sqlserver、mysql、oracle、神通数据库(oscar)、达梦(dm)、金仓(kingbase)各自的默认端口号
sqlserver默认端口号为：1433
URL=jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=dbname
DriverClasses = com.microsoft.jdbc.sqlserver.SQLServerDriver
mysql 默认端口号为：3306
URL=jdbc:mysql://localhost:3306/test? user=root&password=&useUnicode=true&characterEncoding=gbk
DriverClasses = com.mysql.jdbc.Driver
oracle 默认端口号为：1521
URL=jdbc:oracle:thin:@localhost :1521:orcl
DriverClasses = oracle.jdbc.driver.OracleDriver
神通数据库(oscar)默认端口号为：2003
url = jdbc:oscar://localhost:2003/osrdb
DriverClasses = com.oscar.Driver
达梦(dm) 默认端口号为：5236
url = jdbc:dm://localhost:5236
DriverClasses = dm.jdbc.driver.DmDriver
金仓（kingbase）默认端口号：54321
url = jdbc:kingbase8//localhost:54321/TEST
DriverClasses = com.kingbase8.Driver