<plug-in className="org.apache.struts.validator.ValidatorPlugIn">
        <set-property property="pathnames" value="/WEB-INF/validator-rules.xml,
                                                  /WEB-INF/form.xml"/>
      </plug-in>

?使用Struts自动生成前台的JavaScript验证

1.导入Struts包
2.建立ValidatorForm 和相应的FormBean,JSP:login.jsp
3.修改struts-config.xml
???

 <form-bean name="loginForm" type="com.dowebber.struts.form.LoginForm" >
     <form-property name="username" type="java.lang.String"></form-property>
     <form-property name="password" type="java.lang.String"></form-property>
    </form-bean>

?4.创建验证的配置文件form.xml

<!DOCTYPE form-validation PUBLIC
          "-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.1.3//EN"
          "http://jakarta.apache.org/commons/dtds/validator_1_1_3.dtd">
<form-validation>
 <formset>
  <form name="loginForm">
   <field property="username" depends="required">
    <arg0 key="usernamelabel"/>
   </field>
   <field property="password" depends="required">
    <arg0 key="passwordlabel"/>
   </field>
  </form>
 </formset>
</form-validation>

?5.配置struts-config.xml 添加验证插件
6.去掉FormBean中的Validate方法
7.修改login.jsp
配置表单属性

<html:form action="/login" onsubmit="return validateLoginForm(this);">
<html:javascript formName="loginForm"/>

?
8.测试

生成的JavaScript冗长而且不易阅读,功能简单,此功能不实用,还不如自己写JavaScript