How to use libxmljs for XML Validation In Javascript
libxmljs
is a popular library for XML processing in Node.js. It provides support for XML validation against XSD schemas. Here’s how to use libxmljs
for XML validation.
Installation :
npm install libxmljs
Example: Implementation to validate XML against XSD using libxmljs library.
const fs = require('fs');
const libxml = require('libxmljs');
// Load XML and XSD files
const xmlString = fs.readFileSync('data.xml', 'utf-8');
const xsdString = fs.readFileSync('schema.xsd', 'utf-8');
// Parse XML and XSD
const xmlDoc = libxml.parseXml(xmlString);
const xsdDoc = libxml.parseXml(xsdString);
// Validate XML against XSD
const isValid = xmlDoc.validate(xsdDoc);
// Check validation result
if (isValid) {
console.log('XML is valid against XSD.');
} else {
console.error('XML validation failed:');
const validationErrors = xmlDoc.validationErrors;
validationErrors.forEach(
error => console.error(error.message));
}
Output:
XML is valid against XSD.
How to Validate XML against XSD in JavaScript ?
XML (Extensible Markup Language) is a widely used format for storing and exchanging structured data. XSD (XML Schema Definition) is a schema language used to define the structure, content, and data types of XML documents. Validating XML against XSD ensures that the XML document conforms to the specified schema.
XML (Extensible Markup Language):
- It is a widely used format for structuring and storing data hierarchically.
- It is often used for data exchange between different systems or platforms due to its flexibility and platform independence.
XSD (XML Schema Definition):
- It acts as a standard for defining the structure, content, and data types of XML documents.
- It ensures consistency and integrity by specifying the rules that XML data must adhere to.
Table of Content
- Why Validate XML Against XSD?
- Tools for XML Validation
- Sample Data Format
- Using dedicated XSD validation library
- Using libxmljs for XML Validation
- Real-world Applications and Use Cases
- Conclusion