JDBC连接几种常用数据库的方法

import java.sql.*;

public class SqlTest {
	/**
	 * @param args
	 * @throws ClassNotFoundException
	 * @throws IllegalAccessException
	 * @throws InstantiationException
	 * @throws SQLException
	 */
	public static void main(String[] args) throws InstantiationException, IllegalAccessException, ClassNotFoundException, SQLException {
		// TODO Auto-generated method stub

		 //JDBC-mysql 连接驱动字符串
		    String driverClass="com.mysql.jdbc.Driver";
		    String url = "jdbc:mysql://localhost:3306";				
                  
		  //此为NO-DSN方式，直接连接Access数据库 
                  //Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
		  //String dburl ="jdbc:odbc:driver={Microsoft Access Driver       (*.mdb)};DBQ=test.mdb";
		//Connection conn=DriverManager.getConnection(dburl);

		  //JDBC-ODBC 连接驱动字符串
		 /* String driverClass="sun.jdbc.odbc.JdbcOdbcDriver";
		    String url="jdbc:odbc:odbc_db";*/		
		
		 //JDBC-sqlserver 连接驱动字符串
		   /* String driverClass="com.microsoft.sqlserver.jdbc.SQLServerDriver";
		    String url="jdbc:sqlserver://localhost:1433;user=sa;password=sa";*/
		
			Connection con=null;
			Statement st=null;  
			

			
			try {	
			Class.forName(driverClass);			
			con = DriverManager.getConnection(url, "root", "123");
			//con=DriverManager.getConnection(url);
			st = con.createStatement();
			st.executeUpdate("use test");
			//st.executeUpdate("drop table bookinfo");
			st.executeUpdate("create table bookinfo(id INT not null primary key,title VARCHAR(50) not null,author VARCHAR(50) not null)");
			st.addBatch("insert into bookinfo values(1,'入门到精通','张三')");
			st.executeBatch();	
			
			String sqlStr = "select * from bookinfo";	
			ResultSet rs = st.executeQuery(sqlStr);
			while (rs.next()) {
				System.out.print(rs.getString(1) + " ");
				System.out.print(rs.getString(2) + " ");
				System.out.print(rs.getString(3) + " ");
			}
			System.out.println("添加成功");
			rs.close();
			st.close();
			con.close();
			
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			if(st!=null)
			{
			   try{
				   st.close();
			   }catch(SQLException e){
				   e.printStackTrace();
			   }
			   st=null;
			}
			if(con!=null)
			{
				try{
					con.close();
				}catch(SQLException e)
				{
					e.printStackTrace();
				}
				con.close();
			}
		}
	}

}

连接sqlserver 2000或则2005采用，sqljdbc.jar驱动包，连接mysql的需要mysql jdbc驱动包