Java CoreXMLDeserializers-class And Method Code Example

CoreXMLDeserializers is a class in the Jackson library that contains a set of pre-built deserializers for several common XML types like org.w3c.dom.Node, org.w3c.dom.Element, org.dom4j.Node, org.dom4j.Element, etc.

It is not meant to be instantiated or subclassed by the user, it is used by the ObjectMapper class to register deserializers for XML types.

Here is an example of how you can use CoreXMLDeserializers to configure a ObjectMapper instance to use the deserializers for certain types:

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.dataformat.xml.XmlMapper;
import com.fasterxml.jackson.dataformat.xml.deser.CoreXMLDeserializers;

public class Main {
    public static void main(String[] args) {
        XmlMapper mapper = new XmlMapper();
        mapper.registerModule(new CoreXMLDeserializers());

In this example, an XmlMapper instance is created and it is used to register the deserializers for XML types provided by the CoreXMLDeserializers class using mapper.registerModule().

Here is an example of how to use the CoreXMLDeserializers class in the com.fasterxml.jackson.databind package to deserialize an XML string into a Java object:

import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.dataformat.xml.XmlMapper;

public class Example {
    public static void main(String[] args) throws Exception {
        String xml = "<person><name>John Doe</name><age>30</age></person>";

        ObjectMapper mapper = new XmlMapper();

        Person person = mapper.readValue(xml, Person.class);

class Person {
    private String name;
    private int age;

    // getters and setters

This example uses the XmlMapper class, which is a specialized ObjectMapper for handling XML. The readValue() method is used to deserialize the XML string into a Person object.

It's important to notice that you need to enable the DeserializationFeature.ACCEPT_SINGLE_VALUE_AS_ARRAY to handle the cases when the XML contain array values like

<person><name>John Doe</name><age>30</age><address>street 1</address></person>

Note that this is just a basic example and you should configure the mapper according to your specific needs.