src/caiwu/DispMaster.java

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/**
*  Title  �������ϵͳ
*  @author: trowa
*  Company: http://www.upol.cn
*  Copyright: Copyright (c) 2004
*  @version 1.0
*  ����Ա���е�һЩ��ѯ����
*/
package caiwu;

import java.sql.*;
import java.util.*;

public class DispMaster extends Master{

public boolean ismaster;

public ResultSet rs;

public DispMaster(){};

/*login*/
public boolean chkLogin() throws Exception {
	DBConnect dbc = null;
	try{
		dbc  = new DBConnect();
		
		dbc.prepareStatement("SELECT * FROM master WHERE name = ? and pass = ?");
		dbc.setBytes(1,userName.getBytes("UTF-8"));
		dbc.setBytes(2,userPassword.getBytes("UTF-8"));
		rs = dbc.executeQuery();
		if(!rs.next()){
			ismaster = false;
			System.out.println(rs.getString("---name"));
			System.out.println(rs.getString("---pass"));
		}else{
			ismaster = true;
			System.out.println(rs.getString("name"));
			System.out.println(rs.getString("pass"));
		}
	}catch(Exception e){
		//System.err.println(e);
		e.printStackTrace();
	}finally{
		try{
			dbc.close();
		}catch(Exception e){
			//e.printStackTrace();
		}
	}
	return ismaster;
}

/*
* ��ѯ���еĹ���Ա,����Ƿ��ظ�
*/
public boolean reLogin() throws Exception {
	DBConnect dbc = null;
	try{
		dbc  = new DBConnect();