网络编程银行项目（新手J2SE实战项目）

import java.io.*; import java.net.*; import java.util.*; //CIBC 银行ATM终端（客户端） public class CIBCATM{ private boolean flag = false; private BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in)); private String CIBCip = null; private int CIBCport = 0; public void selectOpt() throws Exception {//选择卡所属银行，然后转入相应的连接支行服务器的方法 System.out.println("你好，欢迎使用CIBC银行ATM"); while(true){ System.out.println("请插入您的磁卡"); String str = bufferedReader.readLine(); if(str.startsWith("CIBC")){ connectCIBC(str); break; } if(str.startsWith("TD")){ connectCCHToTD(str); break; }else{ System.out.println("输入有误，请重新输入"); } } } //连接CIBC服务器，根据选择进行对应的操作 public void connectCIBC(String str)throws Exception { Socket socket = new Socket(CIBCip,CIBCport); BufferedReader br = null; PrintWriter pw = null; try{//连接服务器判断密码是否正确 while(true){ String printCardId = str; System.out.println("请输入密码："); String printPassword = bufferedReader.readLine(); pw = new PrintWriter(socket.getOutputStream(),true); br = new BufferedReader(new InputStreamReader(socket.getInputStream())); pw.println("m"+printCardId+"!"+printPassword); String line = null; while((line = br.readLine())!=null){ if(("true").equals(line)){ System.out.println("密码正确"); flag = true; break; }else{ flag = false; System.out.println("密码错误"); break; } } while(flag){//flag初值为false，如果密码正确则置为true System.out.println("*****************"); System.out.println("1.查询余额"); System.out.println("2.取款"); System.out.println("3.存款"); System.out.println("4.退出"); System.out.println("请选择你的操作："); int otp = Integer.parseInt(bufferedReader.readLine()); switch(otp){ case 1 : //查询余额 pw.println("x"+printCardId); String line1 = null; while((line1 = br.readLine())!=null){ if(("true").equals(line1)){ System.out.println("此卡没有存款了！！"); break; }else{ System.out.println("您的余额："+line1+"元"); break; } } break; case 2 : //取款 System.out.println("请输入你要取款的金额："); String money = bufferedReader.readLine(); pw.println("q"+printCardId+"!"+money); String line2 = null; while((line2 = br.readLine())!=null){ if(("true").equals(line2)){ System.out.println("请您拿好你的钞票:"+money+"元"); break; }else{ System.out.println("您的余额不足"); break; } } break; case 3 : //存款 System.out.println("请你输入你要存的金额"); String money1 = bufferedReader.readLine(); pw.println("s"+printCardId+"!"+money1); String line3 = null; while((line3 = br.readLine())!=null){ if(("true").equals(line3)){ System.out.println("您已经存入钞票:"+money1+"元"); break; }else{ System.out.println("系统故障，不能存款！请您拿好你的钞票"); break; } } break; case 4 : //退出 System.out.println("请您清点您的钞票，拿好贵卡！"); pw.println("close"); selectOpt(); break; default : System.out.println("输入有误，请重新输入"); } } } }catch(IOException ie){ ie.printStackTrace(); }finally{ br.close(); pw.close(); socket.close(); } } //连接TD服务器，根据选择进行操作(先把请求发给CIBC服务器，让CIBC传给总行) public void connectCCHToTD(String str)throws Exception { Socket socket = new Socket(CIBCip,CIBCport); BufferedReader br = null; PrintWriter pw = null; try{//连接服务器判断密码是否正确 while(true){ String printCardId = str; System.out.println("请输入密码："); String printPassword = bufferedReader.readLine(); pw = new PrintWriter(socket.getOutputStream(),true); br = new BufferedReader(new InputStreamReader(socket.getInputStream())); pw.println("km"+"TD"+"$"+printCardId+"!"+printPassword+"#"+"CIBC"); //m是验证密码的字符串标示，TD是哪个银行的卡，printCardId卡号，printPassword卡的密码，CIBC从哪个银行的ATM上传来的就写哪个银行 String line = null; while((line = br.readLine())!=null){ if(("true").equals(line)){ System.out.println("密码正确"); flag = true; break; }else{ flag = false; System.out.println("密码错误"); break; } } while(flag){//flag初值为false，如果密码正确则置为true System.out.println("*****************"); System.out.println("1.查询余额"); System.out.println("2.取款"); System.out.println("3.退出"); System.out.println("请选择你的操作："); int otp = Integer.parseInt(bufferedReader.readLine()); switch(otp){ case 1 : //查询余额 pw.println("kx"+"TD"+"$"+printCardId+"#"+"CIBC"); String line1 = null; while((line1 = br.readLine())!=null){ if(("true").equals(line1)){ System.out.println("此卡没有存款了！！"); break; }else{ System.out.println("您的余额："+line1+"元"); break; } } break; case 2 : //取款 System.out.println("请输入你要取款的金额："); String money = bufferedReader.readLine(); //pw.println("km"+"TD"+"$"+printCardId+"!"+printPassword+"#"+"CIBC"); pw.println("kq"+"TD"+"$"+printCardId+"!"+money+"#"+"CIBC"); String line2 = null; while((line2 = br.readLine())!=null){ if(("true").equals(line2)){ System.out.println("请您拿好你的钞票:"+money+"元"); break; }else{ System.out.println("您的余额不足"); break; } } break; case 3 : //退出 System.out.println("请您清点您的钞票，拿好贵卡！"); pw.println("close"); selectOpt(); break; default : System.out.println("输入有误，请重新输入"); } } } }catch(IOException ie){ ie.printStackTrace(); }finally{ br.close(); pw.close(); socket.close(); } } //读取配置文件，将ip和port设置好 public void starts()throws Exception { Properties prop = new Properties(); try{ prop.load(new FileInputStream("config.properties")); }catch(IOException ie){ ie.printStackTrace(); } this.CIBCip = prop.getProperty("cibcbankIP"); this.CIBCport = Integer.parseInt(prop.getProperty("cibcbankPort")); } public static void main(String[] args)throws Exception { CIBCATM ca = new CIBCATM(); ca.starts(); ca.selectOpt(); } }