THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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The example code for this tutorial, Formform_XML_Validation_Struts2_Ant or Form_XML_Validation_Struts2_Mvn, is available on Google Code - httpxml_validation, is available for checkout at https://codesvn.google.com/p/struts2-examples/downloads/list |
Introduction
In this tutorial we'll cover how to validate a user's input in form fields using Struts 2's XML validation methodology. In the Form Validation tutorial we discussed validating a user's input using the validate method in the Action class. Using a separate XML validation file gives you the ability to use validators built-in to the Struts 2 framework.
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The example application that supports this tutorial (Form_XML_Validation_Struts2 available at http://code.google.com/p/struts2-examples/downloads/list
.) shows how to use Struts 2's XML validation methodology. The information that can be edited is encapsulated in an object of class Person.
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To validate a user's form field entries you can use a separate XML file that contains your validation rules. The XML file that contains the validation rules must be named as ActionClassName-validation.xml. In the example application, the XML validation file is named EditAction-validation.xml (see src/main/resources/org/apache/struts/edit/action for the Maven example or src/org/apache/struts/edit/action for the Ant example).
Struts 2 provides several different validators that you can use in the XML validation file. See Validation for a list of validators you can employ.
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