Struts验证框架

<1>:验证规则  .xml validator-rules.xml
 <2>:具体属性  .xml validation.xml
 <3>:在struts-config.xml文件进行配置
  <plug-in className="org.apache.struts.validator.ValidatorPlugIn">
         <set-property property="pathnames" value="/WEB-INF/validator-rules.xml,
                                                   /WEB-INF/validation.xml"/>
        </plug-in>
 <5>:注意用html标签和Form(要继承ValidatorForm 而不是ActionForm)
  <html:javascript formName="userForm"/>
  这个生成javaScript代码