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Old 12-05-2007, 10:02 PM   #1
Swift&Smart
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Registered: Jan 2003
Location: Hong Kong,China
Distribution: Slackware,OpenSUSE
Posts: 472

Rep: Reputation: 30
Java JDBC-Exception: Communications link failure


Hello,everyone.

Recently,I have been playing around with Java and JDBC using MySQL database,which is my favourite.However,after I put the mysql-connector...jar to my JDK installation location /usr/local/jdk1.6/jre/lib/ext/.jar and I used the sample script on the Internet and try to connect to,it returned a failure message.

Exception: Communications link failure in the command prompt

Please drop me a line if you have any ideas with this error.Thanks a million.

The sample script goes like:
Code:
import java.sql.*;
public class MySqlConnectionUrl {
  public static void main(String [] args) {
    Connection con = null;
    try {
      Class.forName("com.mysql.jdbc.Driver") ;
      System.out.println("MySQL JDBC driver loaded ok.");
       con = DriverManager.getConnection(
        "jdbc:mysql://localhost:3306/mysql?"
        + "user=user&password=mypasswd");
      System.out.println("Connected with host:port/database.");
      con.close();
     } 
    catch (Exception e) {
      System.err.println("Exception: "+e.getMessage());
    }
  }
}
 
Old 12-06-2007, 12:12 AM   #2
ehawk
Senior Member
 
Registered: Jul 2003
Posts: 1,257

Rep: Reputation: 48
Does starting to read from here help?

http://docs.sun.com/source/817-6087/dgjdbc.html

http://forum.java.sun.com/thread.jsp...=136&tstart=15

Perhaps you can post to the java forum above

Also see (perhaps another good forum to consider):

http://www.daniweb.com/forums/thread68988.html

http://viconflex.blogspot.com/2006_11_01_archive.html

http://mext.at/?p=14
 
  


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