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I have sorted out a classic paging program (JSP)

Source: Internet
Author: User
Tags mysql
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js| Program | pagination

<%
Variable declaration
Java.sql.Connection Sqlcon; Database Connection objects
Java.sql.Statement sqlstmt; SQL Statement Object
Java.sql.ResultSet Sqlrst; Result set Object

Java.lang.String Strcon; Database connection string
Java.lang.String strSQL; SQL statement

int intpagesize; Number of records displayed on one page
int introwcount; Total Records
int intpagecount; Total pages
int intpage; Page number to display
int layer;
int idlayer;
Idlayer=1;
Java.lang.String Outtext;
Outtext= "";
Java.lang.String strpage;
Int J;
int i;


Set the number of records to display on a page
Intpagesize = 10;

Get the number to display
Strpage = request.getparameter ("page");
if (strpage==null) {//indicates that there is no page this parameter in QueryString, the first page data is now displayed
Intpage = 1;
}
else{//converts a string to an integral type
Intpage = Java.lang.Integer.parseInt (strpage);
if (intpage<1) intpage = 1;
}

Load JDBC Driver
Class.forName ("Org.gjt.mm.mysql.Driver"). newinstance ();

Connecting to a database
Sqlcon = Java.sql.DriverManager.getConnection ("jdbc:mysql://218.22.156.3/kjeny_db", "Kjeny", "cdgame");

To create a statement object
sqlstmt = Sqlcon.createstatement (java.sql.resultset.type_scroll_insensitive,java.sql.resultset.concur_read_only) ;

Execute the SQL statement and get the result set
Sqlrst = Sqlstmt.executequery ("SELECT * from Dxswlxh");


Get Total Records
Sqlrst.last ();
Introwcount = Sqlrst.getrow ();

Count Total Pages
Intpagecount = (introwcount+intpagesize-1)/intpagesize;

Adjust the number of pages to be displayed
if (intpage>intpagecount) intpage = Intpagecount;
%>

<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) < 0x80) {
ibytelen++;
} else {
Ibytelen + 2;
}
}
}
return Ibytelen;
}
</script>
<body topmargin= "0" leftmargin= "0" bgcolor=ccffcc>


<table width= "100%" ><tr><td bgcolor= "ff66cc" >
>> pagination
<form method=post action= "pink.jsp?page=1" target=ttop>
<input type=submit value= "Home" >
</form>
<%if (intpage>1) {
%>
<form method=post action= "pink.jsp?page=<%=intpage-1%>" target=ttop>
<input type=submit value= Previous page >
</form>

<%}%>

<%if (Intpage<intpagecount)
{%>

<form method=post action= "pink.jsp?page=<%=intpage+1%>" target=ttop>
<input type=submit value= Next page >
</form>
<%}%>
<form method=post action= "pink.jsp?page=<%=intpagecount%>" target=ttop>
<input type=submit value= "Last" >
</form>


Page:<%=intpage%>/<%=intpagecount%> page <%=intPageSize%> article/page

</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>

<%
Close result set
Sqlrst.close ();

Close an SQL statement object
Sqlstmt.close ();

Close Database
Sqlcon.close ();
%>



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