97 lines
3.1 KiB
Plaintext
97 lines
3.1 KiB
Plaintext
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<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
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<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
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<script type="text/javascript">
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function _go() {
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var pc = $("#pageCode").val();//获取文本框中的当前页码
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if(!/^[1-9]\d*$/.test(pc)) {//对当前页码进行整数校验
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alert('请输入正确的页码！');
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return;
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}
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if(pc > ${pb.tp}) {//判断当前页码是否大于最大页
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alert('请输入正确的页码！');
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return;
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}
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location = "${pb.url}&pc=" + pc;
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}
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</script>
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<div class="divBody">
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<div class="divContent">
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<%--上一页 --%>
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<c:choose>
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<c:when test="${pb.pc eq 1 }"><span class="spanBtnDisabled">上一页</span></c:when>
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<c:otherwise><a href="${pb.url }&pc=${pb.pc-1}" class="aBtn bold">上一页</a></c:otherwise>
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</c:choose>
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<%--我们需要计算页码列表的开始和结束位置，即两个变量begin和end
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计算它们需要通过当前页码！
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1. 总页数不足6页--> begin=1, end=最大页
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2. 通过公式设置begin和end，begin=当前页-1，end=当前页+3
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3. 如果begin<1，那么让begin=1，end=6
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4. 如果end>tp, 让begin=tp-5, end=tp
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--%>
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<c:choose>
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<c:when test="${pb.tp <= 6 }">
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<c:set var="begin" value="1"/>
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<c:set var="end" value="${pb.tp }"/>
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</c:when>
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<c:otherwise>
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<c:set var="begin" value="${pb.pc-2 }"/>
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<c:set var="end" value="${pb.pc + 3}"/>
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<c:if test="${begin < 1 }">
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<c:set var="begin" value="1"/>
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<c:set var="end" value="6"/>
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</c:if>
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<c:if test="${end > pb.tp }">
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<c:set var="begin" value="${pb.tp-5 }"/>
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<c:set var="end" value="${pb.tp }"/>
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</c:if>
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</c:otherwise>
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</c:choose>
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<c:forEach begin="${begin }" end="${end }" var="i">
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<c:choose>
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<c:when test="${i eq pb.pc }">
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<span class="spanBtnSelect">${i }</span>
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</c:when>
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<c:otherwise>
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<a href="${pb.url }&pc=${i}" class="aBtn">${i }</a>
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</c:otherwise>
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</c:choose>
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</c:forEach>
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<%-- 计算begin和end --%>
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<%-- 如果总页数<=6，那么显示所有页码，即begin=1 end=${pb.tp} --%>
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<%-- 设置begin=当前页码-2，end=当前页码+3 --%>
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<%-- 如果begin<1，那么让begin=1 end=6 --%>
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<%-- 如果end>最大页，那么begin=最大页-5 end=最大页 --%>
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<%-- 显示点点点 --%>
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<c:if test="${end < pb.tp }">
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<span class="spanApostrophe">...</span>
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</c:if>
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<%--下一页 --%>
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<c:choose>
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<c:when test="${pb.pc eq pb.tp }"><span class="spanBtnDisabled">下一页</span></c:when>
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<c:otherwise><a href="${pb.url }&pc=${pb.pc+1}" class="aBtn bold">下一页</a></c:otherwise>
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</c:choose>
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<%-- 共N页 到M页 --%>
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<span>共${pb.tp }页</span>
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<span>到</span>
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<input type="text" class="inputPageCode" id="pageCode" value="${pb.pc }"/>
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<span>页</span>
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<a href="javascript:_go();" class="aSubmit">确定</a>
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</div>
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</div>
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