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Some themes do not support client-side validation.

Step 1

Create the form.

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{snippet:id=clientValidation|lang=xml|javadoc=false|url=

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struts2/apps/showcase/src/main/webapp/WEB-INF/validation/quiz-client.jsp}

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This case uses the default xhtml theme, so the <saf<s:head > tag is used to link a style sheet.

Step 2

Create the Action class.

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{snippet:id=quizAction|javadoc=false|lang=java|url=

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struts2/apps/showcase/src/main/java/org/apache/

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struts2/

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showcase/validation/QuizAction.java}

Step 3

Create the validation.xml to configure the validators to be used.

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{snippet:id=quizValidators|javadoc=false|lang=xml|url=

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struts2/apps/showcase/src/main/

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resources/org/apache/

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struts2/showcase/validation/QuizAction-validation.xml}

Action and Namespace

A correct action and namespace attributes must be provided to the <s:form> tag. For example, if the action named "quizClient" is defined in the "/validation" namespace, the form must be configured as:

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While the following will "work" in the sense that the form will function correctly, client-side validation will not. That is because Struts must know the exact namespace and action (rather than a URL) to properly support validation.

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