asked on

filtering in a table of data by using servlet and microsoft access

hi expert

this page get a list of books from the database ,when you press the button search you will get a list of books from the microsoft access databse ,
i want to add a search featuer which is make the user search by a ISBN or Title by adding two text boxs , in the first if the user press the search button without enter any things in this two text boxs the page will show a list of all books , but if the user enter some ISBN in the ISBN text box the page will show the book who have this ISBN , and if the user enter a title in the title text box the page will show the books that have this title , how i can do this ,i am new in servlet and jsp , i want to make this by servlet , i did this

import java.io.*;
import java.net.*;
import java.sql.ResultSetMetaData;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.Collections;

import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;

/**
*
* @author amohammad
* @version
*/
public class ShowBooks extends HttpServlet {

/** Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
* @param request servlet request
* @param response servlet response
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();

out.write("<script language=\"JavaScript\">\n");
out.write(" function getIsbn() { \n" +

" document.forms(1).submit();\n" +
" \n" +
" }");
out.write("</script>\n");

out.println("<html>");
out.println("<head>");
out.println("<title>Servlet ShowBooks</title>");
out.println("</head>");
out.println("<body>");
out.print(" <input type='hidden' name='isbn'/> ");
out.print(" <input type='hidden' name='title'/> ");
out.print(" <input type='hidden' name='userid'/> ");
out.print(" <input type='hidden' name='quantity'/> ");

out.println(" <input type=\"submit\" name=\"srch\" size=\"60\" value=\"Search Book\"/>");
out.println(" Title <input type=\"text\" name=\"titleSrc\" />");
out.println(" ISBN <input type=\"text\" name=\"ISBNSrc\" />");

out.println("<TABLE BORDER=1>");
ArrayList ar = new ArrayList();
try {

Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

Connection connection = DriverManager.getConnection("jdbc:odbc:books","","");
Statement statement = connection.createStatement();

ResultSet results = statement.executeQuery("select * from books;");

ResultSetMetaData resultsMetaData =
results.getMetaData();
int columnCount = resultsMetaData.getColumnCount();

out.println("<TR>");
for(int i=1; i<columnCount+1; i++) {
out.println("<TH>" +
resultsMetaData.getColumnName(i) ) ;
}
out.println("<TH> Quantity </TH>");
out.println("<TH> BUY </TH>");
while( results.next() ) {

out.println("<TR>");
int f = 0;
out.println("<form name=\"fm"+f+"\" action=\"ShowBooks\" method=\"Post\">");
for(int i=1; i<columnCount+1; i++) {
String gg = results.getString(i);
ar.add(gg);

out.print("<TD>" + gg + "<input type=\"hidden\" name=\"par\" value="+ gg + "/>/></TD>" );

}

out.print("<TD> <input type=\"text\" name=\"par\" /> </TD>");
out.print("<TD> <input type=\"submit\" name=\"buy \" size=\"60\" value=\" BUY\" /> </TD>");

out.println("</form>");
f=f+1 ;

}
out.println("<form name=\"fmo\" action=\"ShowBooks\" method=\"Post\">");

out.println("</form>");

statement.close();
results.close();
connection.close();
}

catch (Exception e) {
System.out.println(e);

}

out.println("</TABLE>");

out.println("</body>");
out.println("</html>");

out.close();
}

// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
/** Handles the HTTP <code>GET</code> method.
* @param request servlet request
* @param response servlet response
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();

out.println("<html>");
out.println("<head>");
out.println("<title>Servlet ShowBooks</title>");
out.println("</head>");
out.println("<body>");
out.println("<form name=\"fm\" action=\"ShowBooks\" method=\"Post\">\n" +
" <table cellspacing=\"3\" cellpadding=\"2\" border=\"1\" width=\"100%\">\n" +
" <tr>\n" );

out.println(" <input type=\"submit\" name=\"srch\" size=\"60\" value=\"Search Book\"/>");
out.println(" Title <input type=\"text\" name=\"titleSrc\" />");
out.println(" ISBN <input type=\"text\" name=\"ISBNSrc\" />");

out.println("</form>");
out.println("</body>");
out.println("</html>");

}

/** Handles the HTTP <code>POST</code> method.
* @param request servlet request
* @param response servlet response
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

Enumeration paramNames = request.getParameterNames();
while(paramNames.hasMoreElements()) {
String paramName = (String)paramNames.nextElement();

String[] paramValues =
request.getParameterValues(paramName);
if (paramValues.length == 1) {
String paramValue = paramValues[0];

}
else
{

String Title = paramValues[0] ;
String ISBN = paramValues[1] ;
String Publisher_Id = paramValues[2] ;
String URL = paramValues[3] ;
String Price = paramValues[4] ;
String Quantity = paramValues[5] ;
String user = (String) request.getSession().getAttribute("userName") ;

if (Quantity==null || Quantity.equals(""))
{
Quantity = "0";
}

DataBaseMethod db = new DataBaseMethod();

db.insertNewOrder(user,Integer.parseInt(Quantity) ,ISBN ) ;

response.sendRedirect("FinalServlet");

}

}

processRequest(request, response);

}

}

this servlet show a list of all books without filtering on ISBN or Title , i just but a text box to ISBN and Title without filtering ,
please please help me i wait from any experts who can help me by sending a code to do this .

thank you very very very very very very very very very very much

ASKER CERTIFIED SOLUTION

Kuldeepchaturvedi

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