在精通struts的例子里加了个文本框password,但显示的还是username内容，而不是password提交的内容，怎么回师？？？？？

hello.jsp<%@ page contentType="text/html;charset=gb2312" language="java" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<!-- UTF-8-->
<html:html locale="true">
  <head>
    <title><bean:message key="hello.jsp.title"/></title>
    <html:base/>
  </head>
  <body bgcolor="white"><p>    <h2><bean:message key="hello.jsp.page.heading"/></h2><p>   <html:errors/><p>     <logic:present name="personbean" scope="request">
       <h2>
         <bean:message key="hello.jsp.page.name"/>
         <bean:write name="personbean" property="userName" />!<br><!--personbean.java的getUserName()=hello weiqin -->
         <bean:message key="hello.jsp.page.ps"/>
         <bean:write name="personbean" property="passWord" /> 
       </h2>
    </logic:present>    <html:form action="/HelloWorld.do"  ><!--focus="userName" -->      <bean:message key="hello.jsp.prompt.person"/>
      <html:text property="userName" size="16" maxlength="16"/><!-- --><br>
      <bean:message key="hello.jsp.prompt.ps"/>
      <html:text property="passWord" size="16" maxlength="16"/><br>
      <html:submit property="submit" value="Submit"/>
      <html:reset/>    </html:form><br>    <html:img page="/struts-power.gif" alt="Powered by Struts"/>  </body>
</html:html>helloaction.java
package hello;import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpServletResponse;import org.apache.struts.action.Action;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.util.MessageResources;public final class HelloAction extends Action {    /**
     * Process the specified HTTP request, and create the corresponding HTTP
     * response (or forward to another web component that will create it).
     * Return an <code>ActionForward</code> instance describing where and how
     * control should be forwarded, or <code>null</code> if the response has
     * already been completed.
     */
    public ActionForward execute(ActionMapping mapping,
                                 ActionForm form,
                                 HttpServletRequest request,
                                 HttpServletResponse response)
    throws Exception {        // These "messages" come from the ApplicationResources.properties file
        MessageResources messages = getResources(request);        /*
         * Validate the request parameters specified by the user
         * Note: Basic field validation done in HelloForm.java
         *       Business logic validation done in HelloAction.java
         */
        ActionMessages errors = new ActionMessages();
        String userName = (String)((HelloForm) form).getUserName();
        String passWord = (String)((HelloForm) form).getPassWord();/////////////"mima"从helloform得到
        String badUserName = "Monster";        if (userName.equalsIgnoreCase(badUserName)) {
           errors.add("username", new ActionMessage("hello.dont.talk.to.monster", badUserName ));
           //saveErrors(request, errors);
           return (new ActionForward(mapping.getInput()));
        }        /*
         * Having received and validated the data submitted
         * from the View, we now update the model
         */
        PersonBean pb = new PersonBean();
        pb.setUserName(userName);
        pb.setPassWord(passWord);/////////////////////////String passWord = "mima";
        pb.saveToPersistentStore();        /*
         * If there was a choice of View components that depended on the model
         * (or some other) status, we'd make the decision here as to which
         * to display. In this case, there is only one View component.
         *
         * We pass data to the View components by setting them as attributes
         * in the page, request, session or servlet context. In this case, the
         * most appropriate scoping is the "request" context since the data
         * will not be neaded after the View is generated.
         *
         * Constants.PERSON_KEY provides a key accessible by both the
         * Controller component (i.e. this class) and the View component
         * (i.e. the jsp file we forward to).
         */        request.setAttribute( Constants.PERSON_KEY, pb);        // Remove the Form Bean - don't need to carry values forward
        request.removeAttribute(mapping.getAttribute());        // Forward control to the specified success URI
        return (mapping.findForward("SayHello"));    }
}
helloform.javapackage hello;import javax.servlet.http.HttpServletRequest;import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;public final class HelloForm extends ActionForm {    private String userName = null;
    private String passWord = null;//////haha
    
    public String getUserName() {
        return (this.userName);
    }    public void setUserName(String userName) {
        this.userName = userName;
    }
   ///////////////////
    public String getPassWord() {
        return (this.userName);
    }    public void setPassWord(String passWord) {
        this.passWord = passWord;
    }
    ///////////////////////
    /**
     * Reset all properties to their default values.
     */
    public void reset(ActionMapping mapping, HttpServletRequest request) {
        this.userName = null;
    }    /**
     * Validate the properties posted in this request. If validation errors are
     * found, return an <code>ActionErrors</code> object containing the errors.
     * If no validation errors occur, return <code>null</code> or an empty
     * <code>ActionErrors</code> object.
     */
    public ActionErrors validate(ActionMapping mapping,
                                 HttpServletRequest request) {        ActionErrors errors = new ActionErrors();        if (( passWord== null) || (passWord.length() < 1))
            errors.add("username", new ActionMessage("hello.no.username.error"));//////userName userName        return errors;
    }
}
personbean.javapackage hello;
public class PersonBean {    private String userName = null;
    private String passWord = null;////////
   
    public String getUserName() {
        return this.userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
///////////////////////////
    public String getPassWord() {
        return this.passWord;
    }
    public void setPassWord(String passWord) {
        this.passWord = passWord;
    }
//////////////////////////    
    /**
     * This is a stub method that would be used for the Model to save
     * the information submitted to a persistent store. In this sample
     * application it is not used.
     */
    public void saveToPersistentStore() {        /*
         * This is a stub method that might be used to save the person's
         * name to a persistent store(i.e. database) if this were a real application.
         *
         * The actual business operations that would exist within a Model
         * component would depend upon the requirements of the application.
         */
    }
}哪里不对啊？两个都始终显示username的内容