This document discusses parsing an XML payload in Mule ESB using DataWeave. It provides an example XML input file with user data. It then shows a Mule flow configuration that uses a DataWeave transform to parse the XML payload and output it as a Java object with the first and last name values. The DataWeave code treats the XML payload like a static class in Java to retrieve the name and last name values from the XML tags and assign them to variables.

1. MULE ESB: DATA WEAVE
PARSING XML PAYLOAD
BY MURALIDHAR. GUMMA

2. XML – JAVA CONVERSION IN DATAWEAVE MULE
PRE-REQUISITES:
• ANYPOINT STUDIO
• MULE ESB RUNTIME 3.8
• XML INPUT FILE.
INPUT XML FILE
<user>
<name>Max</name>
<lastName>Mule</lastName>
</user>

3. MULE FLOW

4. CONFIG.XML
<http:listener-config name="HTTP_Listener_Configuration"
host="0.0.0.0" port="8081" doc:name="HTTP Listener
Configuration"/>
<flow name="parsexmlFlow">
<http:listener config-
ref="HTTP_Listener_Configuration" path="/"
doc:name="HTTP"/>
<dw:transform-message metadata:id="3b459816-
cc8f-46aa-9f2f-34372d3b506c" doc:name="Transform
Message">
<dw:input-payload
doc:sample="D:MuraliSampleXML.xml"
mimeType="application/xml"/>
<dw:set-payload><![CDATA[%dw 1.0
%output application/java
---
{
firstname:payload.Details.user.name,
LastName:payload.Details.user.lastName
}]]></dw:set-payload>
</dw:transform-message>
<byte-array-to-string-transformer doc:name="Byte

5. IN THE TRANSFORM CODE, JUST USE THE BELOW SIMPLE
LOGIC.
THE XML DATA WILL COME TO THE TRANSFORM
MESSAGE AS PAYLOAD. NOW CONSIDER PAYLOAD AS A
STATIC CLASS IN JAVA AND FOLLOW THE BELOW CODE
TO GET THE WHATEVER THE DATA YOU NEED TO
RETRIEVE FROM AN XML TAG.
THE VALUES ARE ASSIGNED TO VARIABLES.
{
FIRSTNAME: PAYLOAD.USER.NAME,
LASTNAME: PAYLOAD.USER.LASTNAME
}

6. DATAWEAVE
Test this service from a browser or by using the postman you can find
the desired output

7. THANK Q