/*--------------------?ATM取款模擬Java實現-----------------
?*---------------------?write?by?wangjin-------------------
?*---------------------------2008.7------------------------
?*
?*------?Account（用戶帳戶）類：包含用戶信息的驗證、余額查詢和扣錢等方法
?*/
package?ATM;

import?java.sql.*;

public?class?Account?
{
	
	dataAccess?das=new?dataAccess（）;
//?----------------------------------------------
//?該方法用于?修改密碼
//?----------------------------------------------

???public?int?changePwd（String?gidString?pwdString?oldPwdString?newPwdString?newPwd2）?
???{
			?if（newPwd.length（）==0?||?newPwd.trim（）.equals（““））?return?-3;//?新密碼不能為空
			?else?if（oldPwd.equals（pwd））
			?{
			?		if（newPwd.equals（newPwd2））
			?		{
			?			das.exeSql（“update?guest?set?pwd=‘“+newPwd+“‘?where?gid=‘“+gid+“‘“）;
			?			return?1;//?密碼修改成功
			?		}
			?		else
			?		{
			?			return?-2;//?兩次輸入不同
			?		}?		
			?		
			?}
			?else
			?{
			?		return?-1;//?舊密碼輸入錯誤
			?}			?		?	
	?}
???

//?----------------------------------------------
//?該方法用于?轉帳操作
//?----------------------------------------------

?public?float??transfer（String?gidString?tran_accountString?tran_RMB）
?{
	?float?rsrs1backrs=1;
?	?String?accsql=“select?*?from?guest?where?gid=‘“+tran_account+“‘“;
?	?//String?gidsql=“select?*?from?guest?where?gid=‘“+gid+“‘“;
?	?rs=das.getRowcount（accsql）;
?	?rs1=this.queryBalance（gid）;
?	?if?（tran_RMB.length（）?==?0
			||?tran_RMB.trim（）.equals（““）
			||?tran_account.length（）?==?0
			||?tran_account.trim（）.equals（““））
?		?backrs=-1;?//輸入信息不能為空
	?	//return?rs;
?	?else?if（rs==0）
	?		backrs=-2;??//系統里沒有該帳戶信息
?	?else?if（rs1?		?backrs=-3;
	?return?backrs;
?}
???
//?----------------------------------------------
//?該方法用于?驗證用戶ID
//?----------------------------------------------

???public?boolean?checkAccount（String?tid）?
???{
?????String?ssql;?????
?????ssql=“select?*?from?guest?where?gid=‘“+tid+“‘“;?????
?????if（das.getRowcount（ssql）>0）//?合法ID
?????{
?????	?return?true;
?????}
?????else//?非法ID
?????{
?????	?return?false;
?????}
???}
???
//?----------------------------------------------
//?該方法用于?驗證用戶密碼
//?----------------------------------------------

???public?boolean?checkPwd（String?tidString?tpwd）?
???{
?????String?ssql;
?????ssql=“select?*?from?guest?where?pwd=‘“+tpwd+“‘?and?gid=‘“+tid+“‘“;
?????if（das.getRowcount（ssql）>0）//?合法pwd
?????{
?????	?return?true;
?????}
?????else//?非法pwd
?????{
?????	?return?false;
?????}
???}
//?----------------------------------------------
//?該方法用于查詢余額
//?----------------------------------------------

	?public?float?queryBalance（String?gid）
	?{
	?	?ResultSet?rs;
	?	?String?ssql=“select?*?from?guest?where?gid=‘“+gid+“‘“;
	?	?float?balance=0;
	?	?try
	?	?{
	?	?	?rs=das.getData（ssql）;
	?	?	?rs.next（）;
	?	?	?balance=rs.getFloat（“gmoney“）;
	?	?}
	?	?catch（Exception?e）
	?	?{
	?	?	?System.out.println（e.toString（））;
	?	?}
	?	?finally
	?	?{
	?	?	

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件???????4158??2008-07-04?10:10??ATM\Account.java

?????文件????????517??2008-07-04?10:11??ATM\Atm.java

?????文件??????16905??2008-07-04?10:13??ATM\atmScreen.java

?????文件???????2623??2008-07-04?10:13??ATM\dataAccess.java

?????文件????????579??2008-07-04?10:13??ATM\moneyMachine.java

?????文件????????440??2008-07-04?10:13??ATM\readCard.java

?????文件?????163840??2009-01-09?13:53??ATM\Data\atm.mdb

?????文件?????356454??2008-07-04?10:24??image\transfer.bmp

?????文件?????356454??2008-07-04?10:20??image\welcome.bmp

?????文件?????357654??2008-07-04?10:24??image\chgpwd.bmp

?????文件?????354054??2008-07-04?10:22??image\getmoney.bmp

?????文件?????361254??2008-07-04?10:20??image\input.bmp

?????文件?????355254??2008-07-04?10:21??image\operation.bmp

?????文件?????357654??2008-07-04?10:23??image\query.bmp

?????文件????????157??2009-01-09?13:56??readme.txt

?????目錄??????????0??2008-11-07?02:29??ATM\Data

?????目錄??????????0??2008-11-07?02:29??ATM

?????目錄??????????0??2008-11-18?08:22??image

-----------?---------??----------?-----??----

??????????????2687997????????????????????18