JSON to XML Mapping, Root Elements & Attribute Syntax

While modern web applications utilize JSON, enterprise SOAP services, legacy finance systems, and RSS feeds rely on XML.

1. Tree Mapping Rules

• Objects: Converted into parent XML tags containing child element tags.
• Arrays: Repeated sibling tags with a configurable item tag (e.g. or pluralized root).
• Attributes: Keys prefixed with @ (e.g. "@id": "100") map directly to XML element attributes.

<?xml version="1.0" encoding="UTF-8"?>
<root>
  <user id="usr_101">
    <name>Alice Smith</name>
    <roles>
      <role>Admin</role>
      <role>Developer</role>
    </roles>
  </user>
</root>