Using schema validate xml file

Also describes how to optimize validation by caching schemas. Extensible Markup Language XML documents contain elements and attributes, and provide a flexible and powerful way to exchange data between applications and organizations. You will then learn how to use the XmlValidatingReader class to validate an XML document against the specified grammar. You will also learn how to use the XmlSchemaCollection class to cache schemas in memory as a way to optimize XML validation. The following list outlines the recommended hardware, software, network infrastructure, and service packs that you need: Microsoft Visual Basic or Microsoft Visual Basic.

Save the file as Product. In Visual Studio or in Visual Studio. Reopen Product. Visual Studio or Visual Studio. NET displays a new file named Module1. At the beginning of this file, add two Imports statements, as follows:. In Module1 before the start of the Main subroutine , declare a boolean variable named isValid, as follows:.

Set this property to DTD, as follows:. If any validation errors occur, the validating reader generates a validation event.

Add a comment. Active Oldest Votes. SAXParser import javax. SAXParserFactory import javax. Schema import javax. ValidatorHandler import org. David Crawshaw David Crawshaw 10k 6 6 gold badges 36 36 silver badges 39 39 bronze badges. Eugene Ryzhikov Eugene Ryzhikov Here is an adaptation to minor API changes in 2. InputSource import scala.

NoBindingFactoryAdapter import scala. Horst Dehmer Horst Dehmer 1 1 silver badge 10 10 bronze badges. This implementation has an enormous memory leak — James Robinson. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. I'd prefer something using the standard library, but I can install a third-party package if necessary. I am assuming you mean using XSD files. Surprisingly there aren't many python XML libraries that support this. Check Validation with lxml.

The page also lists how to use lxml to validate with other schema types. If you get an error like "Could not find function xmlCheckVersion in library libxml2. Is libxml2 installed? In order to validate more than one file, there is no need to create an XMLSchema object every time, therefore:. For more options read here: Validation with lxml. It's pure Python, available on PyPi and doesn't have many dependencies. The method raises an exception if the file doesn't validate against the XSD.

That exception then contains some violation details. Alternatively, xmlschema directly works on file objects and in memory XML trees either created with xml. ElementTree or lxml. It handles almost every schema construct and supports multiple namespaces. There are two ways actually there are more that you could do this. How are we doing? Please help us improve Stack Overflow. Take our short survey. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Collectives on Stack Overflow. Learn more.