Java validating xml against schema

Posted by / 17-Dec-2017 02:23

You also set a factory attribute to specify the parser language to use.

(For SAX parsing, on the other hand, you set a property on the parser generated by the factory).

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 Error Handler used for the examples is a very simple one which reports the error to and continues until the XML document has been fully parsed or until a fatal-error has been reported.

Namespaces have been introduced to XML after the first specification of XML had received the official W3C Recommendation status.

(To learn more about XML Schema, you can review the online tutorial, XML Schema Part 0: Primer.

There are two ways to do that: , which stands for "XML Schema instance." The second line specifies the schema to use for elements in the document that do not have a namespace prefix-that is, for the elements you typically define in any simple, uncomplicated XML document.

The data set may include information from a tax declaration form as well as information from the employee's hiring form, with both elements named Note - The default namespace is actually a specific namespace.

It is defined as the "namespace that has no name." So you cannot simply use one namespace as your default this week, and another namespace as the default later.

This is the reason why (most of the) XML parser implementations do not support XML Namespaces by default, to handle the validation of XML documents with namespaces correctly it is therefore necessary to configure the underlying parsers to provide support for XML Namespaces.

) as defined below has been used in the code examples to validate the input document.

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You are seeing it here, because at this point you have learned enough about namespaces for the discussion to make sense.