This document provides an example of using DataWeave to transform XML input into a Java Object. The XML input contains user data that is mapped to a User class using DataWeave transformations. The User class is defined with firstName and lastName properties that correspond to the name and lastName elements in the XML. DataWeave code is used to parse the XML payload and set the properties of a User object that is returned.

1. xml input to Java Object
example

2. This tutorial explains how to develop a
DataWeave transformation from XML to
Java Object.
Pre-requisite:
 Anypoint Studio 5.2.0
 Mule ESB Runtime 3.7.1
 xml input files.
Input XML File
<user>
<name>Annie</name>
<lastName>Point</lastName>
</user>

4. <http:listener-config name="HTTP_Listener_Configuration" host="0.0.0.0"
port="8081" doc:name="HTTP Listener Configuration"/>
<flow name="testweaveFlow">
<http:listener config-ref="HTTP_Listener_Configuration" path="/"
metadata:id="cab0526f-779e-427c-9a33-be44f9b12696" doc:name="HTTP"/>
<dw:transform-message doc:name="Transform Message">
<dw:input-payload doc:sample="json.json"/>
<dw:set-payload><![CDATA[%dw 1.0
%type user = :object { class: "testweave.User" }
%output application/java
---
{
firstName: payload.user.name,
lastName: payload.user.lastName
} as :user]]></dw:set-payload>
</dw:transform-message>
<byte-array-to-string-transformer doc:name="Byte Array to String"/>
</flow>

5. In the transform code I created the Object type in
the header
“ %type user = :object { class:
"testweave.User"} ”
And the payload of the transform is converted to
User Object using the transform logic as below.
{
firstName: payload.user.name,
lastName: payload.user.lastName
} as :user

7. package testweave;
public class User {
private String firstName;
private String lastName;
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;
}
@Override
public String toString() {
// TODO Auto-generated method stub
return this.firstName+" "+this.lastName;
}
}