G01/out/artifacts/TestServlet09_war_exploded/pages/common/page_nav.jsp

<%--
  Created by IntelliJ IDEA.
  User: x'b'w
  Date: 2021/6/27
  Time: 20:06
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>

<%--		分页开始--%>
<div id="page_nav">
    <c:if test="${requestScope.page.pageNo >1}">
        <a href="${requestScope.page.url}&pageNo=1">首页</a>
        <a href="${requestScope.page.url}&pageNo=${requestScope.page.pageNo-1}">上一页</a>
    </c:if>
    <%--页码输出的开始--%>
    <c:choose>
        <%--情况 1：如果总页码小于等于 5 的情况，页码的范围是：1-总页码--%>
        <c:when test="${ requestScope.page.pageTotal <= 5 }">
            <c:set var="begin" value="1"/>
            <c:set var="end" value="${requestScope.page.pageTotal}"/>
        </c:when>
        <%--情况 2：总页码大于 5 的情况--%>
        <c:when test="${requestScope.page.pageTotal > 5}">
            <c:choose>
                <%--小情况 1：当前页码为前面 3 个：1，2，3 的情况，页码范围是：1-5.--%>
                <c:when test="${requestScope.page.pageNo <= 3}">
                    <c:set var="begin" value="1"/>
                    <c:set var="end" value="5"/>
                </c:when>
                <%--小情况 2：当前页码为最后 3 个，8，9，10，页码范围是：总页码减 4 - 总页码--%>
                <c:when test="${requestScope.page.pageNo > requestScope.page.pageTotal-3}">
                    <c:set var="begin" value="${requestScope.page.pageTotal-4}"/>
                    <c:set var="end" value="${requestScope.page.pageTotal}"/>
                </c:when>
                <%--小情况 3：4，5，6，7，页码范围是：当前页码减 2 - 当前页码加 2--%>
                <c:otherwise><c:set var="begin" value="${requestScope.page.pageNo-2}"/>
                    <c:set var="end" value="${requestScope.page.pageNo+2}"/>
                </c:otherwise>
            </c:choose>
        </c:when>
    </c:choose>
    <c:forEach begin="${begin}" end="${end}" var="i">
        <c:if test="${i == requestScope.page.pageNo}">
            【${i}】
        </c:if>
        <c:if test="${i != requestScope.page.pageNo}">
            <a href="${requestScope.page.url}&pageNo=${i}">${i}</a>
        </c:if>
    </c:forEach>
    <%--页码输出的结束--%>


    <c:if test="${requestScope.page.pageNo < requestScope.page.pageTotal}">
        <a href="${requestScope.page.url}&pageNo=${requestScope.page.pageNo+1}">下一页</a>
        <a href="${requestScope.page.url}&pageNo=${requestScope.page.pageTotal}">末页</a>
    </c:if>

    共${requestScope.page.pageTotal}页，${requestScope.page.pageTotalCount}条记录
    到第<input value="${param.pageNo}" name="pn" id="pn_input"/>页
    <input id="searchPageBtn" type="button" value="确定">

    <script type="text/javascript">
        $(function (){
            //跳到指定页码
            $("#searchPageBtn").click(function (){
                var  pageNo = $("#pn_input").val();
                <%--var pageTotal = ${requestScope.page.pageTotal};--%>

                location.href="http://localhost:8089/TestServlet09_war_exploded/${requestScope.page.url}&pageNo=" + pageNo;
            });
        });


    </script>
</div>
<%--		分页介绍--%>