      }
   }
}
// Person class
class Person {
   private String firstName;
   private String lastName;
   private String address;
   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;
   }
   public String getAddress() {
      return address;
   }
   public void setAddress(String address) {
      this.address = address;
   }
}

<Person xmlns="">
   <firstName>Raja</firstName>
   <lastName>Ramesh</lastName>
   <address>Hyderabad</address>
</Person>