验证框架问题（急）

Question

validation 中是这么写的。登陆后提示用户名密码不能为空，但是为什么不能提示密码长度不能小于6？
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE form-validation PUBLIC "-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.0//EN" "http://jakarta.apache.org/commons/dtds/validator_1_0.dtd">
<form-validation>
    <formset>
       <form name="login_Form">
          <field property="userName" depends="required">
          <arg0 key="lg"/>
          </field>
          <field property="passWord" depends="required,minlength">
           <arg0 key="pw"/>
           <arg1 name = "minlength" key = "${minlength}" resource = "false"/>
           <var>
<var-name>minlength</var-name>
<var-value>6</var-value>
           </var>
           </field>
       </form>
 </formset>
 </form-validation>

Answer 1

<form name="login_Form">
    <field property="userName" depends="required">
<arg0 key="lg"/>    </field>
    <field property="passWord" depends="required,minlength">
<arg0 key="pw" />
<var>
    <var-name>minlength</var-name>
<var-value>6</var-value>
</var>
<arg1 name = "minlength" key = "${minlength}" resource = "false"/>
   </field>
</form>
看下。

Answer 2

在ｖａｌｉｄａｔｏｒ－ｒｕｌｅ。ｘｍｌ中要有：
<validator name="minlength"
            classname="org.apache.struts.validator.FieldChecks"
               method="validateMinLength"
         methodParams="java.lang.Object,
                       org.apache.commons.validator.ValidatorAction,
                       org.apache.commons.validator.Field,
                       org.apache.struts.action.ActionErrors,
                       javax.servlet.http.HttpServletRequest"
              depends=""
                  msg="errors.minlength">         <javascript><![CDATA[
            function validateMinLength(form) {
                var isValid = true;
                var focusField = null;
                var i = 0;
                var fields = new Array();
                oMinLength = new minlength();
                for (x in oMinLength) {
                    var field = form[oMinLength[x][0]];
                    
                    if (field.type == 'text' ||
                        field.type == 'textarea') {
                        
                        var iMin = parseInt(oMinLength[x][2]("minlength"));
                        if ((trim(field.value).length > 0) && (field.value.length < iMin)) {
                            if (i == 0) {
                                focusField = field;
                            }
                            fields[i++] = oMinLength[x][1];
                            isValid = false;
                        }
                    }
                }
                if (fields.length > 0) {
                   focusField.focus();
                   alert(fields.join('\n'));
                }
                return isValid;
            }]]>
         </javascript>      </validator>

Answer 3

应该这样写：            <field property="newPassword" depends="minlength, maxlength">
              <arg0 key="loginForm.newPassword"/>
              <arg1 name="minlength" key="${var:minlength}" resource="false"/>
              <arg2 name="maxlength" key="${var:maxlength}" resource="false"/>
              <var><var-name>minlength</var-name><var-value>6</var-value></var>
              <var><var-name>maxlength</var-name><var-value>20</var-value></var>
            </field>