Validating xml sax

08-Jul-2017 01:09

This example demonstrates that functionality by showing you how to create a simple SAX validator application in Microsoft® Visual Basic® 6.0.

The application allows the user to select an XML file and have it validated against an XSD schema file.

In this example, the SAX reader parses the sample XML file (books.xml), and writes validation results as output to a textbox control on the main form for the application.

The application is kept simple to demonstrate the fundamental principles involved.

In effect, you plug in a resolver that knows how to map an online location to a location on your filesystem (or more precisely a location to another one).

This resolver is set through the You can find the source for this article here (note that associated tests use a custom security policy file to prevent network access, and if you want to test directly inside your IDE, you should reuse the system properties used inside the POM).

SAX processes documents state-independently (the handling of an element does not depend on the elements that came before). A SAX parser comes with JDK, so there is no need to dowload a dependency. *The maximum size limit for file upload is 2 megabytes.[This sample application uses a feature that was first implemented in MSXML 4.0.]With MSXML 4.0 and later, validation support for SAX applications was added.Depending of you enterprise security policy, some - if not most of your middleware servers have no access to Internet.It’s even worse when your development infrastructure is isolated from the Internet (such as banks or security companies).

SAX processes documents state-independently (the handling of an element does not depend on the elements that came before). A SAX parser comes with JDK, so there is no need to dowload a dependency. *The maximum size limit for file upload is 2 megabytes.[This sample application uses a feature that was first implemented in MSXML 4.0.]With MSXML 4.0 and later, validation support for SAX applications was added.Depending of you enterprise security policy, some - if not most of your middleware servers have no access to Internet.It’s even worse when your development infrastructure is isolated from the Internet (such as banks or security companies).One of the main advantages of validation is that we can combine it with standard parsers like SAX.