W3C_XML_SCHEMA_NS_URI); // load a WXS schema, represented by a Schema instance Source schema File = new Stream Source(new File("my Schema.xsd")); Schema schema = Schema(schema File); // create a Validator instance, which can be used to validate an instance document Validator validator = Validator(); // validate the DOM tree try catch (SAXException e) on a parser factory.
The former technique will cause parsers to use the new validation API; the latter will cause parsers to use their own internal validation facilities.
To be notified of validation errors in an XML document, the following must be true: It is helpful to start by defining the constants you will use when configuring the factory.
These are the same constants you define when using XML Schema for SAX parsing, and they are declared at the beginning of the Because JAXP-compliant parsers are not namespace-aware by default, it is necessary to set the property for schema validation to work.
The complete code listing for the Java-based XML validation tool discussed in this post is included at the end of the post. Validator is obtained from the /** * Validate provided XML against the provided XSD schema files. It enables you to quickly check that input is roughly in the form you expect and quickly reject any document that is too far away from what your process can handle.If there's a problem with the data, it's better to find out earlier than later.package provides an API for XML documents validation. The validation process verify that an XML document is an instance of a specified XML schema file or XSD file.