一个简单的struts例子 遇到无法解决的问题

jsp文件：文件名：hello.jsp<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%@ 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"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<htm:html local="true">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<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.hello"/>
<bean:write name="personbean" propert="userName"/>!<p>
</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"/><html:submit property="submit" value="Submit"></html:submit><html:reset></html:reset>
</html:form><br><html:img page="/struts-power.gif" alt="Powered by Struts"/></body>
</htm:html>struts-config.xml文件：<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd"><struts-config>
  <data-sources />
    <form-beans>
   <form-bean name="HelloForm" type="hello.HelloForm"></form-bean>
  
  </form-beans>
  <global-exceptions />
  <global-forwards />
  <action-mappings >
      <!-- Say Hello! -->
      
      <action path="/HelloWorld" 
         type="hello.HelloAction"
         name="HelloForm"
         scope="request"
         validate="true"
         input="/hello.jsp">
         
         <forward name="SayHello" path="/hello.jsp"></forward>
         
      </action>
      
  
  </action-mappings>
  <message-resources parameter="com.huazhengyangguang.struts.ApplicationResources" />
</struts-config>
web.xml文件：<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
  <servlet>
    <servlet-name>action</servlet-name>
    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
    <init-param>
      <param-name>debug</param-name>
      <param-value>3</param-value>
    </init-param>
    <init-param>
      <param-name>detail</param-name>
      <param-value>3</param-value>
    </init-param>
    <load-on-startup>0</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
  
   <!-- The Usual Welcome File List -->
  <welcome-file-list>
    <welcome-file>hello.jsp</welcome-file>
  </welcome-file-list>  <!-- Struts Tag Library Descriptors -->
  <jsp-config> 
<taglib>
    <taglib-uri>/WEB-INF/struts-bean.tld</taglib-uri>
    <taglib-location>/WEB-INF/struts-bean.tld</taglib-location>
  </taglib>

  <taglib>
    <taglib-uri>/WEB-INF/struts-html.tld</taglib-uri>
    <taglib-location>/WEB-INF/struts-html.tld</taglib-location>
  </taglib>

  <taglib>
    <taglib-uri>/WEB-INF/struts-logic.tld</taglib-uri>
    <taglib-location>/WEB-INF/struts-logic.tld</taglib-location>
  </taglib>
  </jsp-config>
</web-app>错误页面：org.apache.jasper.JasperException: /hello.jsp(24,0) Attribute propert invalid for tag write according to TLD
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)
org.apache.struts.action.RequestProcessor.internalModuleRelativeForward(RequestProcessor.java:1012)
org.apache.struts.action.RequestProcessor.processValidate(RequestProcessor.java:980)
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:255)
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)请高手给解决一下 50分赠送！