Runtime paging with java for the database values.

Question

I m preparing a project in which i cant try to page the data etracted from the database in runtime. Plz Help me for this problem.

Answer 1

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.DriverManager;
import java.util.List;
import java.util.ArrayList;
import java.util.StringTokenizer;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
public class AttachFormPagination extends Action
  public AttachFormPagination()
  public ActionForward execute(ActionMapping mapping, ActionForm actionForm, HttpServletRequest request, HttpServletResponse response) throws Exception
          try
               int tot = 0;
               String startIndex = request.getParameter("start");
               String endIndex = request.getParameter("end");
               System.out.println("---------start is>" + startIndex);
               System.out.println("---------end is>" + endIndex);
               int sIndex = Integer.valueOf(startIndex).intValue();
               int eIndex = Integer.valueOf(endIndex).intValue();
            Class.forName("org.gjt.mm.mysql.Driver");
               Connection con=DriverManager.getConnection("jdbc:mysql://localhost/","id","pw");
               Statement st = con.createStatement();
               // this is for getting the total records
               Statement st1 = con.createStatement();
               ResultSet rs1 = st1.executeQuery("select * from tablename");
               while(rs1.next())
                    tot++;
               System.out.println("total value is" + tot);
               String total = ""+tot;
               String query = "select * from tablename limit " + sIndex + "," + eIndex;
               System.out.println("---------query is>" + query);
               ResultSet rs = st.executeQuery(query);
               List cusList = new ArrayList();
               AttachFormBean afb = null;
               while(rs.next())
                    afb = new AttachFormBean();
                    afb.setName(rs.getString(1));
                    afb.setActivity(rs.getString(2));
                    afb.setProduct(rs.getString(3));
                    afb.setCompetitor(rs.getString(4));
                    afb.setEnvironment(rs.getString(5));
                    afb.setCreatedBy(rs.getString(6));
                    cusList.add(afb);
               request.setAttribute("custlist",cusList);
               request.setAttribute("startIndex",startIndex);
               request.setAttribute("endIndex",endIndex);
               request.setAttribute("total",total);
          catch (Exception e)
               System.out.println("Exception---------"+e);
          return mapping.findForward("success");
}and
this code to be placed in ur page
<table border="0" cellpadding="0" cellspacing="0" width="100%">
          <tr>
               <td align="left">�</td>
               <td nowrap align="right">
               <a href="#" onclick="PagenationStart()">
               <img src='images/start_off.gif' width='9' height='8' alt='Start'  border='0' align='absmiddle' href="#" >�Start��</a>
               <a href="#" onclick="PagenationPrevious()">
               <img src='images/previous_off.gif' width='4' height='8' alt='Previous'  border='0' align='absmiddle'>�Previous��</a>
               <a href="#" onclick="PagenationNext()">
               ��Next�<img src='images/next_off.gif' width='4' height='8' alt='Next'  border='0' align='absmiddle'></a>
               <a href="#" onclick="PagenationEnd()">
               ��End�<img src='images/end_off.gif' width='9' height='8' alt='End'  border='0' align='absmiddle'></a></td>
          </tr>
     </table>and put this in ur page inside script
function PagenationStart()
     var a = 0;
     var b = 4;
     document.ownerPage.action="actionpagename.do?param="+param+"&start="+a+"&end="+b;
     document.ownerPage.submit();
function PagenationPrevious()
     var a = eval('<c:out value="${requestScope.startIndex}"/>') - 4;
     var b = 4;
     document.ownerPage.action="actionpagename.do?param="+param+"&start="+a+"&end="+b;
     document.ownerPage.submit();
function PagenationNext()
     var a = eval('<c:out value="${requestScope.startIndex}"/>')+4;
     var b = 4;
     document.ownerPage.action="actionpagename.do?param="+param+"&start="+a+"&end="+b;
     document.ownerPage.submit();
function PagenationEnd()
     var a = eval('<c:out value="${requestScope.total}"/>')-4;
     var b = eval('<c:out value="${requestScope.total}"/>');
     document.ownerPage.action="actionpagename.do?param="+param+"&start="+a+"&end="+b;
     document.ownerPage.submit();
}