pageman.jsp

实现图书的借阅和管理信息化

<%@ page language="java" contentType="text/html; charset=GBK"%>

<%@ 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"%>
<%@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles"%>
<%@ taglib uri="http://jsptags.com/tags/navigation/pager" prefix="pg"%>
<%@ taglib uri="http://java.sun.com/jstl/core_rt" prefix="c"%>

<script type="text/javascript">
		function changePageSize()
		{
			var newPS = document.getElementById("pS");
			var newPage = document.getElementById("newPage");
			var action = document.forms[0].action;
			action += "?pager.offset="+(newPage.value-1)*newPS.value+"&pS="+newPS.value+"&currPage="+newPage.value;
			if(checkPageAndSize()){
				document.forms[0].action = action;
				document.forms[0].submit();
			}
		}
		function sub(url)
		{
			var newPS = document.getElementById("pS");
			var newPage = document.getElementById("newPage");
			url+="&pS="+newPS.value;			
			document.forms[0].action = url;
			document.forms[0].submit();
		}
		function checkPageAndSize()
		{
			var newPS = document.getElementById("pS");
			var newPage = document.getElementById("newPage");
			if(isNaN(newPS.value))
			{
				alert("请输入数字!");
				return false;
			}	
			if(newPS.value > ${totalRows})
			{
				alert("输入的行数大于实际的行数!");
				return false;
			}
			var total=${totalRows};
			var pageOfSize=newPS.value;
			var tot =Number(total)+Number(pageOfSize);
			var totalPage = (tot-1)/newPS.value;
			if(newPage.value > totalPage)
			{
				alert("输入页数大于实际的页数!");
				return false;
			}
			return true;
		}
	</script>

<pg:index>
	<pg:page>
							当前第${pageNumber }页
						</pg:page>
	<pg:first>
		<c:choose>
			<c:when test="${pageNumber eq currentPageNumber}">
									首页
								</c:when>
			<c:when test="${pageNumber ne currentPageNumber}">
				<a href="javascript:sub('${pageUrl}&currPage=${pageNumber}')">首页</a>
			</c:when>
		</c:choose>
	</pg:first>
	<pg:prev ifnull="true">
		<c:choose>
			<c:when test="${pageUrl eq null}">
									前页
								</c:when>
			<c:when test="${pageUrl ne null}">
				<a href="javascript:sub('${pageUrl}&currPage=${pageNumber}')">前页</a>
			</c:when>
		</c:choose>
	</pg:prev>
	<pg:next ifnull="true">
		<c:choose>
			<c:when test="${pageUrl eq null}">
									${pageUrl }
									后页
								</c:when>
			<c:when test="${pageUrl ne null}">
				<a href="javascript:sub('${pageUrl}&currPage=${pageNumber}')">后页</a>
			</c:when>
		</c:choose>
	</pg:next>
	<pg:last>
		<c:choose>
			<c:when test="${pageNumber eq currentPageNumber}">
									尾页
								</c:when>
			<c:when test="${pageNumber ne currentPageNumber}">
				<a href="javascript:sub('${pageUrl}&currPage=${pageNumber}')">尾页</a>
			</c:when>
		</c:choose>
	</pg:last>
	
						第
						<input type="text" class="text" id="newPage" size="2"
		value="${currentPageNumber}" />
						页
						每页
						<input type="text" id="pS" class="text" size="2"
		value="${pageSize }" />
						行
						<input type="button" onclick="changePageSize();" class="button"
		value="go" />
</pg:index>