Jackson DataFormat XML framework
Jackson DataFormat XML is a Java library for XML data processing.It provides a convenient way to read and write XML data so that developers can easily process the conversion between XML documents and objects.This article will introduce how to use the Jackson DataFormat XML framework and provide some Java code examples.
Before using Jackson DataFormat XML, we first need to introduce related dependence.You can add the following dependencies to the project's Maven or Gradle construct:
Maven:
<dependency>
<groupId>com.fasterxml.jackson.dataformat</groupId>
<artifactId>jackson-dataformat-xml</artifactId>
<version>2.13.0</version>
</dependency>
Gradle:
groovy
implementation 'com.fasterxml.jackson.dataformat:jackson-dataformat-xml:2.13.0'
After introducing dependence, we can start using Jackson DataFormat XML.
1. Serialized object to XML
First of all, we need to sequence a Java object to XML, which can be implemented using the `xmlmapper` class.
The following is a simple example that sequences a `Person` object to XML:
import com.fasterxml.jackson.dataformat.xml.XmlMapper;
import com.fasterxml.jackson.core.JsonProcessingException;
public class XmlSerializationExample {
public static void main(String[] args) {
Person person = new Person("John", 30);
XmlMapper xmlMapper = new XmlMapper();
try {
String xml = xmlMapper.writeValueAsString(person);
System.out.println(xml);
} catch (JsonProcessingException e) {
e.printStackTrace();
}
}
}
class Person {
private String name;
private int age;
// Construct function, Getter, and Setter method
public Person(String name, int age) {
this.name = name;
this.age = age;
}
// omit the getter and setter method
}
The above code will output the following xml:
<Person>
<name>John</name>
<age>30</age>
</Person>
2. Reverse serialization XML to object
In addition to the sequence of the object to XML, the Jackson DataFormat XML can also sequence the XML back sequence to the Java object.
The following is a simple example. The above -mentioned sequence of XML desertic serialization is transformed into the `Person` object:
import com.fasterxml.jackson.dataformat.xml.XmlMapper;
import com.fasterxml.jackson.core.JsonProcessingException;
public class XmlDeserializationExample {
public static void main(String[] args) {
String xml = "<Person><name>John</name><age>30</age></Person>";
XmlMapper xmlMapper = new XmlMapper();
try {
Person person = xmlMapper.readValue(xml, Person.class);
System.out.println (Person.getName ()); // Output "John"
System.out.println (Person.getage ()); // Output 30 30
} catch (JsonProcessingException e) {
e.printStackTrace();
}
}
}
class Person {
private String name;
private int age;
// Construct function, Getter, and Setter method
public Person(String name, int age) {
this.name = name;
this.age = age;
}
// omit the getter and setter method
}
The above code will be output:
John
30
This article introduces how to use Jackson DataFormat XML framework to process XML data.You can use the `xmlmapper` class to easily sequence the Java object to XML, and the XML back series to the Java object.This enables developers to process XML data more easily in Java applications.
