How can I ingnore some elements when reading XML using Jackson/FasterXML?

Question

I want to skip all nodes except first_name ,node100 and its children. I have this XML (In reality I have many employee and each employee tag has many nodes):

 <employees>
        <employee>
            <first_name>John</first_name>
            <last_name>Doe</last_name>
            <age>26</age>
        </employee>
        <employee>
            <first_name>Peter</first_name>
            <last_name>Parker</last_name>
            <age>30</age>
        </employee>
    </employees>

I am able to read the using Jackson FasterXML. I have created 2 POJOS to map above XML structure

  @JacksonXmlRootElement(localName = "employees") public final class Employees {
        @JacksonXmlElementWrapper(localName = "employee", useWrapping = false)
        private Employee[] employee;
//ommiteed getter and setters

public final class Employee {
    @JacksonXmlProperty(localName = "id", isAttribute = true)
    private String id;
    @JacksonXmlProperty(localName = "first_name")
    private String firstName;
    @JacksonXmlProperty(localName = "last_name")
    private String lastName;
    @JacksonXmlProperty(localName = "age")
    private int age;

Now in production the xml have 1000s nodes inside node

<employee>
                <first_name>John</first_name>
                <last_name>Doe</last_name>
                <age>26</age>
                <node1>  </node1>
                <node2>  </node2>

                ..

                <node100> 
                   <values> 
                  <value> val1 </value>
                  <value> val1 </value>
                  <value> val1 </value>
                  <value> val1 </value>
                  </node100> 

            </employee>


    <node100>  is also inside 4-5 nodes (which i have not shown above).

So my question is how can I just read first_name , last_name, and tag . What should be the structure of my POJO class ?

Code to convert XML to POJO

System.out.println( " hello");
ObjectMapper objectMapper = new XmlMapper();
// Reads from XML and converts to POJO
Employees employees = objectMapper.readValue(
        StringUtils.toEncodedString(Files.readAllBytes(Paths.get("C:\\Users\\91895\\Downloads\\File\\XmlFile.xml")), StandardCharsets.UTF_8),
        Employees.class);
System.out.println(employees);

Answer 1

In your class define the elements that you want to read from XML. To ignore other elements configure ObjectMapper correspondingly:

objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);