数据库端口号

SQL Server默认端口号为：1433

1. URL:"jdbc:microsoft:SQL Server://localhost:1433;DatabaseName=dbname"  
2. DRIVERNAME:"com.microsoft.jdbc.SQL Server.SQL ServerDriver";  

MySQL 默认端口号为：3306

1. URL:jdbc:MySQL://localhost:3306/test? user=root&password=&useUnicode=true&characterEncoding=gbk 
2. DRIVERNAME:"com.MySQL.jdbc.Driver";  

Oracle 默认端口号为：1521

1. URL:"jdbc:Oracle:thin:@localhost:1521:orcl ";  
2. DRIVERNAME:"Oracle.jdbc.driver.OracleDriver