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<action path="/prepareValidator" type="examples.SuccessAction">

<forward name="success" path="/jsp/validator/Validator.jsp" />

</action>

<action path="/processValidator"

           type="examples.validator.ProcessValidatorAction" name="validatorForm"

           scope="request" input="/jsp/validator/Validator.jsp"

           cancellable="true" validate="true">

           <set-property property="actionId" value="validatorAction" />

           <forward name="success"

              path="/jsp/validator/ValidatorResults.jsp" />

</action>

<html:text property="byteValue" />

<html:text property="shortValue" />

<html:text property="integerValue" />

<html:text property="longValue" />

<html:text property="floatValue" />

<html:text property="doubleValue" />

<html:text property="creditCard" />

<html:text property="date" />

<html:text property="email" />

<html:text property="mask" />

<html:text property="min" />

<html:text property="max" />

<html:text property="range" />

<html:text property="required" />

<html:password property="password" redisplay="false"/>

<html:password property="password2" redisplay="false"/>

<form-bean name="validatorForm"

           type="org.apache.struts.validator.DynaValidatorForm">

           <form-property name="byteValue" type="java.lang.String" />

           <form-property name="creditCard" type="java.lang.String" />

           <form-property name="date" type="java.lang.String" />

           <form-property name="doubleValue" type="java.lang.String" />

           <form-property name="email" type="java.lang.String" />

           <form-property name="floatValue" type="java.lang.String" />

           <form-property name="integerValue" type="java.lang.String" />

           <form-property name="longValue" type="java.lang.String" />

           <form-property name="mask" type="java.lang.String" />

           <form-property name="min" type="java.lang.String" />

           <form-property name="max" type="java.lang.String" />

           <form-property name="range" type="java.lang.String" />

           <form-property name="required" type="java.lang.String" />

           <form-property name="shortValue" type="java.lang.String" />

           <form-property name="password" type="java.lang.String" />

           <form-property name="password2" type="java.lang.String" />

</form-bean>

<form name="validatorForm">

    驗證長度

    <field property="byteValue" depends="byte">

       <arg key="prompt.byte" />

    </field>

    <field property="shortValue" depends="short">

       <arg key="prompt.short" />

    </field>

    <field property="integerValue" depends="integer">

       <arg key="prompt.integer" />

    </field>

    <field property="longValue" depends="long">

       <arg key="prompt.long" />

    </field>

    <field property="floatValue" depends="float">

       <arg key="prompt.float" />

    </field>

    <field property="doubleValue" depends="double">

       <arg key="prompt.double" />

    </field>

    <field property="creditCard" depends="creditCard">

       <arg key="prompt.creditCard" />

    </field>

    <field property="date" depends="date">

       <arg key="prompt.date" />

       <var>

           <var-name>datePattern</var-name>

           <var-value>MM/dd/yyyy</var-value>

       </var>

    </field>

    <field property="email" depends="email">

       <arg key="prompt.email" />

    </field>

    <field property="mask" depends="mask">

       <arg key="prompt.mask" />

       <var>

       <var-name>mask</var-name>

       <var-value>^"d{5}"d*$</var-value>

       </var>

    </field>

    <field property="min" depends="minlength">

       <arg key="prompt.min" position="0"/>

       <arg name="minlength" key="${var:minlength}" resource="false" position="1" />

       <var>

           <var-name>minlength</var-name>

           <var-value>5</var-value>

       </var>

    </field>

    <field property="max" depends="maxlength">

       <arg key="prompt.max" position="0"/>

       <arg name="maxlength" key="${var:maxlength}" resource="false" position="1" />

       <var>

           <var-name>maxlength</var-name>

           <var-value>10</var-value>

       </var>

    </field>

    <field property="range" depends="integer,intRange">

         <arg key="prompt.range" />

         <arg name="intRange" key="${var:min}" resource="false" position="1" />

         <arg name="intRange" key="${var:max}" resource="false" position="2" />

       <var>

           <var-name>min</var-name>

           <var-value>100</var-value>

       </var>

       <var>

           <var-name>max</var-name>

           <var-value>1000</var-value>

       </var>

</field>

    驗證必填值和兩個值一致

    <field property="required" depends="required">

       <arg key="prompt.required" />

       </field>

       <field property="password" depends="required,minlength,twofields">

       <arg key="prompt.password" position="0"/>

       <arg name="minlength" key="${var:minlength}" resource="false" position="1"/>

        <arg name="twofields" key="prompt.password2" position="1"/>

       <var>

           <var-name>minlength</var-name>

           <var-value>5</var-value>

       </var>

       <var>

           <var-name>secondProperty</var-name>

           <var-value>password2</var-value>

       </var>

    </field>

</form>

自定義的validator

<global>

       <!-- Custom Validator -->

       <validator name="twofields"

                   classname="examples.validator.CustomValidator"

                   method="validateTwoFields"

                   methodParams="java.lang.Object,

                       org.apache.commons.validator.ValidatorAction,

                       org.apache.commons.validator.Field,

                       org.apache.struts.action.ActionMessages,

                       javax.servlet.http.HttpServletRequest"

                   msg="errors.twofields" />

</global>