jdbc连接sql server

import java.sql.*;
public class JdbcUtil
{
    public static void close(Statement st, Connection con)
    {
        try
        {
            st.close();
        }catch(Exception e)
        {
        }
       
        try
        {
            con.close();
        }catch(Exception e)
        {
        }
    }
   
    public static void close(ResultSet rs, Statement st, Connection con)
    {
        try
        {
            rs.close();
        }catch(Exception e)
        {
        }
        close(st, con);
    }
   
    public static Connection getConnection() throws Exception
    {
        Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
        return DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=db", "sa", "54321");
    }
}