Myeclipse连接mysql数据库心得体会

package .bipt.db;

import java.sql.Statement;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
public class DBCon {
 public static Connection conn=null;
 public static Statement stmt = null;
 public static ResultSet rs = null;

 public void getCon() throws ClassNotFoundException, SQLException {
 Class.forName(".mysql.jdbc.Driver");
 conn = DriverManager.getConnection("jdbc:mysql://localhost/btestdemo?"
  + "user=root&password=bipt");
 }

 public void closeCon(Connection conn) throws SQLException {
 if (conn != null)
  conn.close();

 }

 public static void main(String[] args) {
 DBCon dbc = new DBCon();
 try {
  dbc.getCon();
  stmt = conn.createStatement();
  rs = stmt.executeQuery("select  from user");
  while(rs.next()) {       
  System.out.println(rs.getInt("USERID"));      
  System.out.println(rs.getString("USERNAME"));   
  System.out.println(rs.getString("USERPASSWORD"));
 // System.out.println(rs.getString("USERMAIL")); 
 //System.out.println(rs.getDate("USERTIME"));
 // System.out.println(rs.getString("USERINTEGRAL"));   
 //System.out.println(rs.getString("USERSEX")); 
  System.out.println();     
  }
  System.out.println("conn:" + DBCon.conn);
  System.out.println("mysql测试成功");
 } catch (ClassNotFoundException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
 } catch (SQLException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
 }
 }

}

CREATE TABLE `user` (
`USERID` int(11) NOT NULL auto_increment,
`USERNAME` varchar(30) NOT NULL default '',
`USERPASSWORD` varchar(30) default '',

PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=gb2312;
go