📄 list_person_sp.jsp
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<%@ page contentType="text/html;charset=gb2312"%>
<%@ page import="java.sql.*"%>
<html>
<head>
<title>分页显示</title>
</head>
<body>
<center>
<h1>人员列表</h1>
<hr>
<br>
<%--
本程序先做不带查询的部分
之后再讲解带查询部分
--%>
<%
// 进行乱码处理
request.setCharacterEncoding("GB2312") ;
%>
<%!
final String jspUrl = "list_person_sp.jsp" ;
%>
<%
// 定义如下分页变量
// 1、定义没页要显示的记录数
int lineSize = 10 ;
// 2、定义一个当前是第几页
int currentPage = 1 ;
// 计算出总页数
int pageSize = 0 ;
// 总记录数 / 每页显示的记录数
int allRecorders = 0 ;
// 加入查询关键字变量
String keyWord = null ;
%>
<%
// 接收查询关键字
keyWord = request.getParameter("kw") ;
// 接收传过来的当前页
try
{
currentPage = Integer.parseInt(request.getParameter("cp")) ;
}
catch(Exception e)
{}
%>
<%
final String DBDRIVER = "org.gjt.mm.mysql.Driver" ;
final String DBURL = "jdbc:mysql://localhost/mldn" ;
final String DBUSER = "root" ;
final String DBPASSWORD = "mysqladmin" ;
Connection conn = null ;
%>
<%
try
{
Class.forName(DBDRIVER) ;
conn = DriverManager.getConnection(DBURL,DBUSER,DBPASSWORD) ;
PreparedStatement pstmt = null ;
String sql = null ;
if(keyWord==null||"".equals(keyWord))
{
// 如果为空则没有查询，表示查询出全部
sql = "SELECT COUNT(id) from person" ;
}
else
{
sql = "SELECT COUNT(id) from person WHERE uid LIKE ? OR name LIKE ?" ;
}
// System.out.println(sql) ;
pstmt = conn.prepareStatement(sql) ;
// 如果有查询关键字，则进行设置
if(!(keyWord==null||"".equals(keyWord)))
{
// System.out.println("--------------------") ;
pstmt.setString(1,"%"+keyWord+"%") ;
pstmt.setString(2,"%"+keyWord+"%") ;
}
ResultSet rs = pstmt.executeQuery() ;
if(rs.next())
{
allRecorders = rs.getInt(1) ;
}
rs.close() ;
pstmt.close() ;
// out.println("keyWord = "+keyWord) ;
if(keyWord==null||"".equals(keyWord))
{
sql = "SELECT id,uid,name,password FROM person limit "+(currentPage-1)*lineSize+","+lineSize ;
// out.println(sql) ;
}
else
{
sql = "SELECT id,uid,name,password FROM person WHERE uid LIKE ? OR name LIKE ? limit "+(currentPage-1)*lineSize+","+lineSize ;
}
pstmt = conn.prepareStatement(sql) ;
if(!(keyWord==null||"".equals(keyWord)))
{
pstmt.setString(1,"%"+keyWord+"%") ;
pstmt.setString(2,"%"+keyWord+"%") ;
}
rs = pstmt.executeQuery() ;
%>
<jsp:include page="split_page.jsp">
<jsp:param name="jspUrl" value="<%=jspUrl%>"/>
<jsp:param name="lineSize" value="<%=lineSize%>"/>
<jsp:param name="allRecorders" value="<%=allRecorders%>"/>
<jsp:param name="keyWord" value="<%=keyWord%>"/>
<jsp:param name="currentPage" value="<%=currentPage%>"/>
<jsp:param name="searchFlag" value="T"/>
</jsp:include>
<table border="1" width="80%">
<tr>
<td>编号</td>
<td>登陆名称</td>
<td>姓名</td>
<td>密码</td>
<td colspan="2">操作</td>
</tr>
<%
int i = 0 ;
while(rs.next())
{
i++ ;
int id = rs.getInt(1) ;
String userid = rs.getString(2) ;
String name = rs.getString(3) ;
String password = rs.getString(4) ;
%>
<tr>
<td><%=id%></td>
<td><%=userid%></td>
<td><%=name%></td>
<td><%=password%></td>
<td>更新</td>
<td>删除</td>
</tr>
<%
}
rs.close() ;
pstmt.close() ;
if(i==0)
{
%>
<tr>
<td colspan="6">没有任何数据！！</td>
</tr>
<%
}
%>
</table>
<%
}
catch(Exception e)
{
out.println(e) ;
%>
<h2>系统出错！！！</h2>
<%
}
finally
{
conn.close() ;
}
%>
</center>
</body>
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