JSP Mysql Connection Problem

Question

Hi Friend,
I am facing some problem in connecting mysql with jsp .
When I try and connect to mysql with the following connection string
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/testdhiraj?user=root&password=dh");
Statement statement     = con.createStatement();
I get an error :
java.sql.SQLException: Communication link failure: Bad handshake
I don't know what is wrong,
as I had tested mysql using telnet and it connects and executes sql nicely.
Waiting for ur reply,
Dhiraj Agrawal
mail to : [email protected]

Answer 1

Hi,
You need to make sure that , you have given correct database name, user id and password in the connection url. and also check the jdbc driver is loaded properly. If your mysql is running in the standard port, you need not give the port as 3306.
Here is the example :
import java.sql.*;
     Notice, do not import org.gjt.mm.mysql.*
or you will have problems!
public class XampleClass
public static void main(String[] Args)
try {      
Class.forName("org.gjt.mm.mysql.Driver").newInstance();
catch (Exception e) {
System.err.println("exception while loading
driver.");
e.printStackTrace();
try {
Connection C = DriverManager.getConnection(
"jdbc:mysql://localhost/test?user=myuser&password=mypwddb");
// Do something with the Connection
catch (SQLException e) {
System.out.println("Exception: " + e);
This is the format for conenction url :
jdbc:mysql://[hostname][:port]/dbname[?param1=value1][&param2=value2]...
Hope this helps you.
Thanks,
Senthil_Slash