JDBC的数据库连接

//////////////////MYSQL
 Class.forName("com.mysql.jdbc.Driver");

("jdbc:mysql://localhost:3306/test","root","root");

/////////////////Oracle

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

("jdbc:oracle:thin:@127.0.0.1:1521:orcl","SCOTT","Scott");

/////////////////SQL Server

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

("jdbc:sqlserver://127.0.0.1:1433;DatabaseName=sqlserver2005_test","haha","haha");