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Database connection
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Join Date: May 2008
Posts: 1
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Hi
i m new in mysql plz any one help me how can i solve a problem.
i m using this code for connection file
and also made this page
i m using tomcat 4.0 and
if i m insert a id and pwd admin,admin then give the error
Database Connection does not exist
plz help me how can i solve this problem
i m new in mysql plz any one help me how can i solve a problem.
i m using this code for connection file
Java Syntax (Toggle Plain Text)
package connect; import java.sql.*; public class Connect { private static Connection con=null; public static Connection getConnection() { try { Class.forName("org.gjt.mm.mysql.Driver").newInstance(); con =DriverManager.getConnection("jdbc:mysql://localhost:3306/rsdatabase","root","root"); System.out.println("Connection Established"); return con; } catch(Exception e) { System.out.println("Error Loading Driver" +e); } return con; } }
and also made this page
Java Syntax (Toggle Plain Text)
package services; import java.sql.*; import java.io.*; import java.util.*; import connect.Connect; public class login1 { Vector v=null,v1=null,v2=null,v3=null,v4=null,v5=null,v6=null,v7=null,v8=null; Connection con=null; Statement stmt=null,stmt1=null,stmt2=null; ResultSet rs=null,rs1=null,rs2=null; PreparedStatement ps=null,ps1=null,ps2=null; public login1() { try { con=Connect.getConnection(); } catch(Exception e) { System.out.println("Exception:"+e); } } public boolean logincheck(String username,String password) { try{ String aa="Select * from user_pass where UserName=(?) and password=(?)"; ps=con.prepareStatement(aa); ps.setString(1,username); ps.setString(2,password); rs=ps.executeQuery(); if(rs.next()){ return true; } } catch(Exception s) { System.out.println("Error" +s); } return false; } public String getType(String username,String password) { try{ String aa="Select * from user_pass where UserName=(?) and password=(?)"; ps=con.prepareStatement(aa); ps.setString(1,username); ps.setString(2,password); rs=ps.executeQuery(); if(rs.next()){ return rs.getString("AccessType"); } } catch(Exception s) { System.out.println("Error" +s); } return "-"; } public static void main(String args[]) { login1 ll=new login1(); boolean b=ll.logincheck("admin","admin"); System.out.println(b); } }
if i m insert a id and pwd admin,admin then give the error
Database Connection does not exist
plz help me how can i solve this problem
Last edited by peter_budo; Jun 3rd, 2008 at 11:02 am. Reason: Keep It Organized - please use [code] tags
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