public static void main(String[] args) {

        // TODO Auto-generated method stub

            String    DBDRIVER="com.microsoft.sqlserver.jdbc.SQLServerDriver";

            String    DBURL="jdbc:sqlserver://localhost:1433;databasename=test";

            String    DBUID="sa";

            String    DBPWD="123456";

             Connection con = null;

             try {

                Class.forName(DBDRIVER);

                con=DriverManager.getConnection(DBURL,DBUID,DBPWD);

                System.out.println(con);

            } catch (ClassNotFoundException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }catch (SQLException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

    }

public static void main(String[] args) {

        // TODO Auto-generated method stub

            String    DBDRIVER="com.mysql.jdbc.Driver";

            String    DBURL="jdbc:mysql://localhost:3306/[数据库名称]";

            String    DBUID="sa";

            String    DBPWD="123456";

             Connection con = null;

             try {

                Class.forName(DBDRIVER);

                con=DriverManager.getConnection(DBURL,DBUID,DBPWD);

                System.out.println(con);

            } catch (ClassNotFoundException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }catch (SQLException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

    }