public class Test {
    private static Logger logger = Logger.getLogger(Test.class.getName());
    public static void main(String[] args){
        
        Connection conn = null;
            try {
                Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
            } catch (ClassNotFoundException e) {
                logger.error(e);
            }
            try{
                conn = DriverManager.getConnection("jdbc:sqlserver://localhost:1433;DatabaseName = Stu", "sa", "123");
                System.out.println("建立连接成功");
            }catch(SQLException e){
                logger.error(e);
            }finally{
                try{
                    if(null!=conn){
                        conn.close();
                        System.out.println("关闭连接成功");
                    }
                }catch(SQLException e){
                    logger.error(e);
                }
            }
    }
}