JDBC Tutorials - Herong's Tutorial Examples - v3.12, 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) HerongYang.com. All Rights Reserved. */ import java.sql.*; public class MySqlConnectionUrl { public static void main(String [] args) { Connection con = null; try { 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:
herong> java -cp .:mysql-connector-java.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
JDBC (Java Database Connectivity) Introduction
Installing and Running Java DB - Derby
Derby (Java DB) JDBC DataSource Objects
Java DB (Derby) - DML Statements
Java DB (Derby) - ResultSet Objects of Queries
Java DB (Derby) - PreparedStatement
►MySQL JDBC Driver (MySQL Connector/J)
MySQL Connector/J - Download and Installation
Loading JDBC Driver for MySQL Server
Creating Connections with DataSource Class
Getting Driver and Server Information
Creating Tables with AUTO_INCREMENT Columns
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 - Reference Implementation of JdbcRowSet
Oracle - JBDC CallableStatement
Oracle CLOB (Character Large Object) - TEXT
Oracle BLOB (Binary Large Object) - BLOB
Microsoft SQL Server Express Edition
Microsoft JDBC Driver for SQL Server
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