jsp to realize page paging function code
- 2021-11-30 01:06:13
- OfStack
Core code:
<%@ page contentType="text/html" pageEncoding="GB2312" language="java"%>
<%@ page import="java.sql.*"%>
<html>
<head>
<title>hello</title>
</head>
<body>
<table border="1" spacing="2">
<%!
public static final String DRIVER = "com.mysql.jdbc.Driver";
public static final String USER = "root";
public static final String PASS = "";
public static final String URL = "jdbc:mysql://localhost:3306/teachinfo";
public static final int PAGESIZE = 5;
int pageCount;
int curPage = 1;
%>
<%
//1 Page placement 5 A
String user = null;
String pass = null;
try{
Class.forName(DRIVER);
Connection con = DriverManager.getConnection(URL,USER,PASS);
String sql = "SELECT * FROM department";
PreparedStatement stat = con.prepareStatement(sql,ResultSet.TYPE_FORWARD_ONLY,ResultSet.CONCUR_READ_ONLY);
ResultSet rs = stat.executeQuery();
rs.last();
int size = rs.getRow();
pageCount = (size%PAGESIZE==0)?(size/PAGESIZE):(size/PAGESIZE+1);
String tmp = request.getParameter("curPage");
if(tmp==null){
tmp="1";
}
curPage = Integer.parseInt(tmp);
if(curPage>=pageCount) curPage = pageCount;
boolean flag = rs.absolute((curPage-1)*PAGESIZE+1);
out.println(curPage);// Output to the screen
int count = 0;
do{
if(count>=PAGESIZE)break;
int departmentid = rs.getInt(1);
String departmentname = rs.getString(2);
count++;
%>
<tr>
<td><%=departmentid%></td>
<td><%=departmentname%></td>
</tr>
<%
}while(rs.next());
con.close();
}
catch(Exception e){
}
%>
</table>
<a href = "fenye.jsp?curPage=1" > Home page </a>
<a href = "fenye.jsp?curPage=<%=curPage-1%>" > Upper 1 Page </a>
<a href = "fenye.jsp?curPage=<%=curPage+1%>" > Under 1 Page </a>
<a href = "fenye.jsp?curPage=<%=pageCount%>" > End page </a>
No. 1 <%=curPage%> Page / Altogether <%=pageCount%> Page
</body>
</html>I hope all friends like this code!