java.lang.NoSuchMethodException: Action[/main] does not contain specified method

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic"%>

<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean"%>

<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html"%>

<%@ taglib uri="http://displaytag.sf.net" prefix="display" %>



<%

	String path = request.getContextPath();

	String basePath = request.getScheme() + "://"

			+ request.getServerName() + ":" + request.getServerPort()

			+ path + "/";

%>



<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

	<head>

		<base href="<%=basePath%>">



		<title>My JSP 'showlist.jsp' starting page</title>

		<meta http-equiv="Content-Type" content="text/html; charset=gb2312">

		<link rel="stylesheet" href="CSS/table.css" type="text/css">

		<meta http-equiv="pragma" content="no-cache">

		<meta http-equiv="cache-control" content="no-cache">

		<meta http-equiv="expires" content="0">

		<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">

		<meta http-equiv="description" content="This is my page">



		<script type="text/javascript" src="dwr/engine.js"></script>

		<script type="text/javascript" src="dwr/util.js"></script>

		<script type="text/javascript" src="dwr/interface/service.js"></script>



		<script type="text/javascript" src="js/comm.js"></script>

		<style>   

		  .mouseover   {   

		  background-color:   #FFFFFF;   

		  }   

		  .mouseout   {   

		  background-color:   #AAAAAA;   

		  }   

		 </style>

		<script type="text/javascript">

			function toAdd(){

				document.forms[0].action+="?method=toAdd";

				document.forms[0].submit();

			}

			function dolist(){

				document.forms[0].action+="?method=dolist";

				document.forms[0].submit();

			}

			function toDel(id)

			{

				document.forms[0].action+="?method=toDelete&id="+id;

				document.forms[0].submit();

			}

			function toUpdate(id)

			{

				document.forms[0].action+="?method=toUpdate&id="+id;

				document.forms[0].submit();

			}

			function   mouseover(id)   

			{   

			    id.className   =   "mouseover";   

			}   

			function   mouseout(id)   

			{   

			    id.className   =   "mouseout";   

			}   

		</script>

	</head>



	



	<body>

		<form method="post" action="main.do">

		   

			<!--  -->

			<table width="100%">

				<tr>

					<td>

						<font color="#0000CC">您正在做的业务是：数 据</font>

					</td>

				</tr>

		</table>

					<tr>

						<td>

							<select name="hdCorporation" 

								style="SELECT_STYLE2">

								<option value="1">--公司--</option>

									<logic:iterate name="pb" id="list" property="currentList">

								<option value="2">

											${list.corporation.corporationName}

									</logic:iterate>

							</select>

						</td>

					</tr>

					<tr>

						<td>件  号：<input type="text" name="hdmainArticleId"></td>

						<td>章节号：<input type="text" name="hdmainAta"></td>

					</tr>

						<td><input type="button" value="添加" onclick="javascript:toAdd();"></input></td>

						<td><input type="button" value="查询" onclick="javascript:dolist();"></input></td>

					

			<table width="100%" border="1" cellpadding=0 cellspacing=1

				bordercolorlight=#848284 bordercolordark=#eeeee class="TABLE_STYLE1">

				

				<tr align="center">

					<td width="8%" class="TD_STYLE1">公司名称</td>

					<td width="8%" class="TD_STYLE1">ATA章节号</td>

					<td width="12%" class="TD_STYLE1">件号</td>

					<td width="8%" class="TD_STYLE1">测试（工时）</td>

					<td width="8%" class="TD_STYLE1">修理（工时）</td>

					<td width="8%" class="TD_STYLE1">翻修（工时）</td>

					<td width="8%" class="TD_STYLE1">修理（固定）</td>

					<td width="8%" class="TD_STYLE1">翻修（固定）</td>

					<td width="8%" class="TD_STYLE1">保修期</td>

					<td width="8%" class="TD_STYLE1">周期</td>

					<td width="8%" class="TD_STYLE1">报价日期</td>

					<td width="8%" class="TD_STYLE1">操作</td>

				</tr>



				

				<logic:iterate name="pb" id="list" property="currentList">

					<tr align="center" class="TD_STYLE2">	

						<td>${list.corporation.corporationName}</td>

						<td>${list.articleId.articleIdAta}</td>

						<td>${list.articleId.articleIdName}</td>

						<td>${list.mainManhourTest}</td>

						<td>${list.mainManhourRepair}</td>

						<td>${list.mainManhourOverhaul}</td>

						<td>${list.mainImmobilityRepair}</td>

						<td>${list.mainImmobilityOverhaul}</td>

						<td>${list.mainWarrantyTime}</td>

						<td>${list.mainCycle}</td>

						<td>${list.hddate.dateData}</td>

						<td>

							<a href="javascript:toUpdate('${list.mainId}');">更新</a>

							<a href="javascript:toDel('${list.mainId}');">删除</a>

						</td>

					</tr>

				</logic:iterate>



			</table>



			<table align="center" class="TD_STYLE9">

				<tr>

					<td>

						总记录数${pb.allRecord}条记录，总页数有${pb.allPage}页，当前是${pb.currentPage}页

						从第${pb.first+1}条记录到第${pb.last+1}条记录

					</td>

				</tr>

				<tr>

					<td>

						<logic:equal value="1" name="pb" property="currentPage">

			   	 首页 上一页

			    </logic:equal>

						<logic:greaterThan value="1" name="pb" property="currentPage">

							<a href="main.do?page=1">首页</a>

							<a href="main.do?page=${pb.currentPage-1}">上一页</a>

						</logic:greaterThan>

						<logic:equal value="${pb.allPage}" name="pb"

							property="currentPage">

			    下一页 尾页

			    </logic:equal>

						<logic:lessThan value="${pb.allPage}" name="pb"

							property="currentPage">

							<a href="main.do?method&list=${pb.currentPage+1}">下一页</a>

							<a href="main.do?method&list=${pb.allPage}">尾页</a>

						</logic:lessThan>

						

							<input type="text" name="page" size="2">

							<input type="submit" value="转到">



							<a href="index.jsp">返回</a>

					</td>

				</tr>

			</table>



		</form>

	</body>

	

</html>

action 里的
public ActionForward list(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response) {
// TODO Auto-generated method stub
System.out.println("aaaaaaaaaaaaaaaa");
String scp = request.getParameter("page");
HdmainForm hf = (HdmainForm)form;
//因为JSP使用的DISPLAY标签的中文标签d-1773-p，替代了以前的page
PageBean pb = new PageBean();
pb.setAllRecord(hdmainBiz.count(hf));
pb.count(scp);
pb.setCurrentList(hdmainBiz.query(pb.getFirst(), pb.getSize(),hf));
request.setAttribute("pb", pb);
return mapping.findForward("showlist");
}

uitl下 有这个PageBean的 方法

一点下一页就出错，应该是页面上的下一页路径问题,但是我看了半天感觉没有错误