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displaying tables using sql

Posted on 2002-04-04
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Last Modified: 2013-11-24
i have this java servlet code ,it compiles ok,receives
the valu ok, but do not display the values of the table
whats wrong with the sql statment ???

import java.io.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.sql.*;

public class Training extends HttpServlet {
  public void doPost(HttpServletRequest req, HttpServletResponse res)
                                     throws ServletException, IOException {
 
         Connection con = null;          
         boolean logged = false;
         res.setContentType("text/html");
         PrintWriter out=res.getWriter();
       
       try {
       
            String strSQL, EmpID=null;
            ResultSet rs=null;
            Statement stmt;
           
            // get parameters passed from html
            EmpID = req.getParameter("userid");
               
            Class.forName ("sun.jdbc.odbc.JdbcOdbcDriver");
            con = DriverManager.getConnection("jdbc:odbc:db1");
            stmt = con.createStatement();
                out.println("<TABLE CELLSPACING=\"0\" CELLPADDING=\"6\" BORDER=\"1\">");                                                                              
             out.println("<TR><TD>EmpNO.</TD><TD>Course Name</TD><TD>Start Date</TD><TD>End Date</TD><TD>Place</TD></TR>");                      
             
            strSQL = "select * from Training" +
                 "where EMPNO like '"+ EmpID + "'";
            rs = stmt.executeQuery(strSQL);
                 
           
                while(rs.next())                                                      
         {                                                                      
           out.println("<TR>");                                                              
           out.println("<TD>" + rs.getString("EmpNO") + "</TD>");              
            out.println("<TD>" + rs.getString("Course_name") + "</TD>");
             out.println("<TD>" + rs.getString("Start_date") + "</TD>");
           out.println("<TD>" + rs.getString("End_date") + "</TD>");
            out.println("<TD>" + rs.getString("Place") + "</TD>");
           out.println("</TR>");                                              
        }                                    
              rs.close();
               stmt.close();

       } catch (Exception e)
         {
           e.printStackTrace();
       }
         finally
         {
            if (con != null)
               {
                 try
                     {
                      con.close();
                 } catch (SQLException se) {
                      se.printStackTrace(System.err);
                 }
            }
       }
         
  }    

}
0
Comment
Question by:star5
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  • 2
4 Comments
 
LVL 4

Expert Comment

by:pellep
ID: 6919608
try changing
strSQL = "select * from Training" +
                "where EMPNO like '"+ EmpID + "'";

to

strSQL = "select * from Training" +
                "where EMPNO like '%"+ EmpID + "%'";

The % is a 'wild-card' character.
0
 
LVL 4

Accepted Solution

by:
pellep earned 5 total points
ID: 6919610
oh, you also need a space between Training and where, ie

strSQL = "select * from Training" +
               " where EMPNO like '%"+ EmpID + "%'";
0
 
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Expert Comment

by:Moondancer
ID: 6956458
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Expert Comment

by:Moondancer
ID: 6956460
ADMINISTRATION WILL BE CONTACTING YOU SHORTLY.  Moderators Computer101 or Netminder will return to finalize these if still open in seven days.  Please post closing recommendations before that time.

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