DynaActionForm 은 validator(유효성 검증) 기능을 활용할수 없다.

예>

<form-beans>
    <form-bean name="userForm" type="org.apache.struts.action.DynaActionForm">
   <form-property name="id" type="java.lang.String" />
   <form-property name="name" type="java.lang.String" />
   <form-property name="pw" type="java.lang.String" />
   <form-property name="email" type="java.lang.String" />
   <form-property name="addr" type="java.lang.String" />
  </form-bean>

</form-beans>

만약 validator프레임워크를 적용하고자 한다면 DynaActionForm 클래스의 하위

클래스인 DynaValidatorForm 클래스를 사용하면 된다.

<form-bean name="boardForm" 

               type="org.apache.struts.validator.DynaValidatorActionForm">
   <form-property name="fileNo" type="java.lang.Integer" />
   <form-property name="boardValue" type="com.sk.model.Board" />
   <form-property name="fileList" type="org.apache.struts.upload.FormFile[]" size="3"/>
</form-bean>