Data Converters Documentation

JSON to XML Mapping, Root Elements & Attribute Syntax

Engineering guide on converting JSON hierarchies to valid XML documents, managing root tags, XML declaration headers, and attribute prefixes.

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>

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