常用JDBC连接数据库方法总结如下：

一、DB2

Class.forName("Com.ibm.db2.jdbc.net.DB2Driver");

String url="jdbc:db2://dburl:port/DBname"

cn = DriverManager.getConnection( url, userName, password );

二、Microsoft SQLServer(microsoft)

Class.forName( "com.microsoft.jdbc.sqlserver.SQLServerDriver" );

cn = DriverManager.getConnection( "jdbc:microsoft:sqlserver://DBServerIP:1433;databaseName=master", userName, password );

三、Sybase(jconn2.jar)

Class.forName( "com.sybase.jdbc2.jdbc.SybDriver" );

cn = DriverManager.getConnection( "jdbc:sybase:Tds:DBServerIP:2638", userName, password);

四、MySQL(mm.mysql-3.0.2-bin.jar)

Class.forName( "org.gjt.mm.mysql.Driver" );

cn = DriverManager.getConnection( "jdbc:mysql://DBServerIP:3306/myDatabaseName", userName, password );

五、PostgreSQL(pgjdbc2.jar)

Class.forName( "org.postgresql.Driver" );

cn = DriverManager.getConnection( "jdbc:postgresql://DBServerIP/myDatabaseName", userName, password );

六、Oracle(classes12.jar)

Class.forName( "oracle.jdbc.driver.OracleDriver" );

cn = DriverManager.getConnection( "jdbc:oracle:thin:@MyDbComputerNameOrIP:1521:ORCL", userName, password );

七、ODBC

Class.forName( "sun.jdbc.odbc.JdbcOdbcDriver" );

Connection cn = DriverManager.getConnection( "jdbc:odbc:" + sDsn, userName, password );