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Paging program implemented with JSP

Source: Internet
Author: User
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<% @ Page contentType = "text/html; charset = UTF-8" %>

<% @ Page import = "java. SQL. *" %>

<% @ Page import = "java. io. *" %>

<Title> Jsp page display record </title> <body bgcolor = "# ffffff">

<%

// Variable Declaration

Connection sqlCon; // database Connection object

Statement sqlStmt; // SQL Statement object

ResultSet sqlRst; // result set object

String strCon; // database connection String

String strSQL; // SQL statement

Int intPageSize; // number of records displayed on one page

Int intRowCount; // The total number of records.

Int intPageCount; // the total number of pages.

Int intPage; // the page number to be displayed.

String strPage;

Int I;

// Set the number of records displayed on one page

IntPageSize = 5;

// Obtain the page number to be displayed

StrPage = request. getParameter ("page ");

If (strPage = null) {// indicates that the page parameter is not found in QueryString. the first page of data is displayed.

IntPage = 1;

}

Else {// convert a string to an integer

IntPage = Integer. parseInt (strPage );

If (intPage <1) intPage = 1;

}

// Load the JDBC driver

Try {

Class. forName ("com. mysql. jdbc. Driver ");

}

Catch (ClassNotFoundException e) {out. print ("loading driver error ");}

 
// Set the database connection string

StrCon = "jdbc: mysql: // localhost: 3306/test ";;

// Connect to the database

SqlCon = DriverManager. getConnection (strCon, "test", "test ");

// Create a read-only SQL statement object that can be rolled

SqlStmt = sqlCon. createStatement (ResultSet. TYPE_SCROLL_INSENSITIVE, ResultSet. CONCUR_READ_ONLY );

// Prepare SQL statements

StrSQL = "select * from account ";

// Execute the SQL statement and obtain the result set

SqlRst = sqlStmt.exe cuteQuery (strSQL );

// Obtain the total number of records

SqlRst. last ();

IntRowCount = sqlRst. getRow ();

// Calculate the total number of pages

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

// Adjust the page number to be displayed

If (intPage> intPageCount) intPage = intPageCount;

%>

<Html>

<Head>

<Meta http-equiv = "Content-Type" content = "text/html; charset = gb2312">

<Title> JSP database operation routine-data paging-JDBC 2.0-MYSQL </title>

</Head>

<Body>

<Table border = "1" cellspacing = "0" cellpadding = "0">

<Tr>

<TH> id </Th>

<TH> name </Th>

<TH> password </Th>

 
</Tr>
<%

If (intpagecount> 0 ){

// Locate the record pointer to the first record on the page to be displayed.

Sqlrst. Absolute (intPage-1) * intpagesize + 1 );

// Display data

I = 0;

While (I <intpagesize &&! Sqlrst. isafterlast ()){

%>

<Tr>

<TD> <% = sqlrst. getstring (1) %> </TD>

<TD> <% = sqlrst. getstring (2) %> </TD>

<TD> <% = sqlrst. getstring (3) %> </TD>

 
</Tr>

<%

Sqlrst. Next ();

I ++;

}

}

%>

</Table>

 
Page <% = intpage %> total pages <% = intpagecount %> <br>
<A href = "fenye. jsp? Page = 1 "> page 1 </a>

<% IF (intpage> 1) {%> <a href = "fenye. jsp? Page = <% = intPage-1 %> "> previous page </a> <%} %>

<% IF (intpage <intpagecount) {%> <a href = "fenye. jsp? Page = <% = intpage + 1%> "> next page </a> <%} %>
<A href = "fenye. jsp? Page = <% = intpagecount %> "> last page </a>
 
 
</Body>

</Html>

<%

// Close the result set

Sqlrst. Close ();

// Close the SQL statement object

Sqlstmt. Close ();

// Close the database

Sqlcon. Close ();

%>

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