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javax.servlet.jsp.JspException:无法在任何范围内找到 bean:“部门”

JSP PAGE
<%-- 
    Document   : DeptListing
    Created on : 20-Aug-2011, 10:12:36
    Author     : LenasalonM01
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<%@taglib uri="http://struts.apache.org/tags-bean" prefix="bean"%>
<%@taglib uri="http://struts.apache.org/tags-html" prefix="html"%>
<%@taglib uri="http://struts.apache.org/tags-logic" prefix="logic"%>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Department listing</title>
    </head>
    <body>
        <%-- <jsp:include page="Header.jsp">
            <jsp:param name="header" value="Dept Listing"/>
</jsp:include>--%>
        <table>
            <logic:iterate id="dept" name="departments">
                <tr>
                    <td>
                        <bean:write name="dept" property="name" />
                    </td>
                    <td>
                        <html:link page="/listEmployees.do"
                                   paramId="deptid" paramName="dept"
                                   paramProperty="id">
                            show
                        </html:link>
                    </td>
                </tr>
            </logic:iterate>
        </table>
        <%@include file="/Footer.jsp" %>
    </body> …
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