JSP數(shù)據(jù)庫操數(shù)據(jù)分頁顯示
2020-06-01 23:30:20
供稿：網(wǎng)友
<%@ page contentType="text/html;charset=8859_1" %>
<%
//變量聲明
java.sql.Connection sqlCon; //數(shù)據(jù)庫連接對象
java.sql.Statement sqlStmt; //SQL語句對象
java.sql.ResultSet sqlRst; //結果集對象
java.lang.String strCon; //數(shù)據(jù)庫連接字符串
java.lang.String strSQL; //SQL語句
int intPageSize; //一頁顯示的記錄數(shù)
int intRowCount; //記錄總數(shù)
int intPageCount; //總頁數(shù)
int intPage; //待顯示頁碼
java.lang.String strPage;
int i;
//設置一頁顯示的記錄數(shù)
intPageSize = 2;
//取得待顯示頁碼
strPage = request.getParameter("page");
if(strPage==null){//表明在QueryString中沒有page這一個參數(shù)，此時顯示第一頁數(shù)據(jù)
intPage = 1;
}
else{//將字符串轉換成整型
intPage = java.lang.Integer.parseInt(strPage);
if(intPage<1) intPage = 1;
}
//裝載JDBC驅(qū)動程序
java.sql.DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
//設置數(shù)據(jù)庫連接字符串
strCon = "jdbc:oracle:thin:@linux:1521:ora4cweb";
//連接數(shù)據(jù)庫
sqlCon = java.sql.DriverManager.getConnection(strCon,"hzq","hzq");
//創(chuàng)建一個可以滾動的只讀的SQL語句對象
sqlStmt = sqlCon.createStatement(java.sql.ResultSet.TYPE_SCROLL_INSENSITIVE,java.sql.ResultSet.CONCUR_READ_ONLY);
//準備SQL語句
strSQL = "select name,age from test";
//執(zhí)行SQL語句并獲取結果集
sqlRst = sqlStmt.executeQuery(strSQL);
//獲取記錄總數(shù)
sqlRst.last();
intRowCount = sqlRst.getRow();
//記算總頁數(shù)
intPageCount = (intRowCount+intPageSize-1) / intPageSize;
//調(diào)整待顯示的頁碼
if(intPage>intPageCount) intPage = intPageCount;
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>JSP數(shù)據(jù)庫操作例程 - 數(shù)據(jù)分頁顯示 - JDBC 2.0 - Oracle</title>
</head>
<body>
<table border="1" cellspacing="0" cellpadding="0">
<tr>
<th>姓名</th>
<th>年齡</th>
</tr>
<%
if(intPageCount>0){
//將記錄指針定位到待顯示頁的第一條記錄上
sqlRst.absolute((intPage-1) * intPageSize + 1);
//顯示數(shù)據(jù)
i = 0;
while(i<intPageSize && !sqlRst.isAfterLast()){
%>
<tr>
<td><%=sqlRst.getString(1)%></td>
<td><%=sqlRst.getString(2)%></td>
</tr>
<%
sqlRst.next();
i++;
}
}
%>
</table>
第<%=intPage%>頁 共<%=intPageCount%>頁 <%if(intPage<intPageCount){%><a href="jdbc20-oracle.jsp?page=<%=intPage+1%>">下一頁</a><%}%> <%if(intPage>1){%><a href="jdbc20-oracle.jsp?page=<%=intPage-1%>">上一頁</a><%}%>
