Validator框架使用时碰到问题

Question

我在用Validator验证框架时碰到发生以下错误：
[ERROR] DynaValidatorForm - org.apache.struts.validator.FieldChecks.validateRequired(java.lang.Object, org.apache.commons.validator.ValidatorAction, 
org.apache.commons.validator.Field, org.apache.struts.action.ActionErrors, javax.servlet.http.HttpServletRequest) <org.apache.commons.validator.ValidatorException: 
org.apache.struts.validator.FieldChecks.validateRequired(java.lang.Object, org.apache.commons.validator.ValidatorAction, org.apache.commons.validator.Field, 
org.apache.struts.action.ActionErrors, javax.servlet.http.HttpServletRequest)>org.apache.commons.validator.ValidatorException: 
org.apache.struts.validator.FieldChecks.validateRequired(java.lang.Object, org.apache.commons.validator.ValidatorAction, org.apache.commons.validator.Field, org.apache.struts.action.ActionErrors,
javax.servlet.http.HttpServletRequest)
        at org.apache.commons.validator.ValidatorAction.loadValidationMethod(ValidatorAction.java:627)
        at org.apache.commons.validator.ValidatorAction.executeValidationMethod(ValidatorAction.java:557)
        at org.apache.commons.validator.Field.validateForRule(Field.java:827)
        at org.apache.commons.validator.Field.validate(Field.java:906)
        at org.apache.commons.validator.Form.validate(Form.java:174)
        at org.apache.commons.validator.Validator.validate(Validator.java:367)
        at org.apache.struts.validator.DynaValidatorForm.validate(DynaValidatorForm.java:110)
        at org.apache.struts.action.RequestProcessor.processValidate(RequestProcessor.java:928)
        at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:204)
        at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
        at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
        at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
        at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
        at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
        at java.lang.Thread.run(Thread.java:595)相关配置文件：
struts-config.xml:
...
<form-bean  name="insertForm"
type="org.apache.struts.validator.DynaValidatorForm" >
<form-property name="name" type="java.lang.String" />
<form-property name="phone" type="java.lang.String" />
<form-property name="address" type="java.lang.String" />
</form-bean>
...    
<action   path="/insert"
          type="addressbook.actions.InsertAction"
          name="insertForm"
          scope="session"
          input="/insert.jsp"
          validate="true">
</action>
...    
<message-resources parameter="addressbook.Application"/>
  
<plug-in className="org.apache.struts.validator.ValidatorPlugIn">
  <set-property property="pathnames" value="/WEB-INF/validator-rules.xml,/WEB-INF/validator.xml" />
</plug-in>
...validator.xml:
...
<formset>
<form name="insertForm">
<field property="name" depends="required">  
<arg0 key="prompt.name" />
</field>

<field property="phone" depends="required,minlength">
<arg0 key="prompt.phone"/>
<arg1 name="minlength" key="${var:minlength}" resource="true"/>
<var>
<var-name>minlength</var-name>
<var-value>8</var-value>
</var>  
</field>

<field property="address" depends="required">
<arg0 key="prompt.address" />
</field>
</form>
</formset>
...Application.properties:
...
# The error messages for the Validation Actions
errors.required={0} is required.
errors.minlength={0} can not be less than {1} characters.
errors.maxlength={0} can not be greater than {1} characters.
errors.invalid={0} is invalid.errors.byte={0} must be a byte.
errors.short={0} must be a short.
errors.integer={0} must be an integer.
errors.long={0} must be a long.
errors.float={0} must be a float.
errors.double={0} must be a double.errors.date={0} is not a date.
errors.range={0} is not in the range {1} through {2}.
errors.creditcard={0} is an invalid credit card number.
errors.email={0} is an invalid e-mail address.
请高手帮忙

Answer 1

你这个是struts的什么版本啊?是struts1.2吗?还是其他的?注意版本之间的区别.
老的版本是使用ActionErrors的,而新的使用ActionMessages,还有validateRequired的方法中参数个数也是不一样的

Answer 2

我是使用struts1.2,validator_1_1_3.dtd的.
<validator name="required" classname="org.apache.struts.validator.FieldChecks" method="validateRequired" methodParams="java.lang.Object,
                       org.apache.commons.validator.ValidatorAction,
                       org.apache.commons.validator.Field,
                       org.apache.struts.action.ActionMessages,
                       org.apache.commons.validator.Validator,
                       javax.servlet.http.HttpServletRequest" msg="errors.required"/>