jsp项目中连接sqlsever的语句换成连接mysql的该怎么改啊?

package db;
import java.sql.*;
public class db {
private String dbDriver="com.microsoft.sqlserver.jdbc.SQLServerDriver";

private String sConnStr = "jdbc:sqlserver://localhost:1433;databasename=jspjiazhengxns5210";
public Connection connect = null;
public ResultSet rs=null;
public db() {
try {

Class.forName(dbDriver).newInstance();

connect = DriverManager.getConnection(sConnStr,"sa","123456");

}
catch (Exception ex) {
System.out.println("12121");
}
}

public ResultSet executeQuery(String sql) {
try{
connect=DriverManager.getConnection(sConnStr,"sa","123456");
Statement stmt=connect.createStatement();
rs=stmt.executeQuery(sql);
}catch(SQLException ex){
System.err.println(ex.getMessage());
}
return rs;
}
public void executeUpdate(String sql)
{

Statement stmt=null;
rs=null;
try
{ connect=DriverManager.getConnection(sConnStr,"sa","123456");
stmt=connect.createStatement();
stmt.executeUpdate(sql);
stmt.close();
connect.close();

}
catch(SQLException ex)
{
System.err.println(ex.getMessage());

}

}
}