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用jsp和mysql实现分页
来源:互联网   发布日期:2016-03-01 10:49:17   浏览:1875次  

导读:<%//变量声明java.sql.Connection sqlCon; //数据库连接对象java.sql.Statement sqlStmt; //SQL语句对象java.sql.Re...

<%

//变量声明

java.sql.Connection sqlCon; //数据库连接对象

java.sql.Statement sqlStmt; //SQL语句对象

java.sql.ResultSet sqlRst; //结果集对象

java.lang.String strCon; //数据库连接字符串

java.lang.String strSQL; //SQL语句

int intPageSize; //一页显示的记录数

int intRowCount; //记录总数

int intPageCount; //总页数

int intPage; //待显示页码

int layer;

int idlayer;

idlayer=1;

java.lang.String outtext;

outtext=”";

java.lang.String strPage;

int j;

int i;

//设置一页显示的记录数

intPageSize = 10;

//取得待显示页码

strPage = request.getParameter(”page”);

if(strPage==null){//表明在QueryString中没有page这一个参数,此时显示第一页数据

intPage = 1;

}

else{//将字符串转换成整型

intPage = java.lang.Integer.parseInt(strPage);

if(intPage<1) intPage = 1;

}

//装载JDBC驱动程序

Class.forName(”org.gjt.mm.mysql.Driver”).newInstance();

//连接数据库

sqlCon = java.sql.DriverManager.getConnection(”jdbc:mysql://218.22.156.3/kjeny_db”,”kjeny”,”cdgame”);

//创建语句对象

sqlStmt = sqlCon.createStatement(java.sql.ResultSet.TYPE_SCROLL_INSENSITIVE,java.sql.ResultSet.CONCUR_READ_ONLY);

//执行SQL语句并获取结果集

sqlRst = sqlStmt.executeQuery(”SELECT * FROM dxswlxh”);

//获取记录总数

sqlRst.last();

intRowCount = sqlRst.getRow();

//记算总页数

intPageCount = (intRowCount+intPageSize-1) / intPageSize;

//调整待显示的页码

if(intPage>intPageCount) intPage = intPageCount;

%>

<html>

<head>

<meta http-equiv=”Content-Type” content=”text/html; charset=gb2312″>

<base target=”contents”>

<LINK rel=”stylesheet” href=”css.css”>

<script language=”JavaScript”>

function byteLen(str) {

var iByteLen = 0;

if (str == null || str == “”) {

iByteLen = 0;

} else {

for (var i = 0; i < str.length; i++) {

if(str.charCodeAt(i) < 0×80) {

iByteLen++;

} else {

iByteLen += 2;

}

}

}

return iByteLen;

}

</script>

</head>

<body topmargin=”0″ leftmargin=”0″ bgcolor=ccffcc>

<table width=”100%”><tr><td bgcolor=”ff66cc”>

>> 分页

<form method=post action=”pink.jsp?page=1″ target=ttop>

<input type=submit value=”首 页”>

</form>

<%if(intPage>1){

%>

<form method=post action=”pink.jsp?page=<%=intPage-1%>” target=ttop>

<input type=submit value=上一页>

</form>

<%}%>

<%if(intPage<intPageCount)

{%>

<form method=post action=”pink.jsp?page=<%=intPage+1%>” target=ttop>

<input type=submit value=下一页>

</form>

<%}%>

<form method=post action=”pink.jsp?page=<%=intPageCount%>” target=ttop>

<input type=submit value=”尾 页”>

</form>

页次:<%=intPage%>/<%=intPageCount%>页 <%=intPageSize%>条/页

</td></tr></table>

<table>

<td width=”%100″><ul><%

if(intPageCount>0){

sqlRst.absolute((intPage-1) * intPageSize + 1);

i = 0;

while(i<intPageSize && !sqlRst.isAfterLast()){

String names = sqlRst.getString(3);

String use_xi = sqlRst.getString(4);

%>

<li><%=names%> - 【<%=use_xi%>】

<%

sqlRst.next();

i++;

}

}

%>

</ul></td></table>

</body>

</html>

<%

//关闭结果集

sqlRst.close();

//关闭SQL语句对象

sqlStmt.close();

//关闭数据库

sqlCon.close();

%>

——————If the resultset is empty, Resultset.last() will throw an error message. So before that we need to use Resultset.next() to judge if there are some results.

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