学习内容
所花时间：2小时
代码量：如下：
博客量：本学期截至目前39篇
了解到的知识点：分页查询
在今天我学会了分页查询的操作：
以下是部分代码：
index.jsp
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page import="java.util.ArrayList" %>
<%@ page import="bean.policy" %><%--
Created by IntelliJ IDEA.
User: Lenovo
Date: 2023/4/10
Time: 15:19
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>Title</title>
</head>
<body>
<center>
<img src="LOGO.png">
</center>
<%
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
Object message=request.getAttribute("message");
if(message!=null)
{
%>
<script language="JavaScript">alert("<%=message%>")</script>
<%
}
ArrayList<policy> policies= (ArrayList<policy>) request.getAttribute("policies");
if(policies==null){
%>
<form action="Servlet?method=suoyou" method="post">
<input type="submit" value="查询">
</form>
<%
}
else if(policies!=null){
%>
<center>
<form action="Servlet?method=chadata" method="post">
政策名称:<input type="text" name="name" placeholder="请输入政策名称" style="border: none">
发文字号:<input type="text" name="document" placeholder="请输入发文字号" style="border: none">
发文机构:<input type="text" name="organ" placeholder="请输入发文机构" style="border: none">
全文检索:<input type="text" name="data" style="border: none">
<input type="submit" value="搜索">
</form>
<br>
<br>
<table border="1" cellspacing="0">
<th width="10%">id</th><th width="20%">政策名称</th><th width="20%">发文机构</th><th width="20%">颁布日期</th><th width="20%">政策分类</th><th width="10%">操作</th>
<c:forEach items="${policies}" var="item">
<tr>
<td>${item.id}</td>
<td>${item.name}</td>
<td>${item.organ}</td>
<td>${item.pubdata}</td>
<td>${item.type}</td>
<td><a href="Servlet?method=chakan&id=${item.id}" style="text-decoration: none">查看</a> </td>
</tr>
</c:forEach>
</table>
<br>
共${sum}条记录，当前第${cpage}/${tpage}页
<%
String dd= request.getAttribute("dd").toString();
if(Integer.parseInt(request.getAttribute("sum").toString())<10){
} else if(dd.equals("d")){%>
<a href="Servlet?method=suoyou&cp=1">首页</a>
<a href="Servlet?method=suoyou&cp=${cpage-1<=0?1:cpage-1}">上一页</a>
<a href="Servlet?method=suoyou&cp=${cpage+1>=tpage?tpage:cpage+1}">下一页</a>
<a href="Servlet?method=suoyou&cp=${tpage}">尾页</a>
<%
}
else if(dd.equals("dd")){%>
<a href="Servlet?method=chadata&cp=1&name=<%=request.getAttribute("name")%>&document=<%=request.getAttribute("document")%>&organ=<%=request.getAttribute("organ")%>">首页</a>
<a href="Servlet?method=chadata&cp=${cpage-1<=0?1:cpage-1}&name=<%=request.getAttribute("name")%>&document=<%=request.getAttribute("document")%>&organ=<%=request.getAttribute("organ")%>">上一页</a>
<a href="Servlet?method=chadata&cp=${cpage+1>=tpage?tpage:cpage+1}&name=<%=request.getAttribute("name")%>&document=<%=request.getAttribute("document")%>&organ=<%=request.getAttribute("organ")%>">下一页</a>
<a href="Servlet?method=chadata&cp=${tpage}&name=<%=request.getAttribute("name")%>&document=<%=request.getAttribute("document")%>&organ=<%=request.getAttribute("organ")%>">尾页</a>
<%
}
%>
</center>
<%
}
%>
</body>
</html>
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