JDBC Tutorials - Herong's Tutorial Examples - Version 2.21, by Dr. Herong Yang

JDBC Driver Connection URL

This section describes the connection URL format and how to create connection objects with the DriverManager class.

If you want to use the DriverManager class to create connection objects, you need to know how to make a connection URL that provides access information to the MySQL server. The MySQL connection URL has the following format:

jdbc:mysql://[host][:port]/[database][?property1][=value1]...

  host - The host name where MySQL server is running. 
         Default is 127.0.0.1 - the IP address of localhost.

  port - The port number where MySQL is listening for connection.
         Default is 3306.

  Database - The name of an existing database on MySQL server.
         If not specified, the connection starts no current database.

  Property - The name of a supported connection properties. 
         "user" and "password" are 2 most important properties.
  
  Value - The value for the specified connection property.

Here are some example connection URLs:

jdbc:mysql://localhost:3306/HerongDB?user=Herong&password=TopSecret
jdbc:mysql://:3306/HerongDB?user=Herong&password=TopSecret
jdbc:mysql://localhost/HerongDB?user=Herong&password=TopSecret
jdbc:mysql://localhost:3306/?user=Herong&password=TopSecret
jdbc:mysql://localhost/?user=Herong&password=TopSecret
jdbc:mysql://:3306/?user=Herong&password=TopSecret
jdbc:mysql:///HerongDB?user=Herong&password=TopSecret
jdbc:mysql:///?user=Herong&password=TopSecret

I wrote the following program to validate some of the connection URLs listed above:

/**
 * MySqlConnectionUrl.java
 * Copyright (c) 2007 by Dr. Herong Yang. All rights reserved.
 */
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/HerongDB?"
        + "user=Herong&password=TopSecret");
      System.out.println("Connected with host:port/database.");
      con.close();

      con = DriverManager.getConnection(
        "jdbc:mysql://:3306/HerongDB?"
        + "user=Herong&password=TopSecret");
      System.out.println("Connected with default host.");
      con.close();

      con = DriverManager.getConnection(
        "jdbc:mysql://localhost/HerongDB?"
        + "user=Herong&password=TopSecret");
      System.out.println("Connected with default port.");
      con.close();

      con = DriverManager.getConnection(
        "jdbc:mysql://localhost:3306/?"
        + "user=Herong&password=TopSecret");
      System.out.println("Connected with no database.");
      con.close();

      con = DriverManager.getConnection(
        "jdbc:mysql:///?"
        + "user=Herong&password=TopSecret");
      System.out.println("Connected with properties only.");
      con.close();

    } catch (Exception e) {
      System.err.println("Exception: "+e.getMessage());
    }
  }
}

Here is the output:

C:\>java -cp .;\local\lib\mysql-connector-java-5.0.7-bin.jar 
  MySqlConnectionUrl

MySQL JDBC driver loaded ok.
Connected with host:port/database.
Connected with default host.
Connected with default port.
Connected with no database.
Connected with properties only.

Table of Contents

 About This Book

 JDBC (Java Database Connectivity) Introduction

 Downloading and Installing JDK - Java SE

 Installing and Running Java DB - Derby

 Derby (Java DB) JDBC Driver

 Derby (Java DB) JDBC DataSource Objects

 Java DB (Derby) - DML Statements

 Java DB (Derby) - ResultSet Objects of Queries

 Java DB (Derby) - PreparedStatement

 MySQL Installation on Windows

MySQL JDBC Driver (MySQL Connector/J)

 MySQL Connector/J - Download and Installation

 Loading JDBC Driver Class - mysql-connector-java-5.0.7-bin.jar

JDBC Driver Connection URL

 Creating Connections with DataSource Class

 Getting Driver and Server Information

 Creating Tables with AUTO_INCREMENT Columns

 "INSERT INTO" Statements

 MySQL - PreparedStatement

 MySQL - Reference Implementation of JdbcRowSet

 MySQL - JBDC CallableStatement

 MySQL CLOB (Character Large Object) - TEXT

 MySQL BLOB (Binary Large Object) - BLOB

 Oracle Express Edition Installation on Windows

 Oracle JDBC Drivers

 Oracle - Reference Implementation of JdbcRowSet

 Oracle - PreparedStatement

 Oracle - JBDC CallableStatement

 Oracle CLOB (Character Large Object) - TEXT

 Oracle BLOB (Binary Large Object) - BLOB

 Microsoft SQL Server 2005 Express Edition

 Microsoft JDBC Driver for SQL Server - sqljdbc.jar

 Microsoft JDBC Driver - Query Statements and Result Sets

 Microsoft JDBC Driver - DatabaseMetaData Object

 Microsoft JDBC Driver - DDL Statements

 Microsoft JDBC Driver - DML Statements

 SQL Server - PreparedStatement

 SQL Server CLOB (Character Large Object) - TEXT

 SQL Server BLOB (Binary Large Object) - BLOB

 JDBC-ODBC Bridge Driver - sun.jdbc.odbc.JdbcOdbcDriver

 JDBC-ODBC Bridge Driver - Flat Text Files

 JDBC-ODBC Bridge Driver - MS Access

 JDBC-ODBC Bridge Driver - MS SQL Server

 Summary of JDBC Drivers and Database Servers

 Additional Tutorial Notes to Be Added

 References

 PDF Printing Version

JDBC Driver Connection URL - Updated in 2014, by Dr. Herong Yang